Uhlu lwe-PHP lusebenza kanjani?

Uhlu luyisakhiwo sedatha esikuvumela ukuthi ugcine amanani athile endaweni eyodwa efana nhlobo.

Izinhlobo Ezihlelekile

Kunezinhlobo ezimbili zezinhlaka, zihlukile endleleni yokukhomba izakhi ezikhona.

1. Okulula - kuyo yonke into ngayinye inikelwa yinkomba kokulandelana okuthile.
2. I-Associative - isebenzisa izihluthulelo ezihlotshaniswa ngokwanele namagugu ukufinyelela isici.

Ngokwemigomo elula, kuyinto eguquguqukayo lapho kungaba khona okungaphezu kweyodwa. Sinesithakazelo kumalungu we-PHP.

Izici zobunjwa

Cabanga ngemininingwane ye-PHP ngokuningiliziwe:

1. Ingaqukatha noma yiliphi inani lamanani, futhi lingabi nalutho.
2. Ngayinye yezindinganiso eziqukethe uhla lwe-PHP kuthiwa yi-element.
3. Isici sigcina izinhlobo ezahlukene zeziguquko. Lezi zingaba izintambo, izinombolo, amanani anengqondo.
4. Ukufinyelela kwezakhi kungenzeka ngosizo lwezinkomba, okubili kokubili izintambo nezinombolo.
5. I-PHP iqukethe izinto ezinezinkomba ezihlukile.
6. Inombolo yezinto ezisendleleni ubude bayo.
7. Izindinganiso zezingxenye zingabuye zibe yizinhlaka, ngakho-ke izigaba ezihlukahlukene zenzelwe.

Isici esiyingqayizivele se-PHP yikhono lokudala uhlu lwaluphi uhlobo oluyinkimbinkimbi kusikripthi.

Amapulangwe:

1. Akunzima ukusebenza ngesikhathi esisodwa ngezindinganiso eziningi zamanani. Kulula ukukhipha izakhi zalo ngokushintsha amanani.
2. Kulula ukuyisebenzisa. Vele ususe, wengeze izinto, ufunde noma ushintshe amanani ezakhi.
3. Ku-PHP, kunemisebenzi eminingi ehlukene evumela ukuthi ukwazi ukusingatha izigaba. Kukhona usesho lwamanani athile, ukuhlunga, ukuhlanganisa ama-arrays.

Izinhlobo

I-Arrays ihlukaniswe yaba izinhlobo ezimbili:

• I-one-dimensional;
• I-two-dimensional.

Kunezindlela ezihlukahlukene zokuqala izigcawu. Okokuqala, cabanga ngokulula, bese uhlanganisa i-PHP.

Isibonelo sokudala uhlu olulula ku-PHP:

Esikhathini, izihluthulelo ziyizinombolo kubakaki [], futhi amanani amagama amagama izithelo nemifino.

Ukubeka ukubaluleka kwisici se-PHP kungabhalwa kanje:

• I-Array [n] = z;
• N iyisihluthulelo, i-value.

Ngendlela yesibili yokuqalisa, awukwazi ukucacisa noma yini kubakaki abesikwele :

• $ Name [] = "eyodwa";
• $ Name [] = "ezimbili";
• $ Name [] = "ezintathu".

Kulesi simo, ama-indices azolingana no-0, 1 no-2 ngokuzenzakalelayo.

Futhi ungabela noma yimaphi amanani akho kuma-index:

• $ Name [35] = "eyodwa";
• $ Igama [18] = "ezimbili";
• $ Name [90] = "ezintathu".

Ungahlanganisa izindlela zokuqala:

• $ Name [37] = "kuqala";
• Igama le-$ [5] = "yesibili";
• $ Name [] = "yesithathu".

Into yesithathu izonikezwa inkomba elingana no-38, kusukela ku-37 yiyona enkulu kunazo zonke.

I-syntax ye-multidimensional array ibukeka kanje:

$ Name [index1] [index2] ....

Manje ake sibone ukuthi i-PHP yohlu lokuhlangana luni. Inkomba ingaba yintambo, ayivinjelwe, izikhala zivunyelwe, ubude bayo buhlukile. Ama-arrays amahle afanele ukusebenzisa uma udinga ukuhlanganisa izinto ezingenayo izinombolo, kodwa ngamazwi. Ama-arrays anezinhlayiya ezinamakholi abizwa ngokuthi ama-associative.

I-one-dimensional associative arrays iqukethe ukhiye owodwa kuphela, ihambelana nenkomba ethize. Isibonelo esingenhla sikhombisa isibonelo sezingxenye ezihlanganisiwe zomuntu oyedwa nesezinhlobo eziningi.

Ungakha uhlu oluhlangene lokudidiyela ngendlela ejwayelekile, kodwa lokhu akusizi kahle kakhulu.