Kodi Php zosiyanasiyana?

Aŵa ndi dongosolo deta kuti amalola malo limodzi kusunga mfundo zina zinthu za mtundu womwewo.

mitundu lomenyera

Pali mitundu iwiri ya magulu, iwo amasiyana pa njira ya chizindikiritso cha zinthu constituent.

1. Zambiri - lililonse mchitidwe m'menemo umapatsidwa index mu ndondomeko wake.
2. Associative - iwo ali amatanthauza chinthu ntchito makiyi kugwirizana ndi mfundo za zomveka.

Mawu osavuta, ndi variable, zimenezi mtengo kuposa wina. Tili ndi chidwi chofuna Php zosiyanasiyana.

mbali khalidwe

Taganizirani Php mfundo zosiyanasiyana:

1. Zimakhala ali chiwerengero cha makhalidwe, ndipo kulibe kanthu.
2. Aliyense wa makhalidwe, amene limapangidwa osiyanasiyana Php, wotchedwa amafotokozera.
3. Mchitidwe zimasunga osiyanasiyana zosintha. Awa akhoza kukhala zingwe, integers, booleans.
4. Kupeza zinthu n'zotheka ntchito zolozera amene ali lowercase ndi M'ndandanda.
5. Php lomenyera lili zinthu ndi zolozera wapadera.
6. chiwerengero cha zinthu mwa dongosolo lomenyera ndi - ndi kutalika kwake.
7. Mfundo mbali angathe kukhala magulu, monga magulu Mipikisano ooneka enieni.

Chinthu chapadera cha Php ndi mphamvu kulenga osiyanasiyana mu script cha kapangidwe iliyonse.

ubwino:

1. N'zosavuta ntchito imodzi ndi makhalidwe angapo mwa dongosolo lomenyera ndi. N'zosavuta kuchita mkombero pa anthu ake kusintha makhalidwe a.
2. Ndi wosavuta kusintha. Mwachidule kuchotsa, kuwonjezera zinthu kuwerenga kapena kusintha mfundo za nyengo.
3. Mu Php, pali ntchito zosiyanasiyana kuti amakulolani kusamalira magulu. Pali zotsatira za mfundo zenizeni, kusanja, merging magulu.

mitundu

Magulu zidzasankhidwa zambiri mitundu 2:

• limodzi azithunzi omwe tikunena;
• ziwiri ooneka enieni.

Pali njira zosiyanasiyana initialize zosiyanasiyana. Choyamba, tiyeni tikambirane yosavuta, ndiyeno - ndi associative lomenyera Php.

CHITSANZO kulenga khamu la kumodzi Php:

Mu makiyi Mwachitsanzo ntchito - nambala mwapadera [], ndipo chofunika kwambiri - dzina zipatso ndi ndiwo zamasamba.

Potumiza ndi Php lomenyera amafotokozera mfundo akhoza kulembedwa monga:

• $ Zungulirani [N] = z;
• N - kiyi z - phindu.

Mu njira yachiwiri initialization akhoza kukhala chilichonse chosonyeza mu m'mabokosi :

• $ Dzina [] = "munthu";
• $ Dzina [] = "ziwiri";
• $ Dzina [] = "atatu".

Mu nkhani iyi, index adzakhala wofanana ndi kusakhulupirika kwa: 0 1 ndi 2.

Ndipo inu mukhoza perekani aliyense kufunika kwake index:

• $ Dzina [35] = 'ndi';
• $ Dzina [18] = 'ziwiri;
• $ Dzina [90] = "atatu".

Mukhoza kuphatikiza njira initialization:

• $ Dzina [37] = "woyamba";
• $ Dzina [5] = "wachiwiri";
• Dzina $ [] = "chachitatu".

The mbali yachitatu amagwira ntchito ndi index wofanana 38, monga 37 - waukulu wa zolozera lapansi.

Multidimensional lomenyera malembedwe zikuwoneka ngati izi:

Dzina $ [indeks1] [indeks2] ....

Tsopano tiyeni tiwone chimene Php associative zosiyanasiyana. The index kungakhale chingwe, zilibe amalowerera ufulu mipata saloledwa, m'litali ndi osiyana. magulu Associative bwino ntchito pamene kuli kofunikira yolumikizana zinthu sizikhala ndi manambala, koma ndi mawu. Magulu amene ali zolozera - zingwe amatchedwa associative.

Mu magulu limodzi azithunzi omwe tikunena associative uli njira ina, izo limafanana ndi index yeniyeni. The chithunzi pamwamba ndi chitsanzo cha munthu azithunzi omwe tikunena ndi Mipikisano ooneka enieni magulu associative.

Inu mukhoza kulenga multidimensional associative zosiyanasiyana mu njira yapamwamba, koma si yabwino kwambiri.