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[Powered by Google Translate] [Sehemu ya 8] [Less Starehe]

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[Nate Hardison] [Chuo Kikuu cha Harvard]

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[Hii ni CS50.] [CS50.TV]

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>> Karibu pili yetu kwa sehemu ya mwisho.

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Katika wiki hii sisi ni kwenda kwa majadiliano juu ya PHP, na kisha wiki ijayo

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tutaweza kufanya marekebisho kidogo kwa Quiz 1.

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Sisi ni kwenda kuanza ukurasa 3 ya tatizo seti pakiti,

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na tutaweza kazi kupitia sehemu ya maswali haki haraka.

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Katika ukurasa 3, tunaanza kuzungumza kuhusu hii tofauti kati ya C na PHP

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kwa maana kwamba PHP ni lugha dynamically typed,

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ambapo C ni statically typed,

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na ina mtu yeyote kweli haraka kufanyika coding yoyote katika kitu kama PHP

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au chatu au Ruby kabla, JavaScript?

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Mpya kabisa? Sawa.

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>> Yote ya lugha hizi kwamba mimi tu zilizotajwa

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ni tofauti sana na lugha kama C na C + + na Java

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kwa maana kwamba wakati wewe kutangaza variable huna kutangaza

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aina gani ya kutofautiana ni, hivyo katika C sisi walikuwa kukwama kuwa na daima kusema

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hii itakuwa ni variable int, au huu ni kwenda kuwa Char * variable,

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ambapo kwa PHP, na chatu, na Ruby,

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na mengi ya lugha hizi za kisasa zaidi huna kufanya hivyo wakati wote.

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Wewe tu kutangaza variable yako, na katika kesi ya PHP

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wewe kutangaza kwamba ni kutofautiana na prefixing na alama ya $,

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na basi aina ya kutofautiana ni kuamua na chochote thamani ni kushika,

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ambayo ni aina ya baridi.

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Kucheza karibu na kidogo kidogo hii, tuna sampuli PHP code hapa hapa

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katika kati ya vitambulisho mwanzo na mwisho.

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Sisi ni kutumia aina hii ya kama HTML kwa maana kwamba

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sisi tumepewa mabano haya angle hapa kwa kufungua na kufunga.

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Utaona hii kwa HTML.

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Utaona aina moja ya syntax kwa XML pia.

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>> Hii inaonyesha mwanzo wa block PHP.

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Hii php? Ni maalum kwa PHP.

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Tunafunga kila kitu pamoja na> kama? Vizuri.

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Hebu kufungua faili katika appliance wetu kwa kutumia chochote kile Ningependa.

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Katika pakiti hii inasema kuwaita dynamic.php.

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Kwa kweli, unaweza kuiita chochote ungependa, lakini jina faili kuja

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na kuwa muhimu baadaye, hivyo kumbuka tu chochote simu yake.

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Mimi nina kwenda kubadili juu ya appliance,

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na mimi naenda kufanya directory kwa

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kifungu cha 9 naamini sisi ni saa sasa.

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Na tutaweza kwenda katika sehemu ya 9,

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na mimi naenda kutumia gedit.

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Hebu angalia, gedit, na mimi nina kwenda kuwaita dynamic.php mgodi.

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Boom.

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Ndani ya dynamic.php, kwani hii ni faili PHP

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na mimi nataka hii kukimbia kupitia mkalimani PHP

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Mimi haja ya kuanza kila kitu mbali na vitambulisho hayo wazi,

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hivyo mimi nina kwenda kuanza wale haki mbali,

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kutoa mwenyewe nafasi kidogo katika kati ya vitambulisho,

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na kisha kumweka ya zoezi hili lilikuwa kucheza karibu na

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kazi hii inaitwa gettype, hivyo gettype, hii kazi hapa hapa.

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>> Ona kwamba kuna hakuna underscore au nafasi au hyphen au kitu kama hicho

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kutenganisha maneno 2, kupata na aina, moja tu neno kabisa.

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Lakini nini hii kufanya ni kama mimi kupita katika variable kwa gettype,

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kusema $ var au $ x,

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hii uniambie aina ya format katika debugging

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nini jina la aina hiyo ni.

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Sisi ni kwenda majaribio hapa.

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Hasa, kama wewe kuangalia nyuma katika spec pset

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sisi tumepewa chache mistari tofauti ya maadili ya hapa.

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Katika mstari wa kwanza wa code sisi initialize hii variable, $ var,

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kuwa sawa na 7, na kisha tuna line hii printf

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kwamba anasema hey, var printf ni tupu.

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Printf ni moja ya njia nyingi tunaweza magazeti mambo katika PHP.

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Mara nyingi utaona kazi echo kutumika badala ya printf,

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lakini printf tuko wote familiar na baada ya coding katika C kwa muda.

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Nini unaweza kufanya ni kweli hebu angalia kama miujiza nakala na kuweka.

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Mimi naenda kukupa hii kujaribu.

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Tutaweza kwenda nyuma zaidi kwa appliance.

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Okay, na kuna sisi kwenda.

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Na nafasi ni funky kidogo, lakini hapa sisi kwenda.

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Sisi tumepewa hii code katika hapa.

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>> [Mwanafunzi] Je, ni si nzuri kwa mtindo tab yake?

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Samahani?

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[Mwanafunzi] Je, ni kawaida kwa tab yake?

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Haki, hivyo Sam anauliza kama ni mkataba kwa tab au siyo.

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Kawaida ndiyo.

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Katika kesi hii nimechagua si kwa.

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Uaminifu, utaona mambo mbalimbali miongoni mwa programmers tofauti.

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PHP ni kawaida kutumika mara nyingi pamoja na HTML

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na lugha nyingine, na hivyo wakati mwingine uchapishaji itakuwa kuangalia funky kidogo

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kama wewe Indent ndani ya PHP kuanza na vitambulisho mwisho.

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Ni kweli inategemea.

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Katika kesi hii nakala na kuweka hawakuwa kuweka tabs katika kwa ajili yangu,

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lakini ni dhahiri hana, kama wewe alisema, kufanya ni wazi.

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Wote haki, kama wewe ila hii code katika dynamic.php

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basi nini unaweza kufanya ni kuja chini terminal dirisha yako ambapo mimi ni haki ya chini hapa

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katika gedit, na kufanya sawa wa kukusanya

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kutumia kufanya na kisha kukimbia code yako katika C

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wote una kufanya na faili PHP ni kuanzisha mkalimani PHP,

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ambayo ni programu kidogo kuitwa PHP,

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na hoja wewe kutoa na mkalimani ni faili unataka kutafsiri.

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Katika kesi hiyo, dynamic.php.

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Whoops, wapi mimi kuweka yake?

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Oh, mimi kuiweka katika kifungu cha 9, na mimi hapa. Hiyo ni kwa nini.

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>> Sasa kama mimi kukimbia kwamba tena

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tunaona kwamba katika wito wangu kwanza gettype kazi

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var ni integer.

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Katika var ijayo moja ni kamba, na kisha katika var tatu moja ni ya bulin.

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Nini kuvutia kuhusu hili ni kama sisi kitabu nyuma juu tunaona kwamba

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hizi ni aina sawa na wale ambao tulikuwa katika C.

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Tulikuwa ints katika C.

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Sisi aina ya masharti alikuwa katika C,

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hivyo masharti walikuwa si aina kabisa legit kwa maana kwamba

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kamba yetu CS50 ilikuwa kweli nini?

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Samahani? Missy?

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[Missy] Char *.

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Yeah, ilikuwa hii * Char sisi kutumika.

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Katika mwanzo sana ya muhula tungetumia aina kamba,

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lakini ilikuwa kweli * Char chini ya Hood.

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Sisi tu aina Alilitafsiri, ambapo katika PHP hawa masharti ni aina halisi.

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Hakuna zaidi ya mambo haya Char * aina.

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>> Utaona kwamba tunaweza kufanya mambo mengi zaidi kwa masharti

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kwa urahisi zaidi kuliko katika PHP tunaweza katika C,

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na kisha hatimaye, tuna aina hii ya bulin, na tofauti kubwa hapa ni kwamba

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kama sisi kitabu nyuma chini tunaona kwamba jina la aina hizi

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ni sasa integer, kamba, na badala ya bulin int na bool,

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na kama wewe kuchukua lugha ya programu mbalimbali,

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kuchukua kwamba wakati fulani katika maisha yako wewe kuja katika kuwasiliana na

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ndio tofauti utasikia taarifa quirks mdogo kama huyu

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ambapo C wito ints integers.

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Baadhi wanauita integers.

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Kuna maneno mengine kwamba utasikia kukimbia katika.

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Big int tuliona leo katika SQL.

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Kuna pia idadi na kisha bool, bulin,

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kila aina ya tofauti huko.

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>> Hii si sana ya kuvutia lakini sasa mimi naenda kukupa wewe muda kidogo-

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kama sisi zoom nyuma nje-kufanya kazi kwa kupitia zoezi hili chini ya ukurasa wa 3

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ambapo inauliza aina gani yanahusiana na maadili haya hapa chini.

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Tuna 3.50.

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Tuna jambo hili hapa hapa, ambayo ni ya kuvutia.

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Hatujaona kwamba kabla, ingawa kama tumekuwa kufuatia pamoja katika hotuba

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pengine tayari kujua nini ambacho ni.

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Kisha sisi kuwa hii, ambayo hii ni aina ya funky.

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Wewe kutambua hili.

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Nini hili katika C?

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Sam? Nini huyu nitakupa katika C?

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Itakuwa kufungua faili inayoitwa dynamic.php na kufanya ni someka.

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Yeah, na nini itakuwa ya aina ya kutofautiana kwamba tunataka hawawajui hii kwa nyota? >> File.

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Hasa, tunataka hawawajui hii kwa nyota faili.

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Hii ni halali PHP pia.

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Kuendesha. Angalia kinachotokea wakati kupita katika gettype.

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Na kisha pia kuangalia nini null ni, nini hiyo inaweza kuwa katika PHP.

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Mimi nitakupa dakika kadhaa.

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Unaweza literally nakala na kuweka maadili haya katika,

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na kisha tutaweza kufanya kidogo random wito juu ya wewe

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na kuona kile got.

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>> [Mwanafunzi] Nina swali << Yeah..

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Katika moja ya hotuba Daudi alisema kuna kitu unaweza kuweka saa ya juu ya faili yako

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hivyo kwamba huna aina katika PHP kila wakati.

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Nini ilikuwa hivyo?

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Yeye alikuwa pengine kuzungumza juu ya bang pound, bang hash.

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Ni maelekezo kwamba kama wewe alama faili yako kama executable

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kisha kile yake ni wakati nitafanya faili

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itakuambia mpango shell

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kumtumia mkalimani PHP kutafsiri yaliyomo ya faili.

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swali kuwa nini ilikuwa hii line maalum

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kwamba tunaweza pamoja kwa juu ya files wetu PHP si lazima ni pamoja na

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hii PHP mstari au amri hii PHP wakati wowote tunataka nitafanya faili?

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Na unaweza kweli kufanya pamoja na rundo la files tofauti.

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Naamini ni inategemea ambapo binary PHP ni kuhifadhiwa,

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lakini mara nyingi Usr / bin / php ni nafasi nzuri kuanza.

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Unaweza takwimu hii nje hasa kwa kwenda nyuma chini ya appliance yako

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na kuandika nje ambayo php.

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amri ambayo takwimu nje wakati wewe ni utekelezaji binary

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au amri ambapo faili sambamba ni.

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Hii inaniambia kwamba PHP ni kweli aliasing faili hii binary

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ambayo imehifadhiwa katika Usr / bin, ambayo ni ambapo mengi ya binaries mfumo ni imewekwa.

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Kwa mfano, kama mimi kitabu juu kwa juu, na kwamba sasa nimekuwa kuweka hii #! Mpya katika hapa

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Naweza kitabu chini, na mimi siwezi kujaribu kukimbia

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dynamic.php, lakini mimi kupata kosa hili kuhusu kunyimwa ruhusa,

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na nini maana ya ni kwamba faili hii si sasa kutoa ruhusa kutekelezwa.

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Ni si alama kama faili kwamba mtu anaweza kukimbia.

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>> Wakati mbio kufanya au Clang na wewe got executable kutoka humo

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compiler alikuwa smart kutosha kujua kwamba hey, mimi nina kujenga executable.

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Pengine unataka nitafanya hivyo, hivyo itakuwa moja kwa moja configure

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ruhusa kwa ajili yenu.

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Hii si kesi, ingawa, wakati wewe kuunda faili kawaida kutoka mwanzo,

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sababu ya kuwa kwa kawaida wewe si unataka kuwa na faili yoyote juu ya mfumo wako kuwa executable,

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hivyo kweli una kwenda katika na manually kufanya hivyo.

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Njia rahisi ya kufanya hivyo ni pamoja na amri chmod,

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na chmod + x anasema kuongeza kidogo executable

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sababu kuna kidogo kusoma, kuandika na kidogo kidogo executable,

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r, w na x,

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na kusema chmod + x geuka juu kidogo executable

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kwa basi faili kwamba sisi bayana, ambayo katika kesi hii itakuwa dynamic.php.

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>> [Mwanafunzi] Ni kwamba akageuka juu kwa kila mtu?

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Hebu angalia hii nje, hivyo ni jinsi gani mimi kuangalia kuona ruhusa?

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Je, unajua jinsi ningependa kuangalia kuona ruhusa ya faili?

