Kwamfutocin, Shirye-shirye
A for madauki a PHP
Daya daga cikin manyan ayyuka na kwakwalwa ne da aiki da yawa a cikin mutane data wannan aiki zai bukatar wani sosai babban zuba jari na lokaci. Don yin hadaddun machining hawan keke da aka ƙirƙira. Ka yi la'akari da sake zagayowar for. Wani lokaci, wajibi ne a maimaita wasu daga cikin guda na code wani yawan sau, shi ke lokacin da hawan keke zo da ceto. A for madauki - daya daga cikin rare.
Kamfanonin, wanda sukan yi amfani da a sake zagayowar don
Da farko, bari mu dubi wani rukuni na aiki sukan yi amfani da hawan keke. Suna da ake kira da increment da decrement. increment sadarwarka rubuce biyu pluses (++), shi daukawa fitar da wata karuwa da daya. Decrement akasin haka, rage-rage darajar 1, shi nuna a fakaice biyu minuses (-). Wadannan aiki suna amfani da wani counter. Idan a lokacin da pre-decrement / increment ne wani karu / karuwa a cikin m, sa'an nan wannan darajar da ake amfani. A POST-decrement / increment da m aka farko amfani, sa'an nan daga baya akwai ta karuwa ko raguwa.
ginin kalma
A for madauki samar da wani umurnin kisa block dai a wasu yanayin gaskiya ne. A wasu kalmomin, wani sa na dokokin, wanda aka yi ta maimaitawa har sai wani kayyade yanayin da aka kashe.
An yi imani da cewa zagayowar ga daya daga cikin hadaddun a PHP. Its ginin kalma ne kamar haka:
domin (chast_1. chast_2. chast_3)
{Code}
Musamman ban sha'awa shi ne gaskiya cewa a cikin baka biyu. Kamar yadda ka gani, akwai sassa uku. Sun rabu da wani semicolon. Ina chast_1 PHP aikata abin da ya ke gaya. Idan akwai wani magana, to, shi ne hukuncin kisa. Matsayin mai mulkin, akwai aka kunna kanta. A chasti_2 shi ne idan, sa'an nan a duba ko da gaske ne cewa a chasti_1 idan a (gaskiya), sa'an nan PHP executes code cewa shi ne a ciki da Katakon. Sulusin ne da karuwa ko rage daga cikin counter.
La'akari da sake zagayowar for php a Example
aiki
Gudu karamin aiki. Akwai wasu da shawara: "Hi, goyon baya!" Wajibi ne a tsaye janye wannan magana. Yadda aka yi shi?
Muna da bukatar a warware matsalar PHP madauki for. Mun tuna da aikin strlen (), wanda ya koma da tsawon da line.
Idan layi ne a tsaye, yi amfani da wasu zaɓuɓɓuka.
A karo na biyu embodiment, duk kiyaye a cikin wani madauki for.
Tare da taimakon wani for madauki a PHP, za ka iya magance da dama wasanin gwada ilimi!
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