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>> Doug LLOYD: Allura tagħna
video fuq sintassi PHP,

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tkellimna ħafna dwar kif PHP
jistgħu jintużaw fil-linja tal-kmand

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biex imexxu programmi b'mod li
aħna qed pretty familjari mal mit C.

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Imma kif semmejt ukoll
f'dak video, PHP

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inizjalment kien żviluppat biex
implimentazzjoni tal-ipprogrammar tal-web, websajts.

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U hekk f'dan il-video aħna qed
ser jitkellmu dwar kif aħna

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użu PHP fil-kuntest iżvilupp tal-web.

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>> Aħna nafu, diġà, minn
vidjo tagħna fuq HTML,

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li l-websajts huma mibnija
out ta 'sett ta' HTML tags

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li semantikament jiddefinixxu
l-istruttura ta 'paġna web.

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Iżda websajts li huma
mibnija bl pur HTML

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jbatu minn ħafna,
limitazzjoni serja ħafna.

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>> U biex juru din il-limitazzjoni,
ejja jikkunsidraw dan li ġej.

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Allura issa I trid tibni web page
li, kull meta l-utent żjarat IT,

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hija tagħti me-kurrent
time fil Cambridge, Mass.,

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wiri lill-aħħar minuta.

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Jekk I kienet qed tagħmel dan id-dritt issa,
I jista 'jgħid xi ħaġa bħal din.

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Ħin kurrenti fl Cambridge-- so I jkollhom
Tags HTML, tags ras, tags titolu,

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korp tags---kurrent
time fil Cambridge huwa 14:08,

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stampar ta 'żmien militari.

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>> X'jiġri jekk huwa issa 02:09, 14:09?

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Well s'issa, ma HTML, għandi
li jmorru fi u bidla li 14:09.

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U mbagħad minuta wara,
Għandi li jerġa 'jinbidel.

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U mbagħad minuta wara,
Għandi li jerġa 'jinbidel.

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U kif tista 'timmaġina, dan huwa
probabbilment l-agħar impjieg qatt.

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Int l-webmaster għal paġna web,
u kull minuta, 24 siegħa kuljum,

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għandek bżonn biex taġġorna l-ħin kurrenti mill
manwalment ftuħ time.html u li qed tinbidel

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biss li snippet ta 'kodiċi jiġifieri l-
ħin kurrenti f'sigħat u minuti.

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Li probabbilment mhux ħafna
użu tajjeb tar-riżorsi tagħna,

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kemm umani kif ukoll komputazzjoni.

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>> Websajts li huma kollha HTML
huma kompletament statika.

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L-uniku mod inti tista 'taġġorna
kontenut, kif aħna stajt biss tidher,

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huwa li manwalment tiftaħ dawk sors
files, jeditjaw minnhom, u ħlief.

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U allura meta l-utent
refreshes-paġna,

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jew iżur il-paġna għall-ewwel
time, dawn ser jiksbu l-kontenut aħħar.

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Iżda biss għaliex aħna ħadthom
editjat dan manwalment.

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>> Jekk nibdew xi taħlita PHP fil hemm,
kodiċi tagħna tista 'tieħu ħafna aktar flessibbli.

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U nistgħu jkollhom mod għall-paġni tagħna
li tkun dinamika, jew jaġġornaw lilhom infushom,

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mingħajr ma jeħtieġu foqra tagħna
webmaster fl-eżempju preċedenti

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li jkun manwalment aġġornament affarijiet.

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Huma jistgħu jagħmlu dan awtomatikament.

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Aħna ma jkollhom biex tintervjeni.

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Nistgħu tikseb xi irqad.

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Liema hija probabbilment ħaġa tajba jekk
int tagħmel ħafna ta 'programmazzjoni web.

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>> Għalhekk fl CS50 IDE, we run
web server Apache imsejħa.

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Huwa użat b'mod komuni ħafna,
sistema web server open source.

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Din is-sistema għandha l-
kapaċità li tinterpreta

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PHP, li se tkun utli jekk
inti tixtieq li tagħmel xi programmazzjoni PHP.

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>> U fl IDE CS50, għandna kmand
biex jagħmlu dan faċli ħafna li tagħmel,

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apache50 tibda.

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U mbagħad li mmejla
triq, mmejla għal, mmejla

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dir, li jinsab biss mod verament komuni ta '
jindika dak li inti stajt speċifikat hawn

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hija triq għal partikolari
direttorju li inti

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tixtieq li tkun l-għerq
sit, jew il-paġna għerq,

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jew il-folder li minnha web server tiegħek
se tibda teżamina fajls u jservu

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minnhom sa klijenti li jitolbuhom.

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Mela ejja pop quddiem għall CS50 IDE, just biex
nuruk, tassew mgħaġġla, kif taħdem din.

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>> Allura hawn fil IDE CS50, jien fil-
direttorju imsejħa Week Zero Disa.

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U jien two-- I jkollhom
eżegwit LS kmand biss

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hawn fuq biex turi li inti li għandi
żewġ direttorji fil hawn, PHP,

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li huwa s-sett ta 'fajls li I użati fid
l-video sintassi PHP, u mbagħad PHP web,

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li huwa s-sett ta 'fajls li I
tixtieq tuża f'dan il-video.

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>> U nixtieq li jibdew
eżempju web server

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mal-kontenut tal-folder PHP web
kif il-fajls huma li qiegħed ikun servut up.

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Allura dak am I se jagħmlu?

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I ser tip apache50 ispazju
tibda, PHP ispazju, web sing.

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Dik hija l-passaġġ għall-direttorju
minn fejn I bħalissa am.

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Imbagħad I hit Ikteb.

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Li għaddej biex tagħmel
ftit ta 'għalf hawn.

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U allura li għaddej biex ngħid,
Apache beda b'suċċess.

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Your sit hija issa disponibbli u at--
allura hemm il-URL għas-sit.

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Allura dak am I se jagħmlu?

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Jien ser malajr Kopja ta 'din.

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U jien ser tiftaħ up-- u
I ser zoom out ftit here--

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Jien ser jiftħu
ġdid tab fil Chrome.

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U jien ser iżuru dan URL.

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>> Jien ser hit Ikteb.

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Li għaddej biex tagħbija.

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U jien ser zoom out mill-ġdid.

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U nistgħu naraw hawn huwa l-
kontenut ta 'direttorju tiegħi web PHP.

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>> Allura issa dak li qed jiġri bażikament
hawnhekk hija, ngħidu aħna tiegħi ta 'CS50 IDE

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huwa li jservu up dawn il-fajls li
xi ħadd li titlobhom.

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U matul il-kors ta '
dan il-video, aħna ser issolvi ta

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tagħti ħarsa lejn mazz ta 'dawn
fajls differenti fil-kuntest.