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[Inaudible mwanafunzi majibu]

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Samahani? >> [Mwanafunzi] XSD.

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XSD inatupa faili katika HACKS.

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Kuorodhesha mafaili yote,-l, atanionyeshea wote wa files katika saraka yangu

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aina ya katika muda wao, orodha verbose, na hivyo hapa tunaona kwamba

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faili hii dynamic.php

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umebadilisha mara iliyopita Novemba 5, saa 04:21.

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mmiliki wa faili hili ni jharvard.

199
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Hiyo ni mtumiaji ambaye ni logged in

200
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Hiyo ni mtumiaji Mimi ni kazi kama,

201
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na kama wewe ni pia katika appliance wewe pia kufanya kazi kama jharvard mtumiaji.

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Wewe ni katika kundi la wanafunzi,

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na haya ni mambo ambayo utaona mara nyingi ya kutosha.

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>> Tunaweza kwenda katika mengi ya undani hapa,

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lakini kwa sehemu kubwa ya nini unataka kuangalia wakati wewe ni kuangalia na kuona

206
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kama au faili executable kimsingi ni

207
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mtumiaji ambaye anamiliki SVG, mmiliki,

208
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hivyo hii jharvard, na kisha tuna

209
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bits ruhusa juu hapa upande wa kushoto,

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na njia ya kusoma hii ni kwamba kidogo mwisho

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kawaida hutumiwa kwa kuashiria kama au-angalau katika kesi hii

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kidogo hii ya mwisho mara nyingi kuwa na kuweka tangazo kuonyesha

213
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kwamba faili ni directory na si tu faili kawaida.

214
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Kisha zifuatazo 3 bits haki hapa

215
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kuamua permissions kuwa mmiliki wa faili ina,

216
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hivyo katika kesi hii jharvard, kama mmiliki wa faili, unaweza kusoma na kuandika faili hii,

217
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lakini kuna dash akisema kwamba jharvard hawezi kutekeleza faili hii.

218
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ijayo 3 bits ni kwa ajili ya kundi, hivyo hii ni kundi ya wanafunzi,

219
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hivyo kama kulikuwa nyingi watumiaji wa juu appliance yangu,

220
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na tulikuwa na watumiaji mbalimbali kama sehemu ya kundi wanafunzi,

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basi wanaweza kusoma yote faili hii, lakini hawawezi kuandika,

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na vivyo hivyo mtu mwingine, dunia

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anaweza tu kusoma faili hili pia.

224
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Kuna nzuri, mrefu writeup kuhusu hili,

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hivyo unaweza kusoma online.

226
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Katika spec kuweka tatizo sisi kwenda katika hili kwa undani zaidi.

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>> [Mwanafunzi] Je 218 akimaanisha dunia?

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218 ni-mbali juu ya kichwa yangu mimi nina kusahau,

229
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lakini hakuna.

230
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Hebu angalia. Mimi blanking juu ya haki ya kwamba sasa.

231
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Nyuma kwa nini sisi walikuwa karibu na huyu chmod + x

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ambapo sisi alitaka kutoa ruhusa executable dynamic.php,

233
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na swali lilikuwa kama hii bila kutoa ruhusa executable kwa kila mtu

234
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au tu jharvard, na tunaweza kuona hili kwa

235
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mbio amri na kuandika ls-l,

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na sasa tunaona kwamba ni alama kama kutekelezwa.

237
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Unaweza kuona kwamba kulikuwa mabadiliko ya rangi.

238
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Sasa dynamic.php waliotajwa katika kijani,

239
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na inaonekana kama jibu la swali ni nini, Charlotte?

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[Charlotte] tu jharvard. >> Tu jharvard, yeah.

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>> Kama sisi alitaka kugeuka kidogo executable juu kwa kila mtu

242
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jinsi tunavyoweza kufanya hivyo?

243
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Mawazo yoyote? >> A + x?

244
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Yeah, kwa uhakika.

245
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Charlotte alisema tunaweza kufanya chmod ya x + ya dynamic.php,

246
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na sasa ikiwa sisi kukimbia ls-l tunaona kwamba bits executable

247
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ni kweli akageuka juu kwa kila mtu.

248
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Na unaweza kweli kufanya kinyume cha hili, hivyo unaweza kugeuka kuwa mbali kwa kila mtu

249
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kutumia bala.

250
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Sasa ni akageuka mbali, na sasa tunaweza kugeuka kuwa nyuma kwa jharvard

251
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ili tuweze kweli kukimbia sasa,

252
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na sasa wewe kuona wakati sisi kukimbia code hii maalum #! mstari saa ya juu,

253
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#! mstari, aliiambia shell,

254
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aliiambia terminal yetu hey, wakati faili hii ni kukimbia,

255
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kutumia / Usr / bin / php kutafsiri faili hii

256
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na kisha magazeti pato.

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[Inaudible mwanafunzi swali]

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Hakika, basi mimi kitabu nyuma juu. Tu kama hii.

259
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Utaona wote wa maelekezo haya kuanza na chupa hii na kisha kumweka Moderators,

260
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wakati mwingine huitwa shebang, hash bang.

261
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>> [Mwanafunzi] Tunawezaje kukimbia na dynamic.php php kabla sisi kufanya hivyo executable?

262
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swali ni jinsi gani tunaweza kukimbia hii kutumia binary PHP

263
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wakati dynamic.php si executable?

264
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Hii ni super muhimu kwa sababu hii ni hasa jinsi

265
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itakavyo kazi wakati wewe kuandika tatizo kuweka 7.

266
00:19:06,000 --> 00:19:09,000
Zaidi ya muda files PHP si moja kwa moja la kutekelezwa.

267
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njia kwamba kazi ni kwa sababu ni binary PHP kwamba kutekelezwa.

268
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mkalimani ni kitu ambacho wanaendelea kunyongwa,

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na hivyo kile ni kufanya ni halisi slurping katika yaliyomo yote

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ya faili wetu dynamic.php na line kwenda kwa mstari

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na utekelezaji wa amri hizo, hivyo ni kutumia faili wetu PHP

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kama orodha ya maelekezo.

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Ni si moja kwa moja utekelezaji yake.

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Hiyo ambapo sisi kusema kwamba hizi files ni kufasiriwa wakati kukimbia.

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Ni kukimbia wakati Lugha badala ya kitu ambacho amedhamiria wakati kukusanya,

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si lugha compiled kama C.

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>> Je, kuna njia ya kupata muda kukimbia Lugha ya kutenda kama ikiwa ni wakati kukusanya lugha,

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kama kama una mbio wote kufanyika katika server

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badala ya-unajua ninachomaanisha?

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Ndiyo, hivyo swali ni

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kuna njia ya kupata lugha wakati kukimbia kutenda zaidi kama aina kukusanya wakati wa lugha?

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Na huko ni, I mean, kwamba ni eneo kazi ya utafiti kwa ajili ya mengi ya makampuni haya.

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Naamini Facebook amefanya mengi ya kazi na PHP

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na kuandaa ni chini, na kufanya hivyo kwa haraka, optimizing ni

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tangu tovuti yao imejengwa juu ya PHP.

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Kama tumekuwa kufuatia node.js wakati wote,

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ambayo ni aina ya mkalimani JavaScript

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kuwa na uwezo wa kukimbia JavaScript nje ya kivinjari, nje ya mtandao browser yako,

289
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kwa sababu kijadi JavaScript ingekuwa tu kukimbia ndani ya Firefox au Chrome,

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na itakuwa kutumika kufanya Animations baridi kutokea kwenye mtandao

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na kufanya mtandao wako ukurasa nguvu.

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Hiyo umejengwa juu ya kazi kubwa ambayo Google amefanya

293
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kufanya JavaScript na C + +

294
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kumfunga pamoja, hivyo kuna mengi ya utafiti kazi kwa

295
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kupata hizi lugha ya kiutendaji na optimize yao,

296
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hasa kwa sababu watu wengi wanaweza code katika PHP na JavaScript

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kwa sababu ni rahisi sana.

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Ni mengi nicer. Huna kuyatumia.

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Huna aina yaliyo karibu.

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Walitaka kupata faida ya lugha hizi kukusanya wakati

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pamoja na yote ya kuangalia aina na kasi na chini matumizi ya kumbukumbu na yote ya kwamba

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wakati bado kudumisha kubadilika na urahisi wa matumizi ya wadogo hawa karibu zaidi.

303
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>> Nyuma na mpango wetu wa awali wa shambulio hilo.

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Sisi tumepewa chache ya maswali haya hapa katika spec tatizo letu kuweka.

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Hebu kuzipitia kweli haraka, na tutaweza kwenda kuzunguka chumba.

306
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Charlotte, ni aina gani ni 3.50?

307
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[Charlotte] Hiyo ni mara mbili >> Ni mara mbili..

308
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Jimmy, ni nini hii moja ijayo? >> Safu.

309
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safu, kushangaza, na Jared, ni nini fopen?

310
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[Yaredi] Ni rasilimali >>. Ni rasilimali.

311
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Hiyo ni aina ya mwezi mmoja, si nyota ya SVG, si faili.

312
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Ni rasilimali ni aina katika PHP,

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na mimi nina sorry, Ella, null mwisho ni nini?

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Null.

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Null, ni jinsi gani yameandikwa katika PHP? >> Njia hiyo hiyo.

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njia sawa, miji mikuu? >> Yeah.

317
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Yeah, haki ya wote.

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Hapa sisi kwenda, sisi tumepewa mbili, sisi tumepewa safu,

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sisi tumepewa rasilimali, na kisha sisi tumepewa null.

320
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Hebu angalia sasa umeona-

321
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hebu angalia, hivyo sasa mimi nadhani nini mimi pia wanataka kufanya ni kuvuta up

322
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hii ukurasa wa mtandao wa kulia hapa, hii php.net / mwongozo,

323
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hivyo kama wewe guys nakala hiyo na kufungua kivinjari.

324
00:23:01,000 --> 00:23:07,000
Mimi nina kwenda kuvuta up Chrome, kuweka kwamba in

325
00:23:07,000 --> 00:23:10,000
Nataka kukuonyeshea hii si tu kwa sababu

326
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tunaweza kuongea siku zote juu ya aina na mambo ambayo yote fun

327
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bali kwa sababu hii ni mwongozo PHP,

328
00:23:19,000 --> 00:23:23,000
na kuna mengi ya programmers PHP huko nje.

329
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Kuna mengi ya Nje PHP huko nje,

330
00:23:26,000 --> 00:23:31,000
na matokeo yake, kuna mengi ya nyaraka kwenye PHP,

331
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na mwongozo, hii php.net, ni mahali mzuri wa kwenda

332
00:23:36,000 --> 00:23:43,000
wakati wowote wewe ni kuwa na maswali kuhusu nini ni njia bora ya kufanya X katika PHP

333
00:23:43,000 --> 00:23:45,000
au nini kazi kuangalia kama?

334
00:23:45,000 --> 00:23:49,000
Aina tu ya kupata ukoo na nini hii inaonekana kama sababu

335
00:23:49,000 --> 00:23:54,000
wewe utakuwa kuja hapa mara nyingi, kidogo kwa ajili ya tatizo kuweka 7.

336
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>> Kama wewe kuishia kufanya mradi wa mwisho kwamba anatumia PHP

337
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hii itakuwa mahali utasikia kuwa vizuri sana khabari.

338
00:24:04,000 --> 00:24:09,000
Mara nyingi watu njia ya kufanya hivyo ni wao kutumia Google kutafuta tovuti,

339
00:24:09,000 --> 00:24:16,000
na hawana kutumia sanduku tafuta kwamba ni juu hapa katika haki ya juu, ambayo ni aina ya vidogo.

340
00:24:16,000 --> 00:24:19,000
Kama wewe ni googling karibu kwa kitu cha kufanya na PHP na unaweza kuona

341
00:24:19,000 --> 00:24:24,000
moja ya viungo mwongozo pop up unaweza kawaida kutegemea kuwa

342
00:24:24,000 --> 00:24:31,000
kama rasilimali haki nzuri.

343
00:24:31,000 --> 00:24:34,000
Ajabu, hivyo nje ya aina hizi, tu nje ya udadisi,

344
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ambayo ndio kuwa si sisi kuonekana?

345
00:24:37,000 --> 00:24:40,000
Chochote hatujaona hapa?

346
00:24:40,000 --> 00:24:44,000
[Mwanafunzi] rejea. >> Tuliona rasilimali na wito fopen.

347
00:24:44,000 --> 00:24:48,000
[Mwanafunzi] vitu >> vitu. Hatujaona kwa uhakika.

348
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Callbacks hatujaona.

349
00:24:51,000 --> 00:24:54,000
Kuna baadhi ya hawa Pseudo-aina.

350
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Sisi dhahiri kuona tu integer na mbili.

351
00:24:57,000 --> 00:25:01,000
Hatukumwona baadhi ya wengine, hivyo kama sisi bonyeza integers

352
00:25:01,000 --> 00:25:08,000
tunaweza kuona kuna yoyote integers mengine kwamba wana hapa?

353
00:25:08,000 --> 00:25:11,000
Je, wote-hivyo integer, integer, integer.

354
00:25:11,000 --> 00:25:14,000
Baadhi ya lugha kuwa kubwa aina integer,

355
00:25:14,000 --> 00:25:23,000
kama tuliona juu ya MySQL leo kulikuwa int na kisha int kubwa.

356
00:25:23,000 --> 00:25:25,000
Cool.

