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>> DAVID Malan: Hebu kuboresha kozi
Mzee kidogo zaidi kwa

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generalizing kazi hizo,
renderHeader na renderFooter, katika,

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kabisa tu, atatoa kwa sababu baada ya yote,
wao walikuwa karibu kufanana isipokuwa

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kwa majina yao.

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Jinsi ya kufanya hivyo?

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Vizuri atop faili hili tu, chini ambapo
tunahitaji helpers.php, hebu simu

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kazi mpya, atatoa, ambao kwanza
hoja, hebu kusema kuwa jina lake,

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ya template, file hiyo maana
kwa kuwa plugged huko.

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Wakati huo huo, hoja ya pili atakuwa
kubaki safu associative, katika hii

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Uchunguzi safu zenye muhimu kwa ajili ya
jina lake thamani ni hapa CS50.

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Hebu sasa tuangalie helpers.php.

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>> Katika helpers.php, sisi sasa, ya
Bila shaka, na moja tu

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kazi inavyoelezwa, atatoa.

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kutoa inachukua sasa hoja mbili, ambayo
Tutamwita template na data,

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mwisho ambaye default thamani
ni bado safu tupu.

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Lakini katika hili toleo la kutoa notisi
kwamba Mimi sasa kutangaza variable ndani

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aitwaye njia na hawawajui thamani ya
template, ambayo, kwa mfano, huenda

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kuwa quote, unquote, "header" na
append kwa kuwa kamba. php.

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Kwa maneno mengine, hebu kudhani kwa sasa
kwamba kama template yetu inaitwa header,

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basi template utatekelezwa
katika faili iitwayo, rahisi kabisa,

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header.php.

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>> Wakati huo huo, hebu kufanya
haraka sanity kuangalia.

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Kama njia hiyo ipo, ambayo tunaweza
kuangalia kwa njia ya faili inayoitwa

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file_exists, basi hebu kutafuta
associative safu kuitwa data ili

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sisi na moja au zaidi vigezo ndani
katika upeo, na kisha hebu

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zinahitaji njia hiyo.

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Wakati huo huo, helpers.php inaonekana kabisa
tu kama hii, hasa kama kabla ya.

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>> Lakini kama sisi sasa kuangalia nyuma katika index.php,
taarifa kwamba chini ya kwamba

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file, tunaweza vile vile kuwaita
atatoa, kupita katika kama yake

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pekee hoja footer.

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Katika kesi hiyo, hatuna haja ya kupita katika
safu associative kwa sababu

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footer template, kukumbuka, ni tu hii.

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Lakini sasa tuna arguably hata
safi kubuni kwa sababu tumekuwa

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kuondolewa baadhi ya vinginevyo wetu
redundant kanuni na ziko kwenye

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kazi moja tu, atatoa.

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