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>> Li tittestja li Apache tiegħek
server qed taħdem,

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li ġeneralment se
li jkun il-każ fil CS50 IDE,

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imma jekk inti tagħmel dan b'mod aktar ġenerali,
u tibda bini web tiegħek stess

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servers, hemm verament
tip komuni ta 'analog għal,

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"dinja hello," li normalment
użat għall-web PHP iżvilupp.

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Li huwa li jkun hemm fajl
li jikkonsisti biss dan code--

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delimetru PHP stabbiliti bl PHP info,
parentesi, virgola bejniethom.

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Li bażikament huwa speċjali
Funzjoni PHP li jgħidlek

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liema verżjoni ta 'PHP inti taħdem.

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>> Għalhekk fl CS50 IDE, għandi
dan il-fajl disponibbli biss

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biex turi li inti dak li dan look like.

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Hekk jien tħares lejn indiċi tiegħi
minn PHP eżempju tiegħi.

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Apache eżempju tiegħi qed taħdem
il-kontenut tal PHP Web.

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U għandi fajl hawn imsejjaħ info.php.

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>> Jien ser ikklikkja, zoom out.

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Dan huwa dak li int ser
biex tara, pretty ħafna.

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Dan huwa biss javżak me li
server Apache tiegħi qed taħdem.

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U dan huwa, apparentement, il-
verżjoni ta 'PHP li niġri.

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Dan huwa Analog tiegħi għal "bonjour dinja."

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>> So I know affarijiet huma operattivi.

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Allura aħna qed imorru tajjeb.

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Nistgħu jipproċedu minn hawn.

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>> Mela ejja tirrevedi dik
Eżempju ħin konna

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jitkellem dwar ma webmaster fqira tagħna
li kellhom biex jaġġornaw il-paġna kostantement.

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Dan jista 'jkun tiffissa għal kemm
Nixtieq jimplimentaw affarijiet

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sabiex il-webmaster ma
għandhom iżommu aġġornament tal-ħin.

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Biss Ikun tip ta '
jiġri awtomatikament.

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>> Il stabbiliti hawn taħt, il-HTML, huwa
pretty simili, ħlief għal eċċezzjoni waħda.

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Imma hawn stajt ltqajna xi PHP fil-quċċata.

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Għandi, apparentement, sejjaħ dan
date_default_timezone_set funzjoni.

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>> U aħna ma nitkellmux dwar l
dawn il-funzjonijiet fl CS50,

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minħabba PHP probabbilment
għexieren ta 'eluf.

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Li jista 'jkun daqsxejn ta'
eżaġerazzjoni, iżda jista 'ma jkunx.

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Huwa ltqajna ħafna ta 'funzjonijiet mibnija.

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U għalhekk dan huwa funzjoni apparentement
tistabbilixxi żona ta 'ħin tiegħi bħala Istati Uniti / tal-Lvant,

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li huwa l-żona ta 'ħin li jien
bħalissa biex jagħmel dan video.

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>> Imbagħad I tagħmel sejħa biex
funzjoni imsejħa, id-data.

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U, apparentement, jien ħażna tal-
TIEGĦU ta 'xi ħaġa imsejħa, ħin.

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Allura x'inhu għaddej hawn?

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>> Ukoll, bażikament x'hemm
jiġri huwa, jien jagħmlu sejħa

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għal xi server li se
tell me dak il-ħin attwalment.

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U jien dan jinbidel ma 'format
ta 'sigħat, minuti, sekondi.

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U r-raġuni huwa kapital H hija din
huwa ser jagħti lili 24 darba siegħa, mhux 12

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żmien siegħa, li jkun h zghar.

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U jien biss ħażna li
fil-varjabbli imsejħa, ħin.

132
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Allura li t-tieni linja ta 'PHP
hemm, is-sejħa għall-funzjoni,

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data, huwa biss jkollna
xi spag, li hija

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ser jagħti me-data, u l-
ħin, u mazz ta 'informazzjoni oħra.

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U l-ewwel argument hemm, li TIEGĦU,
huwa biss estrazzjoni tal-parti importanti

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li I kura dwar għal dan eżempju,
li hija l-siegħa, minuta, u t-tieni.

137
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Allura dak l-kollu li għaddej.

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So I tinżamm din fi $ żmien varjabbli.

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U mbagħad stabbiliti fuq il-
ħafna qiegħ hemmhekk, I

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jkollu dik qosor għal
stampar ta 'l-ħin kurrenti.

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Hekk jien biss se jistampaw
barra dak il-ħin attwali hija.

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>> Mela ejja tagħti ħarsa lejn dan
IDE CS50 u tara kif aħna qed issa

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iffrankar li webmaster ħafna problemi.

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Kull dritt, so here I am darb'oħra
lura fil-direttorju għerq

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tal istanza Apache tiegħi.

146
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U għandi fajl hawn imsejjaħ time.php.

147
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Jien biss se ikklikkja fuq dik.

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U jien ser iscroll up, għaliex
aħna qed żżomjati fil pretty ħafna.

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Il-ħin attwali hija 14:20:34.

150
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Hekk jien tagħmel dan sigħat,
minuti, u sekondi.

151
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U nista 'jġedded il-
paġna u jiksbu żmien ġdid.

152
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--41.

153
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Jien ser jġedded il-paġna
u jiksbu żmien ġdid, 44, 46, 47.

154
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>> So, I am ċar ma
jinbidel xejn myself.

155
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Jien hawn iġjeniċi il-paġna.

156
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So I ma jistgħux jiġu lura hemm editjar.

157
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UI wegħda, I ma
xi Confederates

158
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li qed editjar-fajl
f'isem tiegħi fuq il-ġenb.

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>> Jien biss jużaw dik il-funzjoni PHP,
żmien, biex jiġġeneraw il-ħin għalija

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awtomatikament.

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Sabiex anke jekk jien rieqed,
u web server tiegħi qed taħdem,

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l-utent li żjarat dik il-paġna għadu
se tikseb eżattament l-ħin kurrenti.

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Allura dak pjuttost tajba.

164
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I ħadna sit tiegħi aktar dinamiku
bil-kodiċi PHP mhux wisq.

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Kien biss żewġ linji ta 'kodiċi u mbagħad
xi ftit ta 'dikjarazzjoni print.

166
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U diġà għandi
sit ħafna aktar dinamiku

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minn dak l-ewwel eżempju rajna
fil-bidu tal-video.

168
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>> Allura, jiġbor lura mingħand l-video fuq sintassi PHP
li meta l-interpretu PHP runs

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programm tagħna, tinjora kollox
li mhux ġewwa tal delimiters PHP,

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bżieq it out.

171
00:08:51,500 --> 00:08:54,410
F'dak eżempju, dak il-ħaġa
li kien bżieq out kien HTML.

172
00:08:54,410 --> 00:08:58,080
U dan ifisser nista 'issa
intersperse HTML u PHP flimkien.

173
00:08:58,080 --> 00:09:01,920
Minħabba li l-interpretu se biss
jinjora l-HTML u litteralment output dan.

174
00:09:01,920 --> 00:09:04,140
Li hija tajba, id-dritt?