357
00:25:25,000 --> 00:25:28,000
>> Hivyo, PHP mwongozo.

358
00:25:28,000 --> 00:25:37,000
Turudi kwa spec tatizo letu kuweka, na tutaweza sasa kitabu chini ya ukurasa 4.

359
00:25:37,000 --> 00:25:41,000
Moja ya mambo ambayo hutokea wakati kupata lugha hizi

360
00:25:41,000 --> 00:25:49,000
kwamba hawana kuandika tuli, hivyo lugha hizi ambapo una kutangaza

361
00:25:49,000 --> 00:25:52,000
aina ya mbele hadi variable

362
00:25:52,000 --> 00:26:00,000
ni wewe kupata kesi ambapo unaweza kuanza kuwa na vigezo wa aina tofauti

363
00:26:00,000 --> 00:26:04,000
Kushirikiana na kila mmoja,

364
00:26:04,000 --> 00:26:09,000
na PHP gani jambo hili ambapo anajaribu kufanya

365
00:26:09,000 --> 00:26:13,000
nini anser kuwa jambo la busara kufanya

366
00:26:13,000 --> 00:26:18,000
wakati una 2 aina tofauti wanavyohusiana.

367
00:26:18,000 --> 00:26:24,000
Kwa mfano, tunapotazama katika mistari haya ya maadili ya haki hapa

368
00:26:24,000 --> 00:26:29,000
unaweza kuona kwamba sisi tumepewa kile kinachotokea wakati

369
00:26:29,000 --> 00:26:38,000
sisi kujaribu na kuongeza string 1-2 integer.

370
00:26:38,000 --> 00:26:41,000
Nini kinatokea kama sisi kujaribu na kuongeza string kwamba si thamani numeric

371
00:26:41,000 --> 00:26:48,000
lakini badala ya wahusika halisi, CS na idadi 50?

372
00:26:48,000 --> 00:26:51,000
Kisha tutaweza kuona ni kuna kitu tofauti ambayo hufanyika ambapo

373
00:26:51,000 --> 00:26:56,000
badala ya kuongeza string kwa idadi sisi ni kuongeza idadi ya kamba,

374
00:26:56,000 --> 00:27:00,000
na kadhalika na kadhalika kwa uhakika ambapo sisi ni kupata

375
00:27:00,000 --> 00:27:05,000
baadhi ya aina ya mambo weird haki hapa ambapo sisi tumepewa 7 + kweli.

376
00:27:05,000 --> 00:27:09,000
Nini heck haina maana?

377
00:27:09,000 --> 00:27:19,000
>> Kama wewe guys kwenda mbele na kuweka baadhi ya kanuni hii katika appliance yako.

378
00:27:19,000 --> 00:27:27,000
Unaweza kuitunza katika dynamic.php.

379
00:27:27,000 --> 00:27:30,000
Tutaweza kuona nini kinatokea.

380
00:27:41,000 --> 00:27:43,000
[Mwanafunzi] Tu kutumia magazeti, si printf?

381
00:27:43,000 --> 00:27:52,000
Yeah, hivyo utapata kwamba magazeti pia ni kazi halali kwa uchapishaji katika PHP.

382
00:27:52,000 --> 00:27:54,000
Kuna njia nyingi tofauti ya kufanya hivyo.

383
00:27:54,000 --> 00:27:58,000
Tutaweza kuona na michache ya mifano baadaye mara moja tunaanza kuzungumza

384
00:27:58,000 --> 00:28:02,000
kuhusu tatizo kipekee kwamba sisi ni kwenda kuandika

385
00:28:02,000 --> 00:28:06,000
na kisha tatizo viwango kwamba sisi ni kwenda kuandika

386
00:28:06,000 --> 00:28:09,000
kwamba hata kama tuna fopen na fclose

387
00:28:09,000 --> 00:28:15,000
hiyo ni mara nyingi si njia rahisi ya kusoma katika maudhui ya faili.

388
00:28:15,000 --> 00:28:21,000
PHP ina mengi ya holdovers haya C-kama.

389
00:28:21,000 --> 00:28:28,000
[Mwanafunzi] Wakati mimi kuweka katika yote 6 ya mambo mimi tu kupata namba moja kama pato.

390
00:28:28,000 --> 00:28:36,000
[Nate H.] Wakati wewe kuweka katika yote 6 ya mambo haya.

391
00:28:36,000 --> 00:28:39,000
Hebu angalia ni kwa sababu ni uwezekano wa-

392
00:28:39,000 --> 00:28:46,000
jambo moja ni kwamba simu hizi magazeti si terminated mwishoni na mistari mpya.

393
00:28:46,000 --> 00:28:49,000
Kuna hakuna mstari mpya kutenganisha kila ya simu hizi magazeti,

394
00:28:49,000 --> 00:28:51,000
hivyo labda wewe ni kupata moja kubwa ya idadi,

395
00:28:51,000 --> 00:28:58,000
na ni kweli tu amalgam ya wahusika mpya line.

396
00:28:58,000 --> 00:29:00,000
[Mwanafunzi] Sawa, jinsi gani mimi kuhakikisha-

397
00:29:00,000 --> 00:29:03,000
Naam, kuna rundo ya njia tofauti.

398
00:29:03,000 --> 00:29:06,000
Unaweza manually kuweka katika magazeti ya tabia mpya line,

399
00:29:06,000 --> 00:29:09,000
mwangwi wa tabia mpya line,

400
00:29:09,000 --> 00:29:12,000
magazeti ya mstari mpya.

401
00:29:12,000 --> 00:29:16,000
[Mwanafunzi] Basi echo ni kitu kimoja kama printf?

402
00:29:16,000 --> 00:29:21,000
>> Printf ni kama C printf

403
00:29:21,000 --> 00:29:24,000
ambapo wewe ni uchapishaji string formatted.

404
00:29:24,000 --> 00:29:32,000
Wewe ni kusambaza string format na kisha vigezo vyote placeholder.

405
00:29:32,000 --> 00:29:39,000
Ni mara nyingi kitu ambacho si kutumika-

406
00:29:39,000 --> 00:29:42,000
hebu angalia, kama disclaimer,

407
00:29:42,000 --> 00:29:48,000
Mimi ni chini ya ukoo na PHP kuliko mimi na lugha nyingine za mtandao,

408
00:29:48,000 --> 00:29:53,000
na wakati mimi iliyowekwa katika PHP mimi kawaida si kutumia printf

409
00:29:53,000 --> 00:29:59,000
kwa sababu mimi kupata kasi ya kutumia nyongeza katika kitabu string uwezo kwamba ina,

410
00:29:59,000 --> 00:30:04,000
ambayo tutaweza kwenda na mimi nitakuonyesha katika haki ya pili,

411
00:30:04,000 --> 00:30:08,000
ambapo katika C sisi aina ya kufanya jambo hili hacky ya kupata magazeti nje vizuri.

412
00:30:08,000 --> 00:30:16,000
Unaweza kweli kuweka vigezo moja kwa moja katika masharti katika PHP.

413
00:30:16,000 --> 00:30:22,000
Printf ni aina ya overly muda mrefu kwa nini mimi kawaida kufanya. Ndiyo, Ella.

414
00:30:22,000 --> 00:30:25,000
[Ella] ujumla kama kupata Hazrat kosa inamaanisha-

415
00:30:25,000 --> 00:30:30,000
kama kwenye C haina kukuambia hasa ambapo kosa ni na nini,

416
00:30:30,000 --> 00:30:34,000
hivyo haina maana kwamba kuangalia njia code yako yote na takwimu ni nje?

417
00:30:34,000 --> 00:30:39,000
Ni kawaida zaidi ya walengwa zaidi ya hiyo.

418
00:30:39,000 --> 00:30:48,000
Nadhani katika kesi hiyo ilikuwa mbali kidogo,

419
00:30:48,000 --> 00:30:51,000
hivyo nadhani katika kesi hiyo sisi walikuwa missing semicolon.

420
00:30:51,000 --> 00:30:54,000
Ni alikuwa anajaribu kufanya akili ya kila kitu,

421
00:30:54,000 --> 00:30:57,000
hivyo kama lugha hizi kufasiriwa, mkalimani kwenda kujaribu

422
00:30:57,000 --> 00:31:01,000
na kufanya bora zake kufanya kila kitu kazi ipasavyo.

423
00:31:01,000 --> 00:31:04,000
>> Utaona, kwa mfano, katika JavaScript

424
00:31:04,000 --> 00:31:10,000
wewe utakuwa mara nyingi-line kauli ya mwisho na semicolon tu kama wanavyofanya katika PHP,

425
00:31:10,000 --> 00:31:13,000
tu kama wanavyofanya katika C.

426
00:31:13,000 --> 00:31:15,000
Katika baadhi ya wakalimani JavaScript JavaScript

427
00:31:15,000 --> 00:31:20,000
katika mengi ya browsers kuweka katika semicolons kwa wewe

428
00:31:20,000 --> 00:31:23,000
kama kutokea kwa kuwa kukosa kwao.

429
00:31:23,000 --> 00:31:29,000
Wao nitajaribu na malazi kwa baadhi sloppiness sehemu yako.

430
00:31:29,000 --> 00:31:34,000
Hiyo ambapo inaweza kuwa na kujaribu na kujaribu na kujaribu kufanya mambo ya kazi,

431
00:31:34,000 --> 00:31:36,000
na kisha hatimaye itakuwa kupata kwa uhakika ambapo anasema sawa,

432
00:31:36,000 --> 00:31:38,000
Mimi siwezi kufanya mambo ya kazi juu ya kuziokoa, na hiyo ambapo utapata idadi mstari

433
00:31:38,000 --> 00:31:44,000
kwamba inaweza kuonekana mbali kidogo kutoka mahali halisi.

434
00:31:44,000 --> 00:31:47,000
Sawa, hivyo hebu kwenda kwa njia hii kweli haraka.

435
00:31:47,000 --> 00:31:50,000
Sisi kushoto mbali na Ella, hivyo hebu kwenda juu kwa Missy,

436
00:31:50,000 --> 00:31:54,000
na Missy, nini magazeti ya string 1 2 pamoja na idadi kukupa?

437
00:31:54,000 --> 00:31:56,000
[Missy] 3 >> 3..

438
00:31:56,000 --> 00:31:59,000
Je, hiyo mantiki? Aina ya?

439
00:31:59,000 --> 00:32:02,000
Je, ni kukupa namba? Je, ni kukupa kamba?

440
00:32:02,000 --> 00:32:05,000
[Missy] namba >> Ni idadi..

441
00:32:05,000 --> 00:32:09,000
Lakini ni uchapishaji, hivyo ni kwenda kukupa baadhi ya aina ya kamba.

442
00:32:09,000 --> 00:32:12,000
>> Jambo moja tunaweza kufanya kwa kuangalia hii nje

443
00:32:12,000 --> 00:32:21,000
ni kama sisi kufanya $ var = 1 + 2

444
00:32:21,000 --> 00:32:28,000
na kisha sisi kusema mwangwi wa gettype,

445
00:32:28,000 --> 00:32:33,000
hivyo sisi ni kutumia aina ya tatu ya uchapishaji hapa.

446
00:32:33,000 --> 00:32:39,000
Sasa tunaweza kuona nini kinatokea hapa.

447
00:32:39,000 --> 00:32:42,000
Hapa kile tulichopata ni tulipata integer nje ya hii.

448
00:32:42,000 --> 00:32:45,000
Hata ingawa tulikuwa akiongeza kuwa hili string kwa idadi,

449
00:32:45,000 --> 00:32:48,000
sisi hawakuwa kupata kamba nje ya hayo, kama Missy alisema.

450
00:32:48,000 --> 00:32:52,000
Sisi walikuwa kupata integer.

451
00:32:52,000 --> 00:32:57,000
Sawa, hivyo hebu angalia, ijayo juu, Kevin.

452
00:32:57,000 --> 00:32:59,000
CS + 50? >> [Kevin] 50.

453
00:32:59,000 --> 00:33:02,000
[Nate H.] 50. Je, hiyo mantiki?

454
00:33:02,000 --> 00:33:04,000
[Kevin] Yeah.

455
00:33:04,000 --> 00:33:06,000
[Nate H.] Kwa nini? Kwa nini ni maana kufanya wewe?

456
00:33:06,000 --> 00:33:11,000
[Kevin] Kwa sababu ni kuwa tu kamba, kuwa na idadi thamani sifuri.

457
00:33:11,000 --> 00:33:16,000
Yeah, kubwa.

458
00:33:16,000 --> 00:33:20,000
Aina ya hali ya utata, lakini ni vizuri kujua nini kinatokea.

459
00:33:20,000 --> 00:33:25,000
Stella, nini kitatokea na idadi 1 + string 2?

460
00:33:25,000 --> 00:33:27,000
[Stella] 3 >> 3 tena..

461
00:33:27,000 --> 00:33:30,000
Na katika kesi hii, tunapata kamba au kamba ya namba?

462
00:33:30,000 --> 00:33:36,000
>> Hebu kutoa hii kujaribu.

463
00:33:36,000 --> 00:33:43,000
Anybody kasi zaidi kuliko mimi kupata jibu? Charlotte?

464
00:33:43,000 --> 00:33:46,000
Oh, mimi didn't-sawa, hebu angalia, tunakwenda kufanya aina moja ya kitu

465
00:33:46,000 --> 00:33:49,000
ambapo sisi tumepewa idadi plus kamba, na tunakwenda echo aina,

466
00:33:49,000 --> 00:33:51,000
kuona nini sisi kupata.

