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Video: PHP array muaj nuj nqi yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
PHP | array () Muaj nuj nqi
Cov array () muaj nuj nqi yog inbuilt muaj nuj nqi hauv PHP uas yog siv los tsim ib qho array . Associative array : Cov array uas muaj npe raws li cov yuam sij. Syntax: array (key=>val, key=>val, key=>value,) Multidimensional array : Cov array uas muaj ib lossis ntau dua arrays.
Hauv qhov no, PHP array 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.
Tom qab ntawd, lo lus nug yog, PHP functions yog dab tsi? PHP ua haujlwm zoo ib yam li lwm yam lus programming. A muaj nuj nqi yog ib daim code uas yuav siv ib qho ntxiv input nyob rau hauv daim ntawv ntawm parameter thiab ua ib co ua thiab xa ib tug nqi. Lawv yog built-in muaj nuj nqi tab sis PHP muab kev xaiv los tsim koj tus kheej muaj nuj nqi ib yam nkaus.
Ua li no, qhov kev ua haujlwm ntawm array yog dab tsi?
PHP Array Functions
| Muaj nuj nqi | Kev piav qhia |
|---|---|
| suav() | Rov qab cov naj npawb ntawm cov khoom hauv ib qho array |
| tam sim no () | Rov qab cov khoom tam sim no hauv ib qho array |
| txhua tus () | Deprecated los ntawm PHP 7.2. Rov qab tus yuam sij tam sim no thiab tus nqi khub ntawm ib qho array |
| kawg () | Teem lub pointer sab hauv ntawm ib qho array rau nws cov khoom kawg |
Dab tsi yog hom array hauv PHP?
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.
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