175
00:09:04,140 --> 00:09:06,100
>> Minħabba preżumibbilment,
fl-aħħar tal-ġurnata,

176
00:09:06,100 --> 00:09:08,360
Nixtieq sit tiegħi għal
ikunu magħmula minn HTML.

177
00:09:08,360 --> 00:09:12,880
Sabiex kwalunkwe web browser tista jinterpretaw
dan, jew ma tifhimx il HTML fuq il-paġna

178
00:09:12,880 --> 00:09:17,270
u jagħmilha bħala xi ħaġa li aħna
jistgħu attwalment jifhmu bħala bnedmin.

179
00:09:17,270 --> 00:09:19,430
U nista 'nuża biss PHP
għall-partijiet ta 'sit tiegħi

180
00:09:19,430 --> 00:09:23,390
l jeħtieġu dinamiżmu, li jeħtieġu me
li jkollhom affarijiet li taġġorna kontinwament.

181
00:09:23,390 --> 00:09:26,630
L-informazzjoni statika
tista 'tissospendi l-istess.

182
00:09:26,630 --> 00:09:27,540
>> OK, hekk li l-multa.

183
00:09:27,540 --> 00:09:28,540
Iżda għaliex kieku nagħmel dan?

184
00:09:28,540 --> 00:09:30,400
Għaliex kieku I ħallat HTML u PHP?

185
00:09:30,400 --> 00:09:33,850
I jistgħu biss jistampa l-
HTML, tuża l-funzjoni print PHP.

186
00:09:33,850 --> 00:09:35,870
Why am I ma tagħmel dan?

187
00:09:35,870 --> 00:09:37,100
Aħseb dwar dan għat-tieni.

188
00:09:37,100 --> 00:09:41,220
>> Għaliex, meta I tista 'biss print out-- I
jista 'jkollhom linji ta' PHP li biss jgħidu,

189
00:09:41,220 --> 00:09:43,841
tag HTML print, print head.

190
00:09:43,841 --> 00:09:44,840
Why am I ma tagħmel dan?

191
00:09:44,840 --> 00:09:48,230
Why am I taħlit tal-PHP u HTML?

192
00:09:48,230 --> 00:09:50,080
>> Ukoll, jekk inti taħseb
dwar dan għat-tieni.

193
00:09:50,080 --> 00:09:52,824
PHP, l-interpretu għandu
li tinterpreta dak li jara.

194
00:09:52,824 --> 00:09:54,990
U hekk li għaddej biex ikollhom
biex tesegwixxi linja tal-kodiċi.

195
00:09:54,990 --> 00:09:56,450
Jistampa HTML.

196
00:09:56,450 --> 00:09:57,700
Jistampa tag ras miftuħ.

197
00:09:57,700 --> 00:09:58,969
Jistampa titolu tag miftuħ.

198
00:09:58,969 --> 00:10:00,760
Li għaddej biex ikollhom
jesegwixxu u jinterpretaw

199
00:10:00,760 --> 00:10:02,671
li kull pass wieħed tar-rotta.

200
00:10:02,671 --> 00:10:04,670
Għaliex ma just let l-
interpretu biss tleqqija fuq

201
00:10:04,670 --> 00:10:06,878
affarijiet ma tifhimx
u tagħmel dan awtomatikament?

202
00:10:06,878 --> 00:10:11,365
Huwa ser tiffranka me ħafna ħin
biex tħallat HTML tiegħi u PHP tiegħi flimkien.

203
00:10:11,365 --> 00:10:16,220
>> U hekk hu għalhekk aħna ma
sempliċiment għandek delimetru PHP miftuħa

204
00:10:16,220 --> 00:10:19,450
u mbagħad biss jistampa l-kollu
kontenut tal-paġna tagħna bħala PHP ġgant wieħed

205
00:10:19,450 --> 00:10:24,330
sejħa għall-funzjoni, Stampa, u mbagħad
delimetru PHP qrib u aħna qed isir.

206
00:10:24,330 --> 00:10:27,620
Allura huwa għalhekk li għandna ħallat flimkien.

207
00:10:27,620 --> 00:10:32,345
>> S'issa, ma rajniex wisq ta '
differenza minn sintassi PHP ġenerali.

208
00:10:32,345 --> 00:10:33,720
Huwa kien pjuttost sempliċi.

209
00:10:33,720 --> 00:10:35,553
Imxejna diġà raw il-
trade mark in kwistjoni, ugwali.

210
00:10:35,553 --> 00:10:39,012
Rajna ftit sejħiet funzjoni ġodda,
iżda xejn verament fancy għaddejjin.

211
00:10:39,012 --> 00:10:40,720
Ejja forsi tagħmel affarijiet
ftit fancier.

212
00:10:40,720 --> 00:10:44,360
X'jiġri jekk irridu li jgħaddu informazzjoni
bejn il-files PHP differenti,

213
00:10:44,360 --> 00:10:47,280
sabiex forsi l-utent jista '
jissottomettu informazzjoni lili.

214
00:10:47,280 --> 00:10:50,230
U allura I jistgħu jagħmlu xi ħaġa
magħha fuq paġna oħra.

215
00:10:50,230 --> 00:10:52,990
>> Allura PHP għandha l-appoġġ għall
xi ħaġa imsejħa Super Globali

216
00:10:52,990 --> 00:10:55,297
Varjabbli, li ħsejjes pjuttost tal-biża.

217
00:10:55,297 --> 00:10:57,130
Huma qed verament ftit
arrays assoċjattiva ġgant

218
00:10:57,130 --> 00:10:59,900
li jgħinu jimplimentaw din
funzjonalità tal tgħaddi

219
00:10:59,900 --> 00:11:05,010
informazzjoni bejn il-files PHP li
huma eżistenti fuq is-server web tagħna.

220
00:11:05,010 --> 00:11:07,760
>> L-ewwel minn dawn super
globals tissejjaħ $ _GET.

221
00:11:07,760 --> 00:11:10,140
U huwa probabbilment l-
sempliċi biex jifhmu.

222
00:11:10,140 --> 00:11:12,430
X'jiġri ma '$ _GET?

223
00:11:12,430 --> 00:11:16,240
Well, bażikament, l-utent huwa
ser tip ta 'informazzjoni addizzjonali

224
00:11:16,240 --> 00:11:18,390
fl-aħħar tal URLs tagħna.

225
00:11:18,390 --> 00:11:21,460
U tkun xi tkun dawn it-tip, jekk wieħed jassumi
huwa formattjati b'mod partikolari

226
00:11:21,460 --> 00:11:25,830
imsejħa string query, li huwa biss
sett ta 'pari b'valur ewlenin separati

227
00:11:25,830 --> 00:11:27,810
billi ampersands.

228
00:11:27,810 --> 00:11:32,362
Dawk pari b'valur ewlenin se jkunu
maħżuna $ _GET firxa assoċjattiva.