467
00:33:51,000 --> 00:33:55,000
Sisi pia kupata integer.

468
00:33:55,000 --> 00:33:58,000
Haijalishi ambayo moja ni kamba, ambayo moja ni idadi.

469
00:33:58,000 --> 00:34:00,000
Bado tuko kwenda kupata integer.

470
00:34:00,000 --> 00:34:04,000
Ni bado anaenda kufanya kile sisi kutarajia.

471
00:34:04,000 --> 00:34:09,000
Haki ya wote, hivyo Sam, nini kuhusu 90 + 9 chupa ya bia juu ya ukuta?

472
00:34:09,000 --> 00:34:12,000
[Sam] 99 >> 99..

473
00:34:12,000 --> 00:34:15,000
Hakuna chupa ya bia juu ya ukuta, ingawa.

474
00:34:15,000 --> 00:34:17,000
Hiyo inatupa kidogo na taarifa zaidi kuhusu nini kinatokea.

475
00:34:17,000 --> 00:34:21,000
[Sam] Kama ameandika 9 katika barua

476
00:34:21,000 --> 00:34:23,000
basi ingekuwa 90, sawa?

477
00:34:23,000 --> 00:34:26,000
[Nate H.] Yeah.

478
00:34:26,000 --> 00:34:30,000
swali lilikuwa kama tunatarajia imeandikwa 9 nje kama N-I-N-E

479
00:34:30,000 --> 00:34:34,000
ingekuwa sisi Gotten 99 au 90?

480
00:34:34,000 --> 00:34:38,000
Tunatarajia kupata 90.

481
00:34:38,000 --> 00:34:42,000
Ni literally kuangalia tu kwa wahusika tarakimu.

482
00:34:42,000 --> 00:34:46,000
Ni si smart kutosha kutambua maneno ya idadi na kwamba mambo ya ajabu. Ndiyo.

483
00:34:46,000 --> 00:34:48,000
>> [Mwanafunzi] Je, kuna kitu kama typecasting katika PHP?

484
00:34:48,000 --> 00:34:54,000
Kuna, na ni njia hasa ungefanya katika C.

485
00:34:54,000 --> 00:34:56,000
Je kuhusu 10/7, Charlotte?

486
00:34:56,000 --> 00:34:58,000
[Charlotte] 1.4285.

487
00:34:58,000 --> 00:35:01,000
[Nate H.] Yeah, hivyo nini kinaweza kuwa inashangaza kuhusu hili?

488
00:35:01,000 --> 00:35:04,000
Nini kingetokea kama alivyofanya hii aina moja ya kitu katika C,

489
00:35:04,000 --> 00:35:06,000
kama alivyofanya 10/7 katika C?

490
00:35:06,000 --> 00:35:08,000
[Charlotte] Ingekuwa tu kukupa-kulingana na jinsi typecasted mimi nadhani

491
00:35:08,000 --> 00:35:12,000
ingekuwa kukupa tu idadi ndogo ya tarakimu baada ya decimal.

492
00:35:12,000 --> 00:35:16,000
Yeah, hivyo idadi ndogo ya tarakimu baada ya decimal.

493
00:35:16,000 --> 00:35:21,000
Nini kingine inaweza kuwa-itakuwa ni ya kukupa tarakimu yoyote baada ya decimal?

494
00:35:21,000 --> 00:35:28,000
Mara nyingi si hivyo tena, kulingana na jinsi wewe ni typecasting

495
00:35:28,000 --> 00:35:31,000
ni au anaweza kubadilisha kwa idadi floating uhakika.

496
00:35:31,000 --> 00:35:35,000
Hapa ilikuwa aina ya nice kwamba alifanya.

497
00:35:35,000 --> 00:35:40,000
Alikuwa na sisi umeonyesha wewe hii nyuma tulipoanza kufanya aina hii ya mambo ndani ya C

498
00:35:40,000 --> 00:35:44,000
pengine ingekuwa alifanya kidogo maana zaidi

499
00:35:44,000 --> 00:35:48,000
kwamba hana tu kwenda 1.

500
00:35:48,000 --> 00:35:51,000
Na kisha hatimaye, Jamie, nini kuhusu 7 + kweli?

501
00:35:51,000 --> 00:35:53,000
[Jamie] 8. >> 8.

502
00:35:53,000 --> 00:35:56,000
Hiyo ina maana gani?

503
00:35:56,000 --> 00:35:58,000
Mimi nadhani ni tu anatoa thamani ya kweli ya 1.

504
00:35:58,000 --> 00:36:01,000
Yeah. Nini kinatokea kama sisi mabadiliko kwamba kwa uongo?

505
00:36:01,000 --> 00:36:04,000
[Mwanafunzi] 7.

506
00:36:04,000 --> 00:36:09,000
Yeah, hivyo kumbuka ambapo sisi kuzungumza juu ya maadili haya binary,

507
00:36:09,000 --> 00:36:12,000
1 kuwa juu, 0 kuwa mbali?

508
00:36:12,000 --> 00:36:17,000
Sasa tuna kweli ni 1, 0 ni uongo,

509
00:36:17,000 --> 00:36:21,000
na unaweza kuwa umeona hii mifano C kwamba tumefanya huu muhula uliopita,

510
00:36:21,000 --> 00:36:27,000
lakini kihistoria aina bool katika C haijawahi aina halisi,

511
00:36:27,000 --> 00:36:32,000
hivyo watu wametumia 0 na 1 katika nafasi ya kweli na uongo.

512
00:36:32,000 --> 00:36:35,000
Hii ni ishara ya kwamba.

513
00:36:35,000 --> 00:36:39,000
>> Sawa, hivyo moja muhimu kuhusu sehemu yote hii

514
00:36:39,000 --> 00:36:41,000
ni kwamba tuna aina hizi mbalimbali.

515
00:36:41,000 --> 00:36:43,000
Wao unaweza kuingiliana na kila mmoja.

516
00:36:43,000 --> 00:36:49,000
Wao mara nyingi unaweza kuingiliana na kila mmoja katika njia ambazo ni nzuri, kama tumeona hapa.

517
00:36:49,000 --> 00:36:53,000
Ni nzuri na kuwa na uwezo wa kuwa string 1 na namba 2, kuongeza yao pamoja na kupata 3.

518
00:36:53,000 --> 00:36:55,000
Kwamba hufanya akili.

519
00:36:55,000 --> 00:36:59,000
Hata hivyo, wakati wewe kuandika tovuti, na hasa wakati wewe ni usindikaji

520
00:36:59,000 --> 00:37:04,000
mtumiaji wa pembejeo, hivyo kusema ve yameandikwa fomu mtandao

521
00:37:04,000 --> 00:37:09,000
ambayo inakusanya habari kutoka kwa mtumiaji na kisha unaendelea na mchakato ni

522
00:37:09,000 --> 00:37:13,000
tarehe ya mwisho ya nyuma, upande wa server katika code yako PHP

523
00:37:13,000 --> 00:37:18,000
kama wewe ni kutarajia kwamba thamani kwamba mtumiaji typed katika na in

524
00:37:18,000 --> 00:37:23,000
kwa fomu yako kwa kuwa integer au kuwa floating kumweka idadi au kitu kama hicho

525
00:37:23,000 --> 00:37:29,000
unahitaji kupanga kuwatupia

526
00:37:29,000 --> 00:37:34,000
na kisha kufanya baadhi ya kuangalia aina.

527
00:37:34,000 --> 00:37:41,000
>> Wewe hawataki tu kutegemea mfumo huu juggling aina ya kufanya mambo ya kazi nje,

528
00:37:41,000 --> 00:37:48,000
hasa kwa sababu za usalama na haki kwa robustness ya tovuti yako.

529
00:37:48,000 --> 00:37:51,000
Tu kitu kukumbuka kwamba wakati wowote wewe ni utunzaji data za fomu,

530
00:37:51,000 --> 00:37:57,000
chochote ambacho huja katika posta au superglobals Get

531
00:37:57,000 --> 00:38:01,000
kuhakikisha kwamba daima ni kuhalalisha na kubadili na typecast yake.

532
00:38:01,000 --> 00:38:04,000
Na kama tu sisi walikuwa wanazungumza juu ya muda iliyopita typecasting kwamba

533
00:38:04,000 --> 00:38:08,000
katika PHP ni sawa kama katika C ambapo una mabano

534
00:38:08,000 --> 00:38:14,000
na basi aina.

535
00:38:14,000 --> 00:38:16,000
Keep kwamba katika akili.

536
00:38:16,000 --> 00:38:19,000
Moja ya kazi kwamba atakuja katika Handy wakati wewe ni kufanya hii

537
00:38:19,000 --> 00:38:22,000
ni sisi tumekuwa kutumia-na hii ni aina ya kama kando-

538
00:38:22,000 --> 00:38:27,000
sisi tumekuwa kutumia kazi hii gettype haki hapa

539
00:38:27,000 --> 00:38:30,000
kufikiri ya aina ya kutofautiana,

540
00:38:30,000 --> 00:38:37,000
na wakati huu ni Handy kwa debugging na kuona aina gani variable ni

541
00:38:37,000 --> 00:38:42,000
wewe hawataki kutumia hii, kwa mfano, katika hali ambapo

542
00:38:42,000 --> 00:38:57,000
wewe ni kuangalia kuona kama gettype ya $ var = integer kufanya kitu.

543
00:38:57,000 --> 00:39:01,000
Hii ni mbaya, mbaya, mbaya.

544
00:39:01,000 --> 00:39:09,000
Badala yake kuna kazi hizi inaitwa ni integer, ni kamba,

545
00:39:09,000 --> 00:39:14,000
ni safu ya kwamba unataka kutumia badala yake, hivyo katika kesi hii

546
00:39:14,000 --> 00:39:18,000
nini napenda wanataka kufanya badala ya guy haki hii hapa

547
00:39:18,000 --> 00:39:31,000
ni kutumia ni integer var.

548
00:39:31,000 --> 00:39:37,000
Na wao ni mara nyingi inajulikana ni is_ * katika maana kwamba unaweza kuchukua nafasi ya * kwa integer,

549
00:39:37,000 --> 00:39:43,000
kamba, nakadhalika, na tu kuhakikisha kweli haraka

550
00:39:43,000 --> 00:39:50,000
ni hii ni int php.

551
00:39:50,000 --> 00:39:59,000
Inaonekana kama wewe unaweza kufanya ama ni int au kuna integer vile vile?

552
00:39:59,000 --> 00:40:06,000
Ndiyo, pak, hivyo int integer Majina bandia.

553
00:40:06,000 --> 00:40:08,000
Cool.

554
00:40:14,000 --> 00:40:17,000
>> Je ni vipi tuna kufanya?

555
00:40:17,000 --> 00:40:20,000
Hebu kuchukua kasi kidogo.

556
00:40:20,000 --> 00:40:24,000
Sasa sisi ni kwenda kuzungumza kuhusu arrays, hivyo kama unaweza kuona

557
00:40:24,000 --> 00:40:28,000
katika sehemu ya pili ya spec sisi majadiliano kuhusu jinsi arrays katika PHP

558
00:40:28,000 --> 00:40:31,000
ni tofauti kidogo kuliko katika C.

559
00:40:31,000 --> 00:40:34,000
Kwa kweli, wao ni aina ya amalgam ya

560
00:40:34,000 --> 00:40:36,000
arrays kwamba ve kuja kujua na upendo katika C

561
00:40:36,000 --> 00:40:40,000
ambapo kila kitu ni ya aina moja

562
00:40:40,000 --> 00:40:43,000
kuhifadhiwa mfululizo na contiguously katika kumbukumbu,

563
00:40:43,000 --> 00:40:46,000
na una fahirisi hizi numeric.

564
00:40:46,000 --> 00:40:49,000
Una index 0, index 1, index 2,

565
00:40:49,000 --> 00:40:53,000
na kuhifadhi maadili katika fahirisi hizo.

566
00:40:53,000 --> 00:40:57,000
Wewe pia katika C, wakati aliandika Speller, mengi ya wewe

567
00:40:57,000 --> 00:41:00,000
alifanya hash meza mbinu, na ninyi kuona kwamba kuna tulikuwa

568
00:41:00,000 --> 00:41:03,000
aina mbalimbali za kuhifadhi ambapo tulikuwa ramani

569
00:41:03,000 --> 00:41:07,000
muhimu kwa thamani, hivyo wakati wewe alijaribu kuhifadhi kitu katika meza hash

570
00:41:07,000 --> 00:41:11,000
alikuwa na bayana kwamba alitaka kuhifadhi na muhimu maalum,

571
00:41:11,000 --> 00:41:17,000
na muhimu ambayo amedhamiria eneo la thamani na ambapo itakuwa kuhifadhiwa.

572
00:41:17,000 --> 00:41:22,000
Ve got aina ya wote ya dhana wale kinachotokea wakati huo huo katika safu PHP,

573
00:41:22,000 --> 00:41:27,000
na matokeo yake, sisi mara nyingi simu arrays haya associative

574
00:41:27,000 --> 00:41:33,000
ambapo sisi ni kujihusisha muhimu katika thamani.

575
00:41:33,000 --> 00:41:39,000
Katika sehemu hii ya pili sisi majadiliano juu ya safu rahisi PHP

576
00:41:39,000 --> 00:41:45,000
ambapo tuna funguo b, na c,

577
00:41:45,000 --> 00:41:53,000
wote nyuzi, ramani kwa integers 1, 2, na 3.

