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Video: Dab tsi yog hom array hauv PHP?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Hom Arrays hauv PHP
Cov no yog: Indexed array - Ib array nrog tus yuam sij tus lej. Associative array - Ib array qhov twg txhua tus yuam sij muaj nws tus nqi tshwj xeeb. Multidimensional array - Ib array muaj ib lossis ntau dua arrays hauv nws tus kheej.
Ib yam li ntawd, ntau hom arrays hauv PHP yog dab tsi?
Hauv PHP, muaj peb hom arrays:
- Indexed arrays - Arrays nrog tus lej ntsuas.
- Associative arrays - Arrays nrog lub npe yuam sij.
- Multidimensional arrays - Arrays uas muaj ib lossis ntau qhov arrays.
arrays hauv PHP yog dab tsi? PHP - Arrays . Kev tshaj tawm. Ib array yog cov qauv ntaub ntawv uas khaws ib lossis ntau yam zoo sib xws ntawm cov nqi hauv ib tus nqi. Piv txwv li yog tias koj xav khaws 100 tus lej ces tsis txhob txhais 100 qhov sib txawv nws yooj yim los txhais ib qho array ntawm 100 length.
Tsis tas li ntawd, dab tsi yog qhov txawv ntawm arrays hauv PHP piav qhia nrog piv txwv los ua cov arrays hauv PHP?
Hom PHP Arrays:
- Indexed Array: Arrays nrog cov lej ua ntu zus, xws li 0, 1, 2 thiab lwm yam. Piv txwv:
- Associative Array: Qhov no yog hom feem ntau siv PHP Arrays uas nws cov ntsiab lus tau txhais nyob rau hauv qhov tseem ceeb / tus nqi khub. Piv txwv:
- Multidimensional Array: Arrays uas nws cov ntsiab lus yuav muaj ib lossis ntau arrays.
Dab tsi yog array thiab nws hom?
Ib array yog ib qho kev sau los ntawm ib lossis ntau qhov tseem ceeb ntawm tib yam hom . Txhua tus nqi yog hu ua ib feem ntawm cov array . Cov ntsiab lus ntawm cov array qhia tib lub npe sib txawv tab sis txhua yam muaj nws tus kheej tus lej cim tshwj xeeb (tseem hu ua subscript). Ib array tuaj yeem yog ib qho hom , Piv txwv li: int, ntab, char thiab lwm yam.
Pom zoo:
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