229
00:11:32,362 --> 00:11:34,070
U minn video tagħna fuq
Sintassi PHP, nafu

230
00:11:34,070 --> 00:11:40,080
kif taħdem ma '
arrays assoċjattiva diġà.

231
00:11:40,080 --> 00:11:44,090
Allura hawnhekk huwa eżempju ta '
xi PHP, fejn forsi jien

232
00:11:44,090 --> 00:11:50,180
estrazzjoni kollha tal-pari valur ewlenin
li l-utent fornut fil-URL.

233
00:11:50,180 --> 00:11:51,970
So I jkollhom delimiter tiegħi PHP Open.

234
00:11:51,970 --> 00:11:53,410
I jkollhom loop foreach.

235
00:11:53,410 --> 00:11:57,410
Jien mtennija madwar l-Super
Array Globali sejħet $ _GET.

236
00:11:57,410 --> 00:12:00,160
>> U nixtieq li tkun tista 'tirreferi
kemm iċ-ċavetta u l-valur.

237
00:12:00,160 --> 00:12:02,410
U jien biss tistamphom
out, kull wieħed fuq apparentement

238
00:12:02,410 --> 00:12:03,780
paragrafu tag tagħha stess hawn.

239
00:12:03,780 --> 00:12:07,620
Jien istampar xi HTML
u interpolanti l-valuri

240
00:12:07,620 --> 00:12:12,900
tal ċavetta u l-valur fis dik id-dikjarazzjoni.

241
00:12:12,900 --> 00:12:16,980
>> Mela ejja tagħti ħarsa lejn kif dan
se attwalment jaħdmu fuq IDE tagħna.

242
00:12:16,980 --> 00:12:18,980
U forsi dan se jgħin
juru ftit

243
00:12:18,980 --> 00:12:21,880
ta 'dak IKOLLOK huwa attwalment tagħmel.

244
00:12:21,880 --> 00:12:23,610
Hekk jien lura hawn fil għerq web tiegħi.

245
00:12:23,610 --> 00:12:25,318
U jien ser zoom fi
ftit biex turi li inti

246
00:12:25,318 --> 00:12:28,620
li għandi fajl imsejħa, get1.php.

247
00:12:28,620 --> 00:12:31,830
>> Mela ejja ikklikkja fuq get1.php.

248
00:12:31,830 --> 00:12:36,600
U jien ma tara ebda kontenut.

249
00:12:36,600 --> 00:12:38,390
Dak stramb, id-dritt?

250
00:12:38,390 --> 00:12:39,740
Well, mhux verament fil-fatt.

251
00:12:39,740 --> 00:12:42,030
Minħabba I ma pprovdiex
xejn fil-URL.

252
00:12:42,030 --> 00:12:46,270
Jien ser get1.php, imma I
ma pprovdietx ebda pari b'valur ewlenin

253
00:12:46,270 --> 00:12:47,450
bħala parti mill-sekwenza mistoqsija tiegħi.

254
00:12:47,450 --> 00:12:50,510
Mela ejja żid string query
u ara dak dan il-fajl jista 'jagħmel.

255
00:12:50,510 --> 00:12:53,040
>> Biex tibda string query inti
tip biss kwistjoni mark.

256
00:12:53,040 --> 00:13:00,820
Imbagħad forsi I ser ngħid isem = Doug &-sena = 2015.

257
00:13:00,820 --> 00:13:02,914
U mbagħad I se hit Ikteb.

258
00:13:02,914 --> 00:13:04,080
Issa avviż dak li qed jiġri.

259
00:13:04,080 --> 00:13:05,480
Jien xorta fil get1.php.

260
00:13:05,480 --> 00:13:08,445
Imma issa stajt fornuti
pari b'valur ewlenin, u jien

261
00:13:08,445 --> 00:13:14,940
tistamphom fuq tagħhom stess
isem paragraph--, sena Doug--, 2015.

262
00:13:14,940 --> 00:13:17,970
Li eżattament l-kodiċi aħna biss
raw fuq il-pjastra mument ilu.

263
00:13:17,970 --> 00:13:22,290
>> U jekk irrid li forsi żid ieħor
par ċwievet valur, & class = CS50.

264
00:13:22,290 --> 00:13:25,325

265
00:13:25,325 --> 00:13:27,580
Issa għandi valur ewlieni ieħor
par li l-stampata

266
00:13:27,580 --> 00:13:30,025
meta I tirrevedi il-URL ġdid.

267
00:13:30,025 --> 00:13:31,900
Issa forsi dan mhux
formattjati terriblement ukoll.

268
00:13:31,900 --> 00:13:33,660
So I jkollhom ieħor verżjoni tal get.php.

269
00:13:33,660 --> 00:13:36,350
Huwa get2.php.

270
00:13:36,350 --> 00:13:39,070
>> Id-differenza f'din
wieħed huwa għandi fajl CSS,

271
00:13:39,070 --> 00:13:41,690
u formati affarijiet
ftit aktar nicely għalija.

272
00:13:41,690 --> 00:13:43,940
Huwa forsi mhux l-aktar
CSS beautiful fid-dinja.

273
00:13:43,940 --> 00:13:45,650
Iżda huwa biss mod ieħor ta 'kif isir dan.

274
00:13:45,650 --> 00:13:52,840
So I xorta jistgħu jiksbu aċċess
għall-varjabbli tiegħi jużaw $ _GET.

275
00:13:52,840 --> 00:13:56,610
U f'dan il-każ, jien biss tip ta '
jagħmlu l-CSS ftit aktar fancy.

276
00:13:56,610 --> 00:13:58,360
U jekk aħna pop quddiem għall
IDE tiegħi għat-tieni,

277
00:13:58,360 --> 00:14:06,870
I ser nuruk fil-web PHP tiegħi
direttorju hawn, get2.php.

278
00:14:06,870 --> 00:14:10,010
Aħna ser tiftaħ it up, xi HTML hawn.

279
00:14:10,010 --> 00:14:13,220
Apparentement I am jgħaqqdu f'dak
Fajl CSS I kien jitkellem dwar.

280
00:14:13,220 --> 00:14:14,570
I tiftaħ tag tabella.

281
00:14:14,570 --> 00:14:15,970
U allura hawnhekk loop foreach tiegħi.

282
00:14:15,970 --> 00:14:18,450
>> Hawnhekk hija li, dak I
wera fuq il-pjastra qabel.

283
00:14:18,450 --> 00:14:21,007
L-unika differenza hija I
jkollhom dan ewlenin u CSS valur

284
00:14:21,007 --> 00:14:22,340
grafika li jien li tapplika għalih.

285
00:14:22,340 --> 00:14:25,622
Imma li kollox jien tagħmel, hija jien
mtennija madwar $ _GET li nikseb kollha

286
00:14:25,622 --> 00:14:26,580
tal-pari b'valur ewlenin.

287
00:14:26,580 --> 00:14:28,890
>> U jien tistamphom kif il-mejda.