578
00:41:53,000 --> 00:41:57,000
Na unaweza kuwa na funguo za aina mbalimbali.

579
00:41:57,000 --> 00:42:00,000
>> Unaweza kuwa na funguo baadhi ya kwamba ni masharti, baadhi funguo kwamba ni integers.

580
00:42:00,000 --> 00:42:03,000
Unaweza kuwa na maadili ya aina tofauti.

581
00:42:03,000 --> 00:42:06,000
Unaweza kuwa na thamani hiyo kamba, thamani hiyo integer,

582
00:42:06,000 --> 00:42:11,000
thamani hiyo ni kitu au nyingine safu, kwa mfano,

583
00:42:11,000 --> 00:42:16,000
wote katika kitu sawa safu, ambayo ni aina ya weird.

584
00:42:16,000 --> 00:42:20,000
Huwezi kuwa na safu hiyo tu got aina moja ya kipengele katika hilo.

585
00:42:20,000 --> 00:42:26,000
Unaweza kuwa na mambo mengi tofauti kinachoendelea huko.

586
00:42:26,000 --> 00:42:33,000
Kitu nyingine kutambua ni kwamba wakati wa kufanya kuona kitu kama hiki katika code yako,

587
00:42:33,000 --> 00:42:38,000
ambayo ni halali PHP kutangaza safu tu kama hii, 0, 1, 2, 3, 4, 5,

588
00:42:38,000 --> 00:42:43,000
kwamba atatangaza initialized $ arr kuwa hii safu.

589
00:42:43,000 --> 00:42:48,000
Lakini nini wewe kweli kupata chini ya Hood ni aina hii ya thabiti

590
00:42:48,000 --> 00:42:55,000
kizazi ya funguo ambapo sisi tumepewa 0-0, 1-1, 2-2, 3-3.

591
00:42:55,000 --> 00:42:59,000
Na zinageuka kuwa hata kama una safu kama guy hii hapa

592
00:42:59,000 --> 00:43:03,000
ambapo una b, na c kama funguo

593
00:43:03,000 --> 00:43:09,000
na kisha kuanza kutumia msukumo safu mbinu kuanza kutumia safu kama stack,

594
00:43:09,000 --> 00:43:12,000
hivyo unaweza kuona kwamba kitu hiki safu, safu hii ni kweli akikosa overloaded.

595
00:43:12,000 --> 00:43:15,000
Tunaweza kutumia kama safu. Tunaweza kutumia kama meza hash.

596
00:43:15,000 --> 00:43:19,000
Tunaweza kutumia kama stack.

597
00:43:19,000 --> 00:43:22,000
Baada ya kuanza kusukuma mambo kwenye safu hii

598
00:43:22,000 --> 00:43:30,000
Jambo la kwanza kushinikiza kwenye hii itakuwa index 0 na kisha index 1 na index 2.

599
00:43:30,000 --> 00:43:33,000
Unaweza kupata aina hii ya kizazi thabiti ya funguo

600
00:43:33,000 --> 00:43:38,000
isipokuwa wewe taja yao wazi.

601
00:43:38,000 --> 00:43:43,000
njia bayana funguo waziwazi, bila shaka, ni kwa kutumia hii nukuu bracket,

602
00:43:43,000 --> 00:43:48,000
ambayo ni sawa na arrays isipokuwa badala ya kuruhusu tu

603
00:43:48,000 --> 00:43:54,000
fahirisi integer katika hapa, sasa sisi kuruhusu kitu chochote.

604
00:43:54,000 --> 00:43:57,000
Kama unataka muhimu yako kuwa kamba, wewe d bayana ni kama hii.

605
00:43:57,000 --> 00:44:06,000
Kama unataka kuwa ni int, wewe taja kwa int unataka kutumia.

606
00:44:06,000 --> 00:44:13,000
>> Maswali juu ya kwamba hadi sasa?

607
00:44:13,000 --> 00:44:18,000
Moja ya mambo mazuri juu ya wazo hili

608
00:44:18,000 --> 00:44:26,000
ni kwamba unaweza tu milele kuwa moja ya thamani ya kuhifadhiwa na muhimu hasa.

609
00:44:26,000 --> 00:44:32,000
Kama sisi kurudi nyuma zaidi kwa wetu appliance-basi mimi kufuta baadhi ya mambo haya.

610
00:44:32,000 --> 00:44:47,000
Na hebu sema mimi initialize safu kuwa 0, 1, 2, kufanyika.

611
00:44:47,000 --> 00:44:55,000
Kama mimi sasa kujua kwamba, kwa mfano, kama mimi echo $ arr [0]

612
00:44:55,000 --> 00:44:59,000
Mimi naenda kupata 0 thamani kuchapishwa,

613
00:44:59,000 --> 00:45:05,000
na tangu hapo unaweza tu milele kuwa moja ya thamani ya kuhifadhiwa kwa ajili ya muhimu hasa

614
00:45:05,000 --> 00:45:11,000
kama mimi kuhifadhi kitu saa $ arr [0], kusema,

615
00:45:11,000 --> 00:45:16,000
basi mimi kujua wakati mimi echo $ arr [0] tena

616
00:45:16,000 --> 00:45:19,000
Sitakuja kupata 0 kuchapishwa kama kabla.

617
00:45:19,000 --> 00:45:24,000
Mimi tu kwenda kupata.

618
00:45:24,000 --> 00:45:30,000
Hivyo hii ni kimsingi akisema kwamba siwezi kuwa na $ arr [0] hifadhi 2 tofauti maadili.

619
00:45:30,000 --> 00:45:34,000
Haiwezi kuhifadhi wote 0 na kamba, kama hii literally nafasi

620
00:45:34,000 --> 00:45:38,000
nini ilikuwa saa $ arr [0] hapo awali.

621
00:45:38,000 --> 00:45:43,000
sababu mimi kuleta hii ni kukimbia, kuona nini kinatokea.

622
00:45:43,000 --> 00:45:47,000
Angalia hapa kwamba mimi got 0 kuchapishwa na kisha chini hapa.

623
00:45:47,000 --> 00:45:51,000
Hakuna mstari mpya kuna sababu nilikuwa wavivu na hawakuwa kuweka kwamba in

624
00:45:51,000 --> 00:45:54,000
Nini baridi kuhusu hili ni tunaweza kutumia hii kama njia

625
00:45:54,000 --> 00:46:00,000
kukamata wazo hili la kuweka

626
00:46:00,000 --> 00:46:07,000
ambapo hatuwezi kuwa na funguo nyingi ndani ya safu.

627
00:46:07,000 --> 00:46:10,000
Hatuwezi kuwa na funguo kufanana ndani ya safu.

628
00:46:10,000 --> 00:46:17,000
Siwezi kuwa na 0 muhimu na thamani 1 na 0 muhimu na thamani

629
00:46:17,000 --> 00:46:21,000
au ufunguo 0 na thamani ya kweli.

630
00:46:21,000 --> 00:46:27,000
funguo ni wote-kuna tu 1 muhimu katika safu.

631
00:46:27,000 --> 00:46:32,000
Hata ingawa unaweza kuwa na thamani sawa kuhifadhiwa

632
00:46:32,000 --> 00:46:35,000
mara nyingi katika safu chini ya funguo mbalimbali

633
00:46:35,000 --> 00:46:42,000
kuwa si rahisi kuwa na kufanana funguo mara nyingi katika safu yako PHP.

634
00:46:42,000 --> 00:46:47,000
>> Kama sisi kuangalia tatizo hili ijayo, unique.php,

635
00:46:47,000 --> 00:46:51,000
ambapo tunataka kufungua faili PHP

636
00:46:51,000 --> 00:46:54,000
ulio na orodha ya masharti, moja kamba kwa kila mstari,

637
00:46:54,000 --> 00:47:01,000
na tunataka kupata yote ya masharti ya kipekee katika faili kwamba

638
00:47:01,000 --> 00:47:06,000
wote sisi kufanya ni kutumia moja ya arrays haya PHP

639
00:47:06,000 --> 00:47:12,000
na kutumia masharti katika faili kama funguo safu hii

640
00:47:12,000 --> 00:47:17,000
na kushika uppdatering safu yetu kama sisi kuhifadhi funguo hizi mpya.

641
00:47:17,000 --> 00:47:22,000
Kama sisi kusoma kila mstari nje ya faili tunaweza kuhifadhi katika safu,

642
00:47:22,000 --> 00:47:28,000
na mwishoni tutakuwa na kama funguo wetu katika safu yetu ya

643
00:47:28,000 --> 00:47:34,000
yote ya masharti ya kipekee ndani ya faili.

644
00:47:34,000 --> 00:47:37,000
Je, hiyo mantiki?

645
00:47:37,000 --> 00:47:41,000
Hebu angalia jinsi hii matendo.

646
00:47:41,000 --> 00:47:49,000
Sisi ni kwenda kufungua, kulingana na spec, faili mpya iitwayo unique.php.

647
00:47:49,000 --> 00:47:58,000
Fungua. Lo, sorry, faili mpya.

648
00:47:58,000 --> 00:48:03,000
Sisi ni kwenda kuanza kuwa mbali na vitambulisho kuanza sawa na mwisho.

649
00:48:03,000 --> 00:48:17,000
Sisi ni kwenda kuokoa ni katika sehemu ya 9, na sisi ni kwenda kumwita unique.php.

650
00:48:17,000 --> 00:48:25,000
Okay, sasa zoom in

651
00:48:25,000 --> 00:48:32,000
Wazo hapa ni kufungua faili,

652
00:48:32,000 --> 00:48:38,000
kusoma katika mstari na mstari wa faili.

653
00:48:38,000 --> 00:48:46,000
Kwa kila mstari katika faili

654
00:48:46,000 --> 00:48:51,000
tutaweza kuwa na safu ambapo tuna

655
00:48:51,000 --> 00:49:03,000
 mstari kama ufunguo yetu.

656
00:49:03,000 --> 00:49:09,000
Na kisha wakati sisi kupata mwisho hapa

657
00:49:09,000 --> 00:49:17,000
$ Arr ya funguo ni mistari ya kipekee

658
00:49:17,000 --> 00:49:25,000
kutoka faili tangu tunajua kwamba kama mimi kuweka mstari katika safu hii

659
00:49:25,000 --> 00:49:33,000
mara nyingi itakuwa tu kuweka kuu thamani ya zamani,

660
00:49:33,000 --> 00:49:46,000
na tunaweza kweli kuweka safu line katika kama yenyewe tu kama hiyo.

661
00:49:46,000 --> 00:49:48,000
>> Hii ni aina ya weird.

662
00:49:48,000 --> 00:49:52,000
Sisi ni hifadhi hiyo muhimu thamani jozi tena na tena na tena,

663
00:49:52,000 --> 00:50:00,000
lakini tangu sisi ni uhakika kuwa kutakuwa tu 1 muhimu inaitwa mstari

664
00:50:00,000 --> 00:50:05,000
hivyo kama tuna faili kwamba anasema-faili ya noises mnyama na ina lililosokotwa, lililosokotwa,

665
00:50:05,000 --> 00:50:11,000
meow, meow, moo, moo, na kila wakati tunasoma kelele mnyama nje

666
00:50:11,000 --> 00:50:15,000
kama lililosokotwa na sisi kuhifadhi katika safu yetu sisi kupata lililosokotwa, na kisha mara ya pili

667
00:50:15,000 --> 00:50:20,000
sisi kuhifadhi lililosokotwa itakuwa overwrite mara ya kwanza kwamba sisi ni kuhifadhiwa.

668
00:50:20,000 --> 00:50:25,000
Katika mwisho tutaweza moja tu ya kuingia katika safu

669
00:50:25,000 --> 00:50:33,000
kwa kila noises mnyama katika faili mnyama wetu noises.

670
00:50:33,000 --> 00:50:41,000
Je guys kujisikia hakika kwamba wewe unaweza kukabiliana na ufunguzi wa faili katika PHP?

671
00:50:41,000 --> 00:50:45,000
Njia moja ya kufanya hivyo-hebu kwenda juu ya njia hii haraka-moja ya kufanya hivyo

672
00:50:45,000 --> 00:50:50,000
ni pamoja na fopen, kama tuliona mapema.

673
00:50:50,000 --> 00:50:55,000
Unaweza fopen some_file.txt.

674
00:50:55,000 --> 00:50:59,000
Unaweza kufungua ni katika mode kusoma, kama vile katika C.

675
00:50:59,000 --> 00:51:02,000
Hiyo ni moja kikamilifu nzuri njia ya kufanya hivyo.

676
00:51:02,000 --> 00:51:05,000
Wewe pia kisha kwa ajili ya kusoma katika mstari na mstari wa faili

677
00:51:05,000 --> 00:51:12,000
wana kazi moja, wengi wao, kwamba alifanya katika C.

678
00:51:12,000 --> 00:51:14,000
Una fgets.

679
00:51:14,000 --> 00:51:17,000
Una feof, ingawa sisi si kama kutumia

680
00:51:17,000 --> 00:51:22,000
kwa sababu, kumbuka, hiyo haikuwa kubwa katika C.

681
00:51:22,000 --> 00:51:25,000
Unaweza kufanya hivyo kwa njia hiyo hiyo,

682
00:51:25,000 --> 00:51:34,000
lakini hapa ni kitu kweli cool.