288
00:14:28,890 --> 00:14:33,230
U, apparentement, jien ifformattjar l-imfietaħ
b'xi mod, bl-<td class = "ewlenin".

289
00:14:33,230 --> 00:14:40,057
Allura apparentement li tapplika għal xi
selettur klassi tiegħi GET.CSS fajl CSS.

290
00:14:40,057 --> 00:14:42,890
U, apparentement, jien istampar l
Valuri tiegħi b'mod totalment differenti.

291
00:14:42,890 --> 00:14:45,530
Li hija pjuttost
dak li rajna hawn, fejn

292
00:14:45,530 --> 00:14:47,710
valuri tagħna kienu stampati
bi sfond blu,

293
00:14:47,710 --> 00:14:49,969
u ċwievet tagħna kienu stampati
bi sfond isfar.

294
00:14:49,969 --> 00:14:52,010
Allura li kif jien jkollna
dawk stili differenti.

295
00:14:52,010 --> 00:14:54,054
Għaliex jien jużaw klassijiet differenti CSS.

296
00:14:54,054 --> 00:14:55,470
Imma dak li pretty ħafna minnha għal IKOLLOK.

297
00:14:55,470 --> 00:14:58,380
Bħal jien biss estrazzjoni ta 'informazzjoni.

298
00:14:58,380 --> 00:15:01,000
U f'dan il-każ, jien biss
istampar lill-iskrin.

299
00:15:01,000 --> 00:15:04,310
Jien jkollna out ta 'l-URL,
u dan huwa dak IKOLLOK ma għalina.

300
00:15:04,310 --> 00:15:06,470
>> Inti tara possibbli
problema hawn għalkemm?

301
00:15:06,470 --> 00:15:11,720
Għaliex kieku aħna forsi
ma tridx li jużaw $ _GET?

302
00:15:11,720 --> 00:15:15,440
X'jiġri jekk, forsi, I kienet qed tagħmel din il-mistoqsija?

303
00:15:15,440 --> 00:15:18,000
get3.php --to, li jiena
ma jkollhom fuq IDE tiegħi.

304
00:15:18,000 --> 00:15:19,640
Huwa biss fajl ipotetiku.

305
00:15:19,640 --> 00:15:22,187
Iżda avviż hawnhekk li apparentement
tgħaddi password tiegħi fil.

306
00:15:22,187 --> 00:15:23,770
U forsi password tiegħi huwa imbarazzanti.

307
00:15:23,770 --> 00:15:28,070
Jew forsi Ma rridx nies biex
jafu liema password tiegħi huwa, dritt.

308
00:15:28,070 --> 00:15:33,140
>> Jekk jien jgħaddiha though-- jekk jien jużaw
il-metodu $ _GET, dak li jiġri huwa,

309
00:15:33,140 --> 00:15:34,970
li għaddej biex tkun fil-URL.

310
00:15:34,970 --> 00:15:39,890
Allura xi utent malizzjużi jista
tkun tista 'tara dak li qed nagħmel.

311
00:15:39,890 --> 00:15:42,040
I tista 'tgħaddi minnhom
informazzjoni sensittiva.

312
00:15:42,040 --> 00:15:43,310
Jew forsi huwa lanqas utent malizzjużi.

313
00:15:43,310 --> 00:15:45,790
Forsi huwa biss ħabib tiegħek li
hija wieqfa fuq l-ispalla.

314
00:15:45,790 --> 00:15:47,650
U issa jkunu jafu l-password
għall-kont tiegħek Facebook.

315
00:15:47,650 --> 00:15:49,483
>> U forsi dawn mhux se
tagħmel xejn magħha.

316
00:15:49,483 --> 00:15:53,749
Imma jekk password tiegħek kienu
sottomessa permezz $ _GET għall Facebook,

317
00:15:53,749 --> 00:15:55,290
issa huma jafu password tiegħek Facebook.

318
00:15:55,290 --> 00:15:59,000
Għaliex dan huwa hemm dritt fil-URL
meta inti ghamilt sottomissjoni informazzjoni.

319
00:15:59,000 --> 00:16:01,887
>> U hekk forsi li mhux l-aħjar
mod biex jgħaddu informazzjoni sensittiva.

320
00:16:01,887 --> 00:16:04,470
Huwa mod tajjeb biex jgħaddu informazzjoni
li aħna ma partikolarment

321
00:16:04,470 --> 00:16:05,886
jimpurtahom bħala wisq sensittivi.

322
00:16:05,886 --> 00:16:09,347
Minħabba IKOLLOK huwa pretty fast,
relattiva għall-globals super oħra

323
00:16:09,347 --> 00:16:10,430
aħna qed tmur biex jitkellmu dwar.

324
00:16:10,430 --> 00:16:13,330
Imma forsi mhux l-aħjar għodda
għall-informazzjoni sensittiva.

325
00:16:13,330 --> 00:16:15,990
>> Għal li aħna tista 'tixtieq li
jużaw xi ħaġa imsejħa $ _POST,

326
00:16:15,990 --> 00:16:18,560
li huwa Varjabbli ieħor Super Globali.

327
00:16:18,560 --> 00:16:20,750
Huwa array assoċjattiva ieħor.

328
00:16:20,750 --> 00:16:23,240
Allura taħdem pjuttost ħafna
eżattament l-istess bħal IKOLLOK.

329
00:16:23,240 --> 00:16:26,850
Ħlief, minflok estrazzjoni
informazzjoni mill-URL,

330
00:16:26,850 --> 00:16:29,870
dan ma xi ħaġa permezz headers HTTP.

331
00:16:29,870 --> 00:16:32,080
Allura lura mit tagħna
video fuq HTTP, tkellimna

332
00:16:32,080 --> 00:16:34,850
dwar kif browsers, servers,
u l-klijenti jikkomunikaw.

333
00:16:34,850 --> 00:16:38,070
U l-informazzjoni tingħadda lura
u lura fil headers HTTP.

334
00:16:38,070 --> 00:16:43,330
>> Bil $ _POST, l-informazzjoni hija tipikament
mibgħuta permezz ta 'dawk headers HTTP.

335
00:16:43,330 --> 00:16:49,770
U aħna ser aktar komunement tara $ _POST fil
kuntest ta 'sottomissjoni forom HTML.

336
00:16:49,770 --> 00:16:52,390
Inti xorta tista 'tuża forom HTML
biex jissottomettu affarijiet li tikseb.

337
00:16:52,390 --> 00:16:56,120
Iżda dawn qed normalment użati
fil-kuntest ta 'POST.

338
00:16:56,120 --> 00:17:00,280
>> Allura hawnhekk eżempju ta 'forma HTML.

339
00:17:00,280 --> 00:17:06,750
Issa aħna stajt tidher dawn qabel, iżda aħna għandna
ma bbenefikawx din il-parti, l-azzjoni = "post.php".

340
00:17:06,750 --> 00:17:10,756
Allura meta aħna tkellem dwar forom jilħqu l-
kuntest ta HTML, I kellhom Submit buttuna.