683
00:51:34,000 --> 00:51:41,000
Samahani, sijui wanataka kufanya $ faili, lakini kuna kazi kuitwa faili katika PHP,

684
00:51:41,000 --> 00:51:47,000
na kazi haki hii hapa ni baridi kwa sababu ni wasomaji yaliyomo yote

685
00:51:47,000 --> 00:51:52,000
ya faili kwamba wewe taja, hivyo some_file.txt,

686
00:51:52,000 --> 00:51:56,000
anayesoma yaliyomo yote ya faili hili ndani ya safu

687
00:51:56,000 --> 00:52:03,000
na kisha inakuwezesha iterate juu yake, ambayo ni pretty nifty.

688
00:52:03,000 --> 00:52:07,000
>> Kama sisi kwenda, kwa mfano, kivinjari wetu

689
00:52:07,000 --> 00:52:14,000
na sisi kuangalia Google kwa ajili ya faili PHP

690
00:52:14,000 --> 00:52:23,000
unaweza kuona hapa kwamba mwongozo wetu anasema faili kwamba anasoma faili nzima katika safu,

691
00:52:23,000 --> 00:52:27,000
na tunaweza file_get_contents kurudi yaliyomo ya faili kama kamba,

692
00:52:27,000 --> 00:52:30,000
lakini kawaida tu kupata ni kama safu ni nzuri kwa kweli kwa sababu kile yake

693
00:52:30,000 --> 00:52:33,000
ni inavunja it up ili kila kipengele

694
00:52:33,000 --> 00:52:37,000
katika safu ni moja mstari wa faili,

695
00:52:37,000 --> 00:52:41,000
hivyo kama sisi kuangalia faili 0, hiyo ni mstari wa kwanza wa faili.

696
00:52:41,000 --> 00:52:46,000
File 1, mstari wa pili, saizi 2, tatu line, na kadhalika na kadhalika.

697
00:52:46,000 --> 00:52:50,000
Je, si ni kuwa nzuri kama kwamba ilikuwa wote mnatakiwa kufanya katika C?

698
00:52:50,000 --> 00:52:53,000
Pretty nifty.

699
00:52:53,000 --> 00:52:59,000
Daudi alionyesha hili katika hotuba, na nahau alionyesha alikuwa

700
00:52:59,000 --> 00:53:03,000
kwamba kwa kuongeza kiwango chetu kwa kitanzi-katika PHP tulikuwa kwamba

701
00:53:03,000 --> 00:53:09,000
kwa ($ i = 0; i <10; i + +),

702
00:53:09,000 --> 00:53:16,000
na unaweza kufanya hivyo katika PHP pia, kitu kimoja-

703
00:53:16,000 --> 00:53:27,000
sisi pia kuwa hii kujenga cool kuitwa foreach.

704
00:53:27,000 --> 00:53:32,000
Foreach ni kweli Handy wakati iterating juu ya arrays au miundo hizi data

705
00:53:32,000 --> 00:53:36,000
kwa sababu inaruhusu wewe kujiondoa kila kipengele cha safu

706
00:53:36,000 --> 00:53:42,000
bila ya kuwa na manually kufanya Indexing mwenyewe,

707
00:53:42,000 --> 00:53:46,000
bila ya kuwa na manually kujenga variable index, increment yake,

708
00:53:46,000 --> 00:53:51,000
kujiondoa thamani katika safu katika hatua hiyo, kwa sababu hilo ni jambo la kawaida sana ya kufanya.

709
00:53:51,000 --> 00:53:54,000
>> Wewe pengine wamefanya kwamba tani ya mara wakati wewe walikuwa wakifanya C stuff

710
00:53:54,000 --> 00:54:00,000
juu ya muhula, hivyo pamoja na hii foreach

711
00:54:00,000 --> 00:54:06,000
tunaweza kitanzi juu ya safu hii ya SVG,

712
00:54:06,000 --> 00:54:12,000
na syntax ni kwamba tunataka sasa kitanzi juu ya safu hii

713
00:54:12,000 --> 00:54:18,000
na bayana kwamba variable tunakwenda kutumia kuhifadhi

714
00:54:18,000 --> 00:54:27,000
kipengele cha safu hii ndani ya nchi, serikali za mitaa kwa upeo wa kitanzi foreach,

715
00:54:27,000 --> 00:54:32,000
ni tunakwenda kuiita mstari.

716
00:54:32,000 --> 00:54:38,000
Kama ni faili ya maneno tu na kuna neno moja katika mstari

717
00:54:38,000 --> 00:54:43,000
tunaweza kuiita neno pia, kwa kweli tu unaweza kumpa jina hili,

718
00:54:43,000 --> 00:54:49,000
chochote unataka simu yake,

719
00:54:49,000 --> 00:55:02,000
na kisha ndani ya kitanzi unaweza kufanya chochote unataka na line hii kutofautiana.

720
00:55:02,000 --> 00:55:08,000
Kama siyo ya kutosha kupata thamani ya safu na wewe pia wanataka kupata

721
00:55:08,000 --> 00:55:17,000
index pamoja na hayo unaweza specify jina kwa index

722
00:55:17,000 --> 00:55:22,000
kama vile thamani, na sasa unaweza kupata vigezo 2.

723
00:55:22,000 --> 00:55:26,000
Una $ i na mstari

724
00:55:26,000 --> 00:55:30,000
ambapo $ i ni index katika safu,

725
00:55:30,000 --> 00:55:38,000
na line ni mstari kwamba wewe Rudishwa kutoka faili.

726
00:55:38,000 --> 00:55:49,000
Kwa mfano, kama sisi alitaka magazeti nje echo line 0 wa faili kama hii,

727
00:55:49,000 --> 00:55:57,000
tunaweza kufanya hivyo tu kama hii, "Line $ i ya faili ni $ line,"

728
00:55:57,000 --> 00:56:02,000
na hapa ni kitu sisi pia hawajaona bado ama

729
00:56:02,000 --> 00:56:13,000
ambapo nimekuwa tu kabisa juu ya skipped% hii% nzima s d biashara

730
00:56:13,000 --> 00:56:16,000
kwamba alikuwa na kukabiliana na katika C, na badala yake mimi tumeenda moja kwa moja kwa

731
00:56:16,000 --> 00:56:19,000
kuandika vigezo katika mstari katika kamba wangu.

732
00:56:19,000 --> 00:56:23,000
>> Hii inaitwa variable nyongeza katika kitabu, kamba nyongeza katika kitabu

733
00:56:23,000 --> 00:56:26,000
ambapo wewe ni stuffing vigezo sahihi katika, na mkalimani PHP

734
00:56:26,000 --> 00:56:31,000
ni smart kutosha wakati ni kusoma kwa njia ya kamba kwamba huanza na mbili quotes-

735
00:56:31,000 --> 00:56:34,000
si enda quotes, pamoja na nyuzi moja alinukuliwa huwezi kufanya hili-

736
00:56:34,000 --> 00:56:38,000
lakini kwa masharti mbili alinukuliwa wasomaji kupitia ni kuangalia kwa vigezo.

737
00:56:38,000 --> 00:56:42,000
Ni uwindaji yao chini, na kama anaona vigezo itachukua thamani ya kutofautiana

738
00:56:42,000 --> 00:56:47,000
na mambo ndani ya kamba kama inaweza kubadili kwenye uwakilishi kamba,

739
00:56:47,000 --> 00:56:51,000
ambayo ni pretty nifty.

740
00:56:51,000 --> 00:56:56,000
Kwa sasa, hebu maoni nje ya mapumziko ya kila kitu,

741
00:56:56,000 --> 00:57:00,000
kuokoa huu, na nini tunaweza kufanya sasa ni tunaweza kufungua faili

742
00:57:00,000 --> 00:57:06,000
kwamba tunaweza kuwaita some_file.txt-hebu kuunda faili mpya-

743
00:57:06,000 --> 00:57:15,000
na tunaweza kuweka katika rundo la stuff nonsense katika hapa tu kwa mtihani kila kitu nje,

744
00:57:15,000 --> 00:57:25,000
niuokoe, simu yake some_file.txt, kama mimi kufanya juu hapa saa ya juu,

745
00:57:25,000 --> 00:57:33,000
na sasa ikiwa mimi zoom nje tu kuhakikisha kila kitu ni sawa katika saraka-

746
00:57:33,000 --> 00:57:36,000
inaonekana kama nina unique.php na some_file.txt katika saraka ya sawa.

747
00:57:36,000 --> 00:57:42,000
Kama mimi kukimbia php unique.php

748
00:57:42,000 --> 00:57:51,000
kuona jinsi Prints nje ya kila mstari katika faili wangu na kile line ni?

749
00:57:51,000 --> 00:57:56,000
>> Hiyo ni pretty nguvu, haki?

750
00:57:56,000 --> 00:58:03,000
Angalia, ni alichukua mistari 3 ya maadili ya kufungua faili.

751
00:58:03,000 --> 00:58:08,000
Naam, 4 mstari wa kanuni. Siwezi kuhesabu leo, kwa uwazi.

752
00:58:08,000 --> 00:58:13,000
Lakini kweli tu 2 kuvutia mstari wa kanuni, kwa sababu 2 wengine walikuwa braces curly,

753
00:58:13,000 --> 00:58:17,000
lakini katika code sana hii tulikuwa na uwezo wa kufungua faili, iterate kwa njia hiyo,

754
00:58:17,000 --> 00:58:20,000
kuvuta nje ya idadi ya mstari na mstari yenyewe

755
00:58:20,000 --> 00:58:24,000
na magazeti nje.

756
00:58:24,000 --> 00:58:26,000
Cool stuff. Charlotte.

757
00:58:26,000 --> 00:58:28,000
[Charlotte] Nina swali kuhusu syntax.

758
00:58:28,000 --> 00:58:33,000
Hivyo foreach inahusika na kila mstari wa moja ya faili kwamba wewe kufungua,

759
00:58:33,000 --> 00:58:37,000
na kisha wakati unataka kufanya mambo kwa line moja kila wewe tu kufanya hivyo kama

760
00:58:37,000 --> 00:58:39,000
na kisha kujiunga thamani.

761
00:58:39,000 --> 00:58:41,000
[Nate H.] Nini unaweza kufanya hapa hapa-swali lilikuwa

762
00:58:41,000 --> 00:58:46,000
foreach ina nini na safu, hivyo syntax foreach

763
00:58:46,000 --> 00:58:51,000
ni kweli foreach, na taarifa kwamba kuna nafasi hakuna

764
00:58:51,000 --> 00:58:53,000
au kitu chochote kati ya kwa na kila mmoja.

765
00:58:53,000 --> 00:58:56,000
Wao wana haki ya kwenda karibu na kila mmoja,

766
00:58:56,000 --> 00:59:00,000
na kisha inachukua katika safu,

767
00:59:00,000 --> 00:59:05,000
na kisha una hii Keyword nyingine iitwayo kama kwamba ina kuwa huko,

768
00:59:05,000 --> 00:59:11,000
na kisha baada ya kama unaweza ama kuweka moja kutofautiana jina,

769
00:59:11,000 --> 00:59:14,000
katika kesi ambayo mtaenda kuunganisha nje maadili ya safu,

770
00:59:14,000 --> 00:59:20,000
si fahirisi, au kama wewe kufanya hivyo kama tumekuwa imeandikwa chini

771
00:59:20,000 --> 00:59:24,000
kupata funguo na maadili.

772
00:59:24,000 --> 00:59:33,000
Una kipengele foreach wa safu au jozi ya safu kama keyed kwa thamani

773
00:59:33,000 --> 00:59:38,000
au kama tu thamani.

774
00:59:38,000 --> 00:59:40,000
Kutegemea juu ya nini unahitaji, kama huna haja funguo,

775
00:59:40,000 --> 00:59:42,000
basi unaweza kwenda na thamani.

776
00:59:42,000 --> 00:59:45,000
Kama unataka funguo unaweza kwenda pamoja nao pia.

777
00:59:45,000 --> 00:59:48,000
>> [Charlotte] Pia niligundua sisi kamwe alitangaza i au mstari.

778
00:59:48,000 --> 00:59:51,000
Jinsi gani hata kujua nini wao ni?

779
00:59:51,000 --> 00:59:53,000
[Nate H.] Nini maana na kutangaza?

780
00:59:53,000 --> 00:59:57,000
[Charlotte] Sisi kamwe aliwaambia nini i au mstari njia.

781
00:59:57,000 --> 01:00:01,000
[Nate H.] Sisi kamwe aliiambia kompyuta nini i au mstari maana katika suala la-

782
01:00:01,000 --> 01:00:05,000
[Charlotte] Hayo wao ni indexed au kwamba they're-

783
01:00:05,000 --> 01:00:09,000
[Nate H.] Sisi kamwe aliiambia ni kwamba hii ni walidhani kuwa index au muhimu na thamani,

784
01:00:09,000 --> 01:00:13,000
na kwamba kwa sababu hiyo ni mkalimani PHP.

785
01:00:13,000 --> 01:00:17,000
Hii hutumika kama tamko na anasema sawa, muhimu ni kwenda kuwa

786
01:00:17,000 --> 01:00:20,000
variable kuitwa i kuhifadhiwa katika variable kuitwa i.

787
01:00:20,000 --> 01:00:24,000
thamani ni kwenda kuhifadhiwa katika mstari variable walioitwa,

788
01:00:24,000 --> 01:00:28,000
hivyo hii hutumika kama tamko la vigezo hivi

789
01:00:28,000 --> 01:00:35,000
na anasema $ i ni muhimu, na $ line ni thamani.