341
00:17:10,756 --> 00:17:13,630
U jekk inti recall, I d ikklikkja Submit
u allura l-paġna biss aggornata,

342
00:17:13,630 --> 00:17:14,660
ma tagħmel xejn.

343
00:17:14,660 --> 00:17:18,250
>> F'dan il-każ, jien sottomissjoni
kwalunkwe I tip fil din il-formola,

344
00:17:18,250 --> 00:17:20,750
għall-fajl PHP imsejħa post.php.

345
00:17:20,750 --> 00:17:25,810
U, apparentement, il-mod li qed nagħmel dan
f'din il-forma qed tuża l-metodu POST.

346
00:17:25,810 --> 00:17:29,040
Allura kull biċċa informazzjoni
I tip fis din il-formola

347
00:17:29,040 --> 00:17:31,470
ser jiġu ppreżentati
permezz tal-headers HTTP.

348
00:17:31,470 --> 00:17:36,440
>> Se jkun aċċessibbli post.php,
għaliex dak l-azzjoni ta 'formola tiegħi.

349
00:17:36,440 --> 00:17:39,811
Se jkun aċċessibbli
billi jmorru $ _POST.

350
00:17:39,811 --> 00:17:42,310
U apparentement, il-mod I tista
jiksbu f'kull element individwali

351
00:17:42,310 --> 00:17:44,765
ma 'dak array assoċjattiva
hija ma dan l-attribut,

352
00:17:44,765 --> 00:17:48,130
l-Isem attribut ta 'tags input tagħna.

353
00:17:48,130 --> 00:17:53,540
>> So apparentement nista 'ngħid $ _POST kwadru
parentesi isem li tikseb xi utent

354
00:17:53,540 --> 00:17:55,440
ittajpjat fl-ewwel qasam.

355
00:17:55,440 --> 00:18:01,030
U $ _POST password, tal PW pjuttost,
li jiksbu fil x'ikun l-utent ittajpjat

356
00:18:01,030 --> 00:18:03,650
fit-tieni qasam.

357
00:18:03,650 --> 00:18:06,414
>> Mela ejja tagħti ħarsa lejn
dan fuq fil IDE CS50.

358
00:18:06,414 --> 00:18:08,330
Allura aħna qegħdin hawn, u jien ser
zoom fl għal tieni.

359
00:18:08,330 --> 00:18:12,380
U aħna jkollhom fajl imsejjaħ post.html.

360
00:18:12,380 --> 00:18:13,690
I ikklikkja fuq post.html.

361
00:18:13,690 --> 00:18:16,300
Fil-quċċata ħafna hawn I jkollhom
forma web sempliċi ħafna.

362
00:18:16,300 --> 00:18:18,750
Hu l-formola aħna biss raw
fuq il-pjastra tieni ilu.

363
00:18:18,750 --> 00:18:25,610
>> I tista tip, Doug, u nista '
tip password tiegħi, li aħna kollha

364
00:18:25,610 --> 00:18:27,340
jafu hu squadgoals.

365
00:18:27,340 --> 00:18:30,100
U jien se tolqot Submit.

366
00:18:30,100 --> 00:18:32,290
U apparentement, li
tissottometti lill post.php.

367
00:18:32,290 --> 00:18:33,810
U jien apparentement istampar dik.

368
00:18:33,810 --> 00:18:36,490
Hekk jien jwarrbu l-garanzija
li POST tagħti me bi ftit stampar ta

369
00:18:36,490 --> 00:18:37,720
il username u password.

370
00:18:37,720 --> 00:18:38,960
>> Isem l-utent huwa Doug.

371
00:18:38,960 --> 00:18:40,810
Password tal-utent hija squadgoals.

372
00:18:40,810 --> 00:18:42,480
Kif ma nagħmel dan?

373
00:18:42,480 --> 00:18:44,800
Well, pop quddiem għall IDE
għal darb'oħra għat-tieni.

374
00:18:44,800 --> 00:18:51,340
Aħna se iscroll biex jieħdu
ħarsa lejn post.php, li kienet

375
00:18:51,340 --> 00:18:54,040
l-azzjoni I li jintużaw biex jissottomettu hawn.

376
00:18:54,040 --> 00:18:55,739
Dan kien l-azzjoni tal-forma HTML tiegħi.

377
00:18:55,739 --> 00:18:56,780
U li kollox jien tagħmel.

378
00:18:56,780 --> 00:19:01,370
Isem l-utent huwa, u jien istampar
l-kontenut ta '$ _POST "isem".

379
00:19:01,370 --> 00:19:04,660
U mbagħad password tal-utent
huwa $ _POST "password".

380
00:19:04,660 --> 00:19:08,920
So I kien mogħti l-informazzjoni
billi jissottomettu l-formola HTML.

381
00:19:08,920 --> 00:19:13,790
U jien issa tista 'estratt billi tuża $ _POST
minħabba l-metodu I użati biex jittrasmettu

382
00:19:13,790 --> 00:19:17,470
data ma 'dik forma kien il-metodu POST.

383
00:19:17,470 --> 00:19:20,640
>> Issa huwa probabbilment mhux
so great-- jien ser

384
00:19:20,640 --> 00:19:24,510
li jmorru lura għat-tieni
li here-- sett tagħna

385
00:19:24,510 --> 00:19:30,120
huwa probabbilment mhux daqshekk kbir jekk I am
preżentazzjoni ta 'informazzjoni ma' POST,

386
00:19:30,120 --> 00:19:32,532
li hija apparentement aktar sigura.

387
00:19:32,532 --> 00:19:34,740
Huwa probabbilment mhux daqshekk kbir
jekk qed nagħmel dan u mbagħad

388
00:19:34,740 --> 00:19:36,470
stampar ta password tal-utent.

389
00:19:36,470 --> 00:19:38,540
Huwa suppost li jkunu aktar siguri.

390
00:19:38,540 --> 00:19:40,870
>> OK, iżda mhux kompletament sigura.

391
00:19:40,870 --> 00:19:42,910
U hekk f'dan il-ftit
snippet hawn Irrid

392
00:19:42,910 --> 00:19:46,410
għal ftit niġbidlek l-attenzjoni għal xi
preokkupazzjonijiet ta 'sigurtà tad-data, biss xi ħaġa

393
00:19:46,410 --> 00:19:51,200
biex jaħsbu dwar kif int
ħidma jew jużaw l-internet.

394
00:19:51,200 --> 00:19:53,890
Dan huwa biss xi ħaġa li jikkunsidraw.

395
00:19:53,890 --> 00:19:57,980
>> I qallek li l-informazzjoni hija
sottomessa permezz headers HTTP

396
00:19:57,980 --> 00:19:59,724
meta tuża l-metodu POST.

397
00:19:59,724 --> 00:20:01,390
Li jfisser li mhux qed kompletament sigura.