790
01:00:35,000 --> 01:00:37,000
Yeah, Ella.

791
01:00:37,000 --> 01:00:41,000
[Ella] Kama funguo ni si kufanyika numerically

792
01:00:41,000 --> 01:00:44,000
jinsi gani kuamua nini ili itakavyo magazeti kila kitu?

793
01:00:44,000 --> 01:00:47,000
Je, ni kama tu ili ni aliingia katika?

794
01:00:47,000 --> 01:00:51,000
[Nate H.] Hebu kutoa ni kujaribu.

795
01:00:51,000 --> 01:00:57,000
Hebu kujenga variable kuitwa arr,

796
01:00:57,000 --> 01:01:06,000
na tunaweza kufanya inakwenda 7.

797
01:01:06,000 --> 01:01:19,000
Hebu sema 0 huenda kwa safu mwingine na 1, 2, au apple.

798
01:01:19,000 --> 01:01:30,000
Hebu sema 7 inakwenda 1, b inakwenda 2,

799
01:01:30,000 --> 01:01:39,000
na 3 inakwenda 4.

800
01:01:39,000 --> 01:01:44,000
Hii ni aina ya mfano mambo kuangalia kwa sababu sisi ni kuchanganya juu

801
01:01:44,000 --> 01:01:47,000
masharti na integers kila mahali.

802
01:01:47,000 --> 01:01:50,000
Hakuna utaratibu halisi wa safu hii.

803
01:01:50,000 --> 01:01:55,000
I mean, tunaweza kuagiza kila kitu katika herufi kwa funguo.

804
01:01:55,000 --> 01:01:57,000
Tunaweza kuamuru kila kitu alphabetically na thamani.

805
01:01:57,000 --> 01:02:00,000
>> Tunaweza kujaribu na kuchukua katika akaunti kwamba baadhi ni masharti, baadhi ni ints,

806
01:02:00,000 --> 01:02:03,000
na tunaweza kujaribu na kubadili yao yote kwa aina moja na kuona nini kinatokea,

807
01:02:03,000 --> 01:02:09,000
au sisi inaweza kufikiria yao kwa thamani ambayo sisi tayari iliwaingia

808
01:02:09,000 --> 01:02:14,000
ambapo sisi kuweka hii katika guy kwanza, hii guy katika pili, hii guy katika tatu,

809
01:02:14,000 --> 01:02:19,000
this guy katika kadha wa nne, et.

810
01:02:19,000 --> 01:02:23,000
Hebu kuona nini kinatokea wakati sisi kukimbia hii code.

811
01:02:23,000 --> 01:02:29,000
Kama sisi kitabu chini na kufanya aina moja ya kitu,

812
01:02:29,000 --> 01:02:31,000
na hapa siyo kuchapa nje mistari mpya.

813
01:02:31,000 --> 01:02:35,000
Wakati kusoma mambo ya nje ya faili ilikuwa ikiwa ni pamoja na mistari mpya katika maadili,

814
01:02:35,000 --> 01:02:38,000
ambayo ilikuwa ni kwa nini kuchapishwa nicely, ambapo hapa haikuwa,

815
01:02:38,000 --> 01:02:40,000
hivyo ndiyo sababu kila kitu ni smushed pamoja.

816
01:02:40,000 --> 01:02:44,000
Hebu kuongeza katika mstari kwamba mwezi tu kufanya mambo mazuri.

817
01:02:44,000 --> 01:02:51,000
Hebu rerun yake, na hivyo hapa

818
01:02:51,000 --> 01:02:54,000
kuangalia nini kilitokea.

819
01:02:54,000 --> 01:03:00,000
Ni kuchapishwa kila kitu nje katika utaratibu ambao sisi kuiweka katika safu.

820
01:03:00,000 --> 01:03:10,000
Haina kuhifadhi ili katika maana ya kwamba.

821
01:03:10,000 --> 01:03:15,000
>> Tukirudi kwenye tatizo hili la uniques

822
01:03:15,000 --> 01:03:20,000
ambapo tunataka kuwa na uwezo wa iterate juu ya SVG,

823
01:03:20,000 --> 01:03:24,000
na tutaweza kuwapa some_file.txt,

824
01:03:24,000 --> 01:03:27,000
na sisi ni kwenda iterate juu yake kama hii.

825
01:03:27,000 --> 01:03:31,000
Sisi alisema kuwa sisi alitaka kutumia safu kuhakikisha kwamba tunatarajia got yote ya

826
01:03:31,000 --> 01:03:36,000
kipekee mistari nje ya hapo, na tunaweza kufanya kweli kwamba urahisi

827
01:03:36,000 --> 01:03:49,000
na tu kuhifadhi katika safu kwamba sisi bila shaka kutangaza nje ya wigo wa kitanzi,

828
01:03:49,000 --> 01:03:55,000
na sisi alisema kwamba kama sisi kutumika katika mistari faili kama funguo katika safu yetu ya

829
01:03:55,000 --> 01:03:59,000
kama sisi aliingia mstari duplicate tunatarajia kuwa na thamani kuu uliopita.

830
01:03:59,000 --> 01:04:08,000
Ni si milele inawezekana kuwa na funguo 2 kwamba ni kufanana katika safu moja.

831
01:04:08,000 --> 01:04:13,000
Tunaweza kufanya tu.

832
01:04:13,000 --> 01:04:17,000
Tutaweza kujikwamua kauli hii echo haki hapa.

833
01:04:17,000 --> 01:04:24,000
Hapa sisi ni hifadhi ya mstari katika faili katika safu yetu ya

834
01:04:24,000 --> 01:04:28,000
kutumia yenyewe kama muhimu.

835
01:04:28,000 --> 01:04:32,000
Kitu, na ni zinageuka kuwa hatuna hata haja hii muhimu.

836
01:04:32,000 --> 01:04:38,000
Hatuna haja ya kuwa i kutofautiana.

837
01:04:38,000 --> 01:04:43,000
Katika hatua hii kama tulikuwa kufanya mwingine kitanzi foreach

838
01:04:43,000 --> 01:04:48,000
na sisi tulikuwa na kitanzi juu ya kila arr

839
01:04:48,000 --> 01:04:56,000
na mstari sasa kama sisi echo-oops, sorry.

840
01:04:56,000 --> 01:05:00,000
Hatuwezi kutumia comma. Tuna hii kutumia kama Keyword.

841
01:05:00,000 --> 01:05:05,000
Sasa kama sisi echo line tunapaswa kupata yote ya maneno ya kipekee katika faili.

842
01:05:05,000 --> 01:05:10,000
Kama Tunakwenda some_file.txt,

843
01:05:10,000 --> 01:05:19,000
na hebu sema sisi kufanya apple, ndizi, apple, apple, ndizi,

844
01:05:19,000 --> 01:05:22,000
kama sisi ni uchapishaji nje yote ya maneno ya kipekee katika faili hili tunapaswa tu kupata

845
01:05:22,000 --> 01:05:30,000
apple na ndizi na magazeti nje.

846
01:05:30,000 --> 01:05:36,000
Kama sisi kuokoa hii, sasa hapa tutaweza zoom nyuma katika,

847
01:05:36,000 --> 01:05:44,000
php unique.php, na ta-da.

848
01:05:44,000 --> 01:05:51,000
Tumekuwa mafanikio uniqued faili.

849
01:05:51,000 --> 01:05:55,000
>> sehemu ya mwisho ya tatizo hili ni kuuliza wewe kutatua hii safu kabla kuchapishwa nje

850
01:05:55,000 --> 01:05:58,000
kwa sababu katika mfano huu rahisi kwamba tumekuwa tu kufanyika

851
01:05:58,000 --> 01:06:04,000
sisi walikuwa na bahati kwa maana ya kwamba-file

852
01:06:04,000 --> 01:06:06,000
sisi gani mfano huu contrived kwa apples na ndizi.

853
01:06:06,000 --> 01:06:08,000
Ilikuwa tayari Iliyopangwa.

854
01:06:08,000 --> 01:06:19,000
Lakini kutumia kazi rahisi aina unaweza aina safu, ambayo ni pretty nifty.

855
01:06:19,000 --> 01:06:24,000
Jambo la mwisho nilitaka kuongea na nyie kuhusu kweli haraka

856
01:06:24,000 --> 01:06:31,000
ni kwamba aina hii ya PHP ni vizuri wote na nzuri, na ni super Handy

857
01:06:31,000 --> 01:06:43,000
kujua jinsi ya kufanya kama wewe milele haja ya kufanya kidogo, mambo haraka programmatically.

858
01:06:43,000 --> 01:06:48,000
Kwa mfano, kama mimi haja ya kuandika mpango kwamba, kusema,

859
01:06:48,000 --> 01:06:53,000
unaweka kila mtu katika sehemu Sitakuja kwenda na kuandika ni katika C.

860
01:06:53,000 --> 01:06:55,000
Ni kwenda kuwa kwa muda mrefu.

861
01:06:55,000 --> 01:06:57,000
Ni kwenda kuwa aina ya maumivu, hasa kama kuna files wanaohusika,

862
01:06:57,000 --> 01:07:00,000
tu kama wewe guys tumeona.

863
01:07:00,000 --> 01:07:05,000
Ni hivyo nice kwamba pamoja na haki hii code sana hapa hapa

864
01:07:05,000 --> 01:07:08,000
tulikuwa na uwezo wa mpasuko kwenye faili, kujiondoa maadili yote ya kipekee

865
01:07:08,000 --> 01:07:11,000
na magazeti yao nyuma nje.

866
01:07:11,000 --> 01:07:16,000
>> Hata hivyo, kwa kazi yako, kwa ajili ya miradi yako,

867
01:07:16,000 --> 01:07:20,000
kama wewe ni kujenga tovuti kwa PHP nguvu ni kwamba

868
01:07:20,000 --> 01:07:25,000
sisi ni mbio yetu files PHP kupitia mkalimani hii,

869
01:07:25,000 --> 01:07:29,000
na mkalimani ni usindikaji kila kitu ndani ya vitambulisho PHP,

870
01:07:29,000 --> 01:07:34,000
kuacha kila kitu kingine bila kuguswa na kutema mate nje ya matokeo.

871
01:07:34,000 --> 01:07:40,000
Tunaweza kufanya hili kwa kujenga HTML programmatically.

872
01:07:40,000 --> 01:07:46,000
Sasa, kama sisi kurudi nyuma kwa spec, tatizo la mwisho katika spec

873
01:07:46,000 --> 01:07:56,000
mazungumzo kuhusu hili wazo la viwango

874
01:07:56,000 --> 01:08:01,000
na kujenga drop-down menu,

875
01:08:01,000 --> 01:08:06,000
ambayo wewe au anaweza wanataka kufanya, kutegemea na nini mradi wako wa mwisho ni kufanya,

876
01:08:06,000 --> 01:08:13,000
ambayo inaruhusu user kuchagua kutoka orodha ya viwango vya wote inawezekana

877
01:08:13,000 --> 01:08:15,000
zao moja ukolezi.

878
01:08:15,000 --> 01:08:21,000
Sasa, hii ni aina ya maumivu ya aina hii nje

879
01:08:21,000 --> 01:08:25,000
na kufanya yote haya manually, hasa wakati wewe ni kuwa na kuhakikisha

880
01:08:25,000 --> 01:08:28,000
kwamba una mabano angle wote katika mahali sahihi na quotes wote katika mahali pa haki,

881
01:08:28,000 --> 01:08:34,000
hivyo kwa PHP unaweza kufanya hili programmatically, na unaweza kufanya hivi kweli haraka.

882
01:08:34,000 --> 01:08:36,000
>> Hebu angalia jinsi ya kufanya hili.

883
01:08:36,000 --> 01:08:42,000
Sisi ni kwenda kufungua faili mpya.

884
01:08:42,000 --> 01:08:46,000
Sisi ni kwenda kuweka tags wetu PHP.

885
01:08:46,000 --> 01:08:53,000
Sisi ni kwenda kumwita concentrations.php,

886
01:08:53,000 --> 01:08:58,000
na sasa wakati wewe ni kufanya hivyo, aina ya kitu nzuri kufikiri juu ya

887
01:08:58,000 --> 01:09:02,000
wakati wewe ni kujaribu kuchanganya na mechi PHP yako na HTML yako

888
01:09:02,000 --> 01:09:08,000
ni kuhesabia, sawa, kile ni sehemu kuwa nataka programmatically kuzalisha?

889
01:09:08,000 --> 01:09:11,000
Je, ni sehemu ya kwamba naweza programmatically kuzalisha?

890
01:09:11,000 --> 01:09:17,000
Ni kweli kwamba unaweza kufanya yote ya HTML yako

891
01:09:17,000 --> 01:09:19,000
ndani ya vitalu PHP.

892
01:09:19,000 --> 01:09:24,000
Unaweza echo yote ya HTML kama masharti.

893
01:09:24,000 --> 01:09:30,000
Kwa mfano, kama nataka kuanza kufanya tags kuchagua ndani ya PHP

894
01:09:30,000 --> 01:09:46,000
Naweza kusema echo, kusema chagua jina = ukolezi,

895
01:09:46,000 --> 01:09:49,000
na kisha chini chini mimi naweza kuwa na mwingine tag echo

896
01:09:49,000 --> 01:09:57,000
au mwingine aitwaye echo karibu kuchagua.

897
01:09:57,000 --> 01:10:00,000
Hii ni njia moja ya kufanya hivyo kwa sababu ya maneno haya ni halisi kwenda kufanya

898
01:10:00,000 --> 01:10:09,000
ni magazeti nje hii string wakati ni kukimbia kupitia mkalimani PHP,

899
01:10:09,000 --> 01:10:12,000
hivyo matokeo itakuwa HTML.

900
01:10:12,000 --> 01:10:18,000
Kama mimi kuokoa faili hii kama ni haki sasa

901
01:10:18,000 --> 01:10:24,000
na mimi kukimbia concentrations.php php

902
01:10:24,000 --> 01:10:26,000
kuangalia nini mimi got.

903
01:10:26,000 --> 01:10:30,000
I got hii wazi karibu kuchagua tag.

904
01:10:30,000 --> 01:10:36,000
>> Kama ningekuwa na kufanya hivi na mimi walikuwa kuokoa matokeo na faili,

905
01:10:36,000 --> 01:10:45,000
kusema, concentrations.html-kusubiri, inaonekana kama l yamepita juu kwa upande mwingine-

906
01:10:45,000 --> 01:11:02,000
sasa kama mimi kufungua hapa concentrations.html mnionavyo halali HTML faili.

907
01:11:02,000 --> 01:11:05,000
Ni kwamba aina ya weird?

908
01:11:05,000 --> 01:11:09,000
Sisi ni kutumia PHP kujenga HTML, kujenga HTML halali.

909
01:11:09,000 --> 01:11:13,000
njia ya sisi ni kufanya hivyo ni sisi ni kuwa tu magazeti PHP

910
01:11:13,000 --> 01:11:16,000
HTML kwamba tunataka kuwa na magazeti.

911
01:11:16,000 --> 01:11:20,000
Hii ni halisi jinsi tovuti PHP ni kazi.

912
01:11:20,000 --> 01:11:24,000
Wakati wewe kutembelea tovuti ya kwamba hutuma wewe kitu kama

913
01:11:24,000 --> 01:11:30,000
jambo, jambo, kitu dot com slash index.php

914
01:11:30,000 --> 01:11:33,000
kompyuta ni halisi wito up index.php,

915
01:11:33,000 --> 01:11:38,000
mbio kupitia mkalimani PHP, na chochote Junk hutoka nje

916
01:11:38,000 --> 01:11:49,000
ni kutuma nyuma kwa kivinjari na kusema hey, browser, kutafsiri hii kama HTML.

917
01:11:49,000 --> 01:11:54,000
Jambo zuri ni kwamba inaweza kuwa maumivu ya mara kwa mara kuandika echo, echo, echo, echo

918
01:11:54,000 --> 01:11:59,000
na uambatanishe kila kitu katika quotes kama hili, hivyo kama unataka kuandika

919
01:11:59,000 --> 01:12:04,000
HTML kwamba itakuja kuwa tuli mwenyewe unaweza kufanya hivyo kama hii,

920
01:12:04,000 --> 01:12:16,000
kuiweka nje, karibu ni,

921
01:12:16,000 --> 01:12:21,000
na kisha hapa wewe tu kuweka ndani tags PHP kwamba ambayo unajua

922
01:12:21,000 --> 01:12:26,000
unataka programmatically kuzalisha, na katika kesi hii ni chaguo tags wale

923
01:12:26,000 --> 01:12:31,000
kwamba ni maumivu ya kuzalisha.

924
01:12:31,000 --> 01:12:37,000
>> Kwa mfano, tunaweza kuzalisha tags chaguo elfu

925
01:12:37,000 --> 01:12:48,000
kwa kufanya kitu kama hiki, $ i <1000, i + +

926
01:12:48,000 --> 01:13:00,000
na kusema echo chaguo thamani = $-Whoops, siwezi kufanya hivyo.

927
01:13:00,000 --> 01:13:03,000
Naam, hebu kutoa ni kujaribu na kuona nini kinatokea.

928
01:13:03,000 --> 01:13:22,000
$ I na kisha kusema $ i </ chaguo.

929
01:13:22,000 --> 01:13:27,000
Badala ya kuwa na aina nje kwamba tag chaguo elfu tofauti mara

930
01:13:27,000 --> 01:13:33,000
Mimi nina kutumia PHP code kuzalisha ni moja kwa moja, programmatically.

931
01:13:33,000 --> 01:13:38,000
Aina ya nifty. Yeah.

932
01:13:38,000 --> 01:13:41,000
Nakumbuka hii kutajwa katika hotuba ama au walkthrough,

933
01:13:41,000 --> 01:13:43,000
lakini nini tofauti kati ya alama quotation,

934
01:13:43,000 --> 01:13:45,000
wale wa kawaida na mambo haya moja?

935
01:13:45,000 --> 01:13:49,000
Hiyo ni kweli kitu ambacho nimekuwa kufanyika kimakosa hapa kwamba nilikuwa naenda kukuonyeshea.

936
01:13:49,000 --> 01:13:52,000
enda quotes wala kuruhusu wahusika yoyote maalum,

937
01:13:52,000 --> 01:13:57,000
hivyo kila kitu ndani ya kamba moja alinukuliwa ni kufasiriwa kama yalivyo.

938
01:13:57,000 --> 01:14:02,000
Kama mimi alikuwa \ n ndani ya quotes moja na mimi ila hii, kwa mfano,

939
01:14:02,000 --> 01:14:07,000
na sasa mimi kwenda chini hapa na kukimbia-

940
01:14:07,000 --> 01:14:12,000
oops, ambapo mimi kwenda?

941
01:14:12,000 --> 01:14:19,000
Oh, ni kwa sababu mimi nilimsahau $.

942
01:14:19,000 --> 01:14:25,000
>> Sasa kama mimi kufungua-kweli, hapa, tutaweza kujikwamua kuandika kwa faili.

943
01:14:25,000 --> 01:14:27,000
Tutaweza tu kusoma.

944
01:14:27,000 --> 01:14:34,000
Hapa unaweza kuona kwamba mimi nimepata hii halisi \ n katika kamba, kama mstari si halisi mpya,

945
01:14:34,000 --> 01:14:38,000
na vivyo hivyo, badala ya kweli interpolating thamani ya hii variable

946
01:14:38,000 --> 01:14:42,000
alinipa $ i yenyewe, ambayo ni aina ya maumivu.

947
01:14:42,000 --> 01:14:46,000
njia ya kuzunguka hii ni kutumia quotes mbili,

948
01:14:46,000 --> 01:14:52,000
na kisha wakati matumizi ya quotes mbili itakuwa kweli

949
01:14:52,000 --> 01:14:56,000
vizuri interpolate maadili ya wote wa vigezo hivi katika hapa

950
01:14:56,000 --> 01:14:59,000
na pia kutambua hili n \ kuwa mstari mpya kuwa ni

951
01:14:59,000 --> 01:15:02,000
na si \ n.

952
01:15:02,000 --> 01:15:07,000
Kutumia ndio moja ni nzuri wakati una

953
01:15:07,000 --> 01:15:10,000
wahusika ambayo inaweza kufasiriwa kama herufi maalum kwa sababu basi hawana

954
01:15:10,000 --> 01:15:15,000
kutoroka kwao daima.

955
01:15:15,000 --> 01:15:18,000
Mambo unaweza kupata messy, na mara nyingi njia ya mimi kufanya hivyo,

956
01:15:18,000 --> 01:15:24,000
tu kufanya mambo rahisi, ni kwamba kama mimi nina kwenda kuwa na kitu chochote

957
01:15:24,000 --> 01:15:31,000
HTML kama katika code yangu mimi itabidi ni pamoja na hariri ndani ya quotes moja

958
01:15:31,000 --> 01:15:36,000
na kisha kutumia hii operator concatenation

959
01:15:36,000 --> 01:15:43,000
kwa concatenate vigezo in

960
01:15:43,000 --> 01:15:47,000
Hii ni njia nyingine ya kufanya hivyo

961
01:15:47,000 --> 01:15:52,000
ambapo sisi tumepewa dot ambayo inaenda kuunganisha hii ni kamba

962
01:15:52,000 --> 01:15:56,000
na hili na hili na hili,

963
01:15:56,000 --> 01:15:59,000
na sasa sina kutoroka hizi quotes mbili.

964
01:15:59,000 --> 01:16:02,000
Sina kutumia guy hii ili kuepuka.

965
01:16:02,000 --> 01:16:08,000
Wao utakuwa literally kuchapishwa kama quotes mbili na kisha guy hii hapa hapa.

966
01:16:08,000 --> 01:16:11,000
Hii ni njia nyingine ya kuchanganya kila kitu pamoja.

967
01:16:11,000 --> 01:16:14,000
>> [Mwanafunzi] Pia, wakati wewe aliunga gettype kulikuwa alama Nukuu hakuna wakati wote.

968
01:16:14,000 --> 01:16:22,000
Haki, hivyo echo ni aina ya pekee katika maana ya kwamba huna haja ya mabano.

969
01:16:22,000 --> 01:16:29,000
Huna haja ya kuwa na quotation alama lazima kuzunguka vigezo,

970
01:16:29,000 --> 01:16:37,000
kama ni halali kusema echo $ i, na ni kwenda kutafsiri hii kama kamba.

971
01:16:37,000 --> 01:16:44,000
Ni kwenda kufanya kutupwa, hivyo tunaweza kufanya hivyo, na kwamba ni halali pia, lakini hatuna haja yake.

972
01:16:44,000 --> 01:16:48,000
Ni hiari.

973
01:16:48,000 --> 01:16:53,000
Katika tatizo kuweka wiki hii kuangalia nje kwa mengi ya aina hii ya mambo

974
01:16:53,000 --> 01:16:58,000
ambapo wewe ni kuchanganya na vinavyolingana HTML na PHP

975
01:16:58,000 --> 01:17:08,000
tu kama hii, na sasa kama sisi kitabu nyuma na sisi kukimbia hii

976
01:17:08,000 --> 01:17:13,000
tunaweza kuona kwamba tuna rundo zima la maadili chaguo

977
01:17:13,000 --> 01:17:15,000
kwamba tu got kuchapishwa.

978
01:17:15,000 --> 01:17:20,000
Tuna HTML hii yote got yanayotokana kweli haraka kwa ajili yetu.

979
01:17:20,000 --> 01:17:22,000
Mimi itabidi kuondoka ni kama zoezi.

980
01:17:22,000 --> 01:17:24,000
Ni sawa kabisa na kusoma faili kwamba sisi alifanya mapema.

981
01:17:24,000 --> 01:17:31,000
>> Kuna faili concentrations.txt kwamba unaweza kuvuta chini kutoka CDN,

982
01:17:31,000 --> 01:17:34,000
na unaweza kufungua kutumia huo foreach hila kwamba sisi alivyofanya awali,

983
01:17:34,000 --> 01:17:39,000
na foreach wewe tu na echo chaguo na kuziba katika

984
01:17:39,000 --> 01:17:44,000
maadili sahihi, funguo sahihi na fahirisi,

985
01:17:44,000 --> 01:17:49,000
na kisha kupata kushuka chini kwamba literally inajenga

986
01:17:49,000 --> 01:17:54,000
programmatically kwa ajili yenu wote wa viwango tofauti katika Harvard.

987
01:17:54,000 --> 01:17:57,000
Jambo Handy kuwa.

988
01:17:57,000 --> 01:18:02,000
Kuna mambo mengi ya Configuration kwa zoezi hili.

989
01:18:02,000 --> 01:18:07,000
Kama hujafanya hivyo tayari kuchukua ijayo nusu saa, saa,

990
01:18:07,000 --> 01:18:10,000
baadhi ya wakati usiku wa leo dhahiri kwa hakika,

991
01:18:10,000 --> 01:18:14,000
kutembea kwa njia spec kuweka tatizo,

992
01:18:14,000 --> 01:18:20,000
kuona nini kinaendelea na kuanzisha vhosts, mwenyeji wa ndani, mambo ambayo yote.

993
01:18:20,000 --> 01:18:24,000
Jambo moja kwa kumweka nje kwa sasa ni kwamba

994
01:18:24,000 --> 01:18:30,000
katika seti zaidi tatizo tumekuwa kwenda katika folda Dropbox

995
01:18:30,000 --> 01:18:34,000
na kisha kushusha kuweka tatizo zip file na unzipping yake.

996
01:18:34,000 --> 01:18:36,000
Kwa kuweka tatizo hili wewe hawataki.

997
01:18:36,000 --> 01:18:40,000
Wewe unataka kwenda katika saraka hii vhosts.

998
01:18:40,000 --> 01:18:45,000
Wewe utakuwa unataka kwenda katika vhosts na kwenda katika saraka ya mitaa jeshi ndani yake,

999
01:18:45,000 --> 01:18:50,000
na hii ni wapi utasikia wanataka kubomoa faili zip,

1000
01:18:50,000 --> 01:18:55,000
unzip yake, na kupata tayari kwenda.

1001
01:18:55,000 --> 01:18:57,000
Itabidi kufuata hatua kwa karibu.

1002
01:18:57,000 --> 01:19:02,000
>> Kama una maswali yoyote, kutuma barua pepe, baada ya kuwa kwenye Jadili, kuja masaa ya ofisi.

1003
01:19:02,000 --> 01:19:08,000
Shukrani guys. Wiki ijayo sisi itawabidi kikao mapitio kwa chemsha bongo.

1004
01:19:08,000 --> 01:19:12,000
Kufurahia tatizo lako mwisho ya kuweka. Natumaini yote inakwenda vizuri.

1005
01:19:12,000 --> 01:19:14,000
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