398
00:20:01,390 --> 00:20:05,610
Huma qed aktar diffiċli biex isibu minn
użu tal-metodu IKOLLOK, fejn

399
00:20:05,610 --> 00:20:06,882
huwa biss id-dritt fil-URL.

400
00:20:06,882 --> 00:20:08,340
Iżda għad hemm mod li jsibuha.

401
00:20:08,340 --> 00:20:10,423
U jien biss jixtiequ juru
inti dan sabiex inti forsi

402
00:20:10,423 --> 00:20:12,940
jibdew jaħsbu dwar dan
kif qed jaħdmu, jew bl-użu

403
00:20:12,940 --> 00:20:14,560
websajts u l-preżentazzjoni
passwords, u forsi bl-użu

404
00:20:14,560 --> 00:20:16,518
l-istess password fil-
ħafna postijiet differenti.

405
00:20:16,518 --> 00:20:22,060
Kun af li hija għadu attwalment pretty
faċli biex issir taf password xi ħadd.

406
00:20:22,060 --> 00:20:25,190
>> U hekk hawn, jien ser
biex tmur post2.html.

407
00:20:25,190 --> 00:20:28,850
U d-differenza ma post2.html
u post2.php hija pjuttost sottili.

408
00:20:28,850 --> 00:20:31,420
Id-differenza hija biss
li jien ma jistampa

409
00:20:31,420 --> 00:20:33,520
l-password meta I tissottometti l-formola.

410
00:20:33,520 --> 00:20:35,260
>> Hekk jien ser tip fil, Doug.

411
00:20:35,260 --> 00:20:38,365
U jien ser tip
fil, squadgoals, anke

412
00:20:38,365 --> 00:20:40,770
għalkemm nafu dak l-password.

413
00:20:40,770 --> 00:20:42,540
Qabel I jippreżenta l-
jiffurmaw għalkemm, jien ser

414
00:20:42,540 --> 00:20:45,864
biex jiftħu Developer Tools, just biex
nuruk dak li għaddej biex jiġri hawn.

415
00:20:45,864 --> 00:20:47,530
Allura fil Chrome, jien biss ser jintlaqtu F12.

416
00:20:47,530 --> 00:20:54,120

417
00:20:54,120 --> 00:20:57,230
U li għaddej biex tiftaħ tiegħi
Developer Tools fuq il-lemin.

418
00:20:57,230 --> 00:20:59,480
I ma ppreżentat il-formola s'issa.

419
00:20:59,480 --> 00:21:02,680
Issa jien ser jintlaqtu Issottometti fuq formola tiegħi.

420
00:21:02,680 --> 00:21:05,370
U apparentement, I għamel
sejħa biex, jew I għamel talba

421
00:21:05,370 --> 00:21:07,620
li post2.php, li jagħmel sens.

422
00:21:07,620 --> 00:21:10,040
Jien ser ikklikkja fuq dik.

423
00:21:10,040 --> 00:21:13,802
>> Imbagħad hawn fuq, jien ser
ikklikkja fuq headers.

424
00:21:13,802 --> 00:21:15,410
Hemm ħafna ta 'għalf jiġri hawn.

425
00:21:15,410 --> 00:21:21,310
Imma jekk jien iscroll isfel sa l-ħafna
qiegħ, avviż dritt there-- kalendarju tiegħi

426
00:21:21,310 --> 00:21:25,180
blukkat dan għal dritt second--
hemm fil-kantuniera qiegħ nett,

427
00:21:25,180 --> 00:21:27,386
name-- Doug, squadgoals pw--.

428
00:21:27,386 --> 00:21:30,010
Għalhekk anki jekk jien jużaw l POST
metodu, li hija aktar sikura,

429
00:21:30,010 --> 00:21:33,570
biss ikunu konxji li meta tagħmel hekk,
int xorta trasmessa informazzjoni

430
00:21:33,570 --> 00:21:34,430
permezz HTTP.

431
00:21:34,430 --> 00:21:36,770
U xorta tista 'tkun
misjuba minn avversarju.

432
00:21:36,770 --> 00:21:39,270
Huwa biss xi ħaġa aħna qed tmur
ikollhom jittrattaw mal verament.

433
00:21:39,270 --> 00:21:41,980
Forsi hemm xi modi biex kriptaġġ tagħna
passwords qabel we tibgħathom fuq,

434
00:21:41,980 --> 00:21:44,410
li tkun aħjar,
li jien ma nagħmilx hawn.

435
00:21:44,410 --> 00:21:47,010
>> Iżda biss ikunu konxji li l POST
Metodu għandha l-limitazzjonijiet wisq.

436
00:21:47,010 --> 00:21:49,801
Huwa ta 'titjib fuq IKOLLOK fil
sens li jkun immedjatament viżibbli.

437
00:21:49,801 --> 00:21:51,280
Imma din mhix tiffissa kompluta.

438
00:21:51,280 --> 00:21:53,280
Allura hawnhekk eżempju ta '
a quick fid eżerċizzju dar

439
00:21:53,280 --> 00:21:56,350
li tista 'tuża biex nikseb xi
prattika jaħdmu ma PHP.

440
00:21:56,350 --> 00:21:58,300
Oħloq il-par ta 'paġni tal-web li ġejja.

441
00:21:58,300 --> 00:22:00,960
L-ewwel għandu jkun biss sempliċi ħafna
jiffurmaw bi qasam wieħed u Issottometti

442
00:22:00,960 --> 00:22:01,460
buttuna.

443
00:22:01,460 --> 00:22:04,070
Allura simili ħafna għal dak li
biss għamlet ma 'post.html.

444
00:22:04,070 --> 00:22:07,450
>> U allura l-tieni
fajl għandek toħloq

445
00:22:07,450 --> 00:22:11,687
huwa fajl, fajl PHP, li
qed tistenna input, permezz POST,

446
00:22:11,687 --> 00:22:14,770
u bbażat fuq dak l-utent ittajpjat, li
inti tista 'tassumi ser tkun numru sħiħ.

447
00:22:14,770 --> 00:22:16,160
Inti ma għandekx tagħmel xi
verifika żball jew simili.

448
00:22:16,160 --> 00:22:18,284
Inti tista 'tassumi l-utent
se tip ta 'valur sħiħ,

449
00:22:18,284 --> 00:22:22,230
jew xi ħaġa bħal interpretat mill
PHP bħala numru sħiħ, din il-forma.

450
00:22:22,230 --> 00:22:24,790
Inti biss jixtiequ joħolqu
n billi tabella multiplikazzjoni n.

451
00:22:24,790 --> 00:22:28,480
>> Mela jekk l-utent jissottometti 10, irridu
jkollhom tabella 10 permezz 10 multiplikazzjoni.

452
00:22:28,480 --> 00:22:31,832
Jekk l-utent jissottometti 12, irridu
tabella 12 permezz 12 multiplikazzjoni.

453
00:22:31,832 --> 00:22:33,790
Just sabiex inti tista tara dak
aħna qed sewqan hawn,

454
00:22:33,790 --> 00:22:36,040
aħna ser tagħti ħarsa lejn
dan il-fajl fil IDE tiegħi.

455
00:22:36,040 --> 00:22:38,080
>> Allura hawn fil IDE, I jkollhom mult_form.html.

456
00:22:38,080 --> 00:22:41,370

457
00:22:41,370 --> 00:22:43,100
I ser ikklikkja dan.

458
00:22:43,100 --> 00:22:46,020
All I trid tagħmel hu li jippreżenta valur.

459
00:22:46,020 --> 00:22:47,590
Ittajpja 10, hit Submit.

460
00:22:47,590 --> 00:22:51,190
U apparentement, mult_table.php, li
nistgħu naraw fil-quċċata hemmhekk fil-URL,

461
00:22:51,190 --> 00:22:53,970
Jien ħolqien ta '10 b'10
tabella multiplikazzjoni.

462
00:22:53,970 --> 00:22:59,365
>> Jekk I tip 15 u hit Issottometti, issa I
jkollhom tabella 15 permezz 15 multiplikazzjoni.

463
00:22:59,365 --> 00:23:02,240
Jien, naturalment, mhux se juru
inti l-kontenut ta 'mult_table.php,

464
00:23:02,240 --> 00:23:04,781
minħabba li se jieħu l-gost
minn dan fid-eżerċizzju dar.

465
00:23:04,781 --> 00:23:07,480
Iżda huwa mod tajjeb ħafna biex nikseb xi
prattika li jaħdmu ma 'linji PHP

466
00:23:07,480 --> 00:23:10,889
u POST, sempliċi ħafna, wieħed jittama
eżempju stress ħielsa, biss

467
00:23:10,889 --> 00:23:12,180
li tagħmel ftit ta 'prattika.

468
00:23:12,180 --> 00:23:16,540
U stajt ltqajna CSS ftit għaddejjin
hawn biex tagħmel tabella individwali tiegħi

469
00:23:16,540 --> 00:23:19,710
ċelluli biss tip ta 'pop off
ftit u tfittex ftit aktar

470
00:23:19,710 --> 00:23:22,205
bħal tabella multiplikazzjoni,
għall-kuntrarju biss test biss

471
00:23:22,205 --> 00:23:23,261
tip ta 'seduta hemmhekk.

472
00:23:23,261 --> 00:23:26,260
L-aħħar super globali aħna ser nitkellmu dwar
f'dan il-video huwa xi ħaġa imsejħa

473
00:23:26,260 --> 00:23:27,597
$ _SESSION.

474
00:23:27,597 --> 00:23:29,930
U forsi dan huwa effettivament
l-aħjar eżempju ta 'xi ħaġa

475
00:23:29,930 --> 00:23:31,700
aħna se jikkunsidra globali.

476
00:23:31,700 --> 00:23:33,189
Huwa array ieħor.

477
00:23:33,189 --> 00:23:34,480
Huwa array assoċjattiva ieħor.

478
00:23:34,480 --> 00:23:40,580
Iżda huwa aċċessibbli permezz ta 'kull
Fajl PHP li teżisti fis-sistema tagħna.

479
00:23:40,580 --> 00:23:43,410
>> Aħna ma għandhom jippreżentaw
informazzjoni paġna waħda fi żmien

480
00:23:43,410 --> 00:23:45,400
bħal nagħmlu ma IKOLLOK u ma POST.

481
00:23:45,400 --> 00:23:46,380
Huwa dejjem hemm.

482
00:23:46,380 --> 00:23:50,040
U għalhekk dan huwa kbir għal paġna
fejn inti illoggjat, per eżempju,

483
00:23:50,040 --> 00:23:53,120
u trid informazzjoni login tiegħek
li jippersistu minn paġna għal paġna għal paġna.

484
00:23:53,120 --> 00:23:58,180
>> Tista 'biss tibda sessjoni u mbagħad
użu $ _SESSION biex jiffrankaw affarijiet simili

485
00:23:58,180 --> 00:24:02,320
isem l-utent, jew mar-utent
Informazzjoni ID, u l-bqija.

486
00:24:02,320 --> 00:24:07,600
U li l-informazzjoni se jibqgħu
$ _SESSION Sakemm int teqred is-sessjoni

487
00:24:07,600 --> 00:24:09,550
ftit aktar tard.

488
00:24:09,550 --> 00:24:12,375
>> Kitba websajts dinamika ma
PHP jagħmilhom ħafna aħjar.

489
00:24:12,375 --> 00:24:14,250
Siti tiegħek jsir ħafna
dinamika, u inti ma

490
00:24:14,250 --> 00:24:17,670
għandek tagħmel wisq aktar minn dak
inti kieku għamlu biss

491
00:24:17,670 --> 00:24:18,920
tagħmel dan ma HTML.

492
00:24:18,920 --> 00:24:21,630
Iżda teħtieġ li prattika,
ħafna ta 'prattika.

493
00:24:21,630 --> 00:24:26,897
>> Inti diġà taf kif taħdem ma 'C,
u għalhekk jaqbeż lil PHP mhix wisq delikata.

494
00:24:26,897 --> 00:24:28,730
X'inhu forsi ftit
bit delikata qed taħdem

495
00:24:28,730 --> 00:24:33,180
ma din l-idea ġdida ta 'GET u POST,
u forsi taħlit HTML tiegħek u PHP tiegħek

496
00:24:33,180 --> 00:24:34,220
flimkien.

497
00:24:34,220 --> 00:24:37,570
Iżda wkoll ikunu konxji li l-internet
hija repożitorju kbir ta 'informazzjoni.

498
00:24:37,570 --> 00:24:41,670
U d-dokumentazzjoni PHP hija disponibbli
f'ħafna postijiet, imma forsi l-aktar

499
00:24:41,670 --> 00:24:43,354
kanonikament fil php.net.

500
00:24:43,354 --> 00:24:45,520
U inti tista 'ssib hemmhekk,
lottijiet ta 'funzjonijiet differenti,

501
00:24:45,520 --> 00:24:48,330
u każijiet ta 'użu, u eżempji
fuq eżempji, fuq eżempji.

502
00:24:48,330 --> 00:24:51,340
Fejn jekk inti tixtieq li jippruvaw u figura
kif tagħmel xi ħaġa, odds huma,

503
00:24:51,340 --> 00:24:52,964
xi ħadd probabbilment sar qabel int.

504
00:24:52,964 --> 00:24:55,840
U inti tista 'tużahom bħala
ispirazzjoni biex jiġu implimentati x'ikun

505
00:24:55,840 --> 00:24:58,230
huwa inti qed tipprova timplimenta wisq.

506
00:24:58,230 --> 00:24:59,230
>> Jien Doug Lloyd.

507
00:24:59,230 --> 00:25:01,210
Dan huwa CS50.

508
00:25:01,210 --> 00:25:02,608