Video: Dab tsi yog qhov hloov pauv ib puag ncig hauv PHP?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ib puag ncig hloov pauv txhais
PHP ib puag ncig hloov pauv tso cai rau koj cov ntawv sau cia qee yam ntawm cov ntaub ntawv dynamically ntawm lub server. Qhov no txhawb cov ntawv hloov tau yooj yim hauv lub server uas muaj peev xwm hloov pauv ib puag ncig
Yog li ntawd, dab tsi yog $ _ ENV hauv PHP?
$_ENV yog ib qho superglobal uas muaj ib puag ncig hloov pauv. Environment variables yog muab los ntawm lub plhaub nyob rau hauv uas PHP yog khiav, yog li lawv yuav txawv raws li cov plhaub sib txawv.
Ib tug kuj nug, dab tsi yog. ENV cov ntaub ntawv hauv PHP? Yog koj paub PHP lub moj khaum zoo li Laravel thiab Symphony, koj yuav tsum paub txog lawv. env file . Nws yog qhov chaw koj teeb tsa tag nrho koj qhov kev sib txawv hauv zos xws li los ntawm cov ntaub ntawv pov thawj rau cov ntawv pov thawj xa ntawv thiab txhua yam koj xav tias yuav tsum tau peculiar rau ib puag ncig (Local/Development, Staging and Production).
Ib tug kuj yuav nug, dab tsi yog qhov kev siv ntawm ib puag ncig hloov pauv?
Ib ib puag ncig hloov pauv yog ib qho dynamic "khoom" ntawm lub computer, uas muaj tus nqi kho tau, uas yuav siv tau los ntawm ib lossis ntau qhov software hauv Windows. Environment variables pab cov kev pab cuam paub cov npe dab tsi rau nruab cov ntaub ntawv nyob rau hauv, qhov twg yuav khaws cov ntaub ntawv ib ntus, thiab qhov twg yuav nrhiav tau tus neeg siv profile chaw.
Getenv yog dab tsi?
Cov getenv ua () muaj nuj nqi tshawb xyuas cov npe ib puag ncig kom pom lub npe hloov pauv ib puag ncig, thiab xa rov qab tus taw tes rau tus nqi sib thooj. GNU-specific secure_getenv() muaj nuj nqi zoo ib yam li getenv ua () tshwj tsis yog tias nws rov NULL nyob rau hauv cov ntaub ntawv uas yuav tsum tau "kev ruaj ntseg execution".
Pom zoo:
Dab tsi yog qhov hloov pauv ib puag ncig hauv Windows 10?
Ib qho kev hloov pauv ib puag ncig yog dynamic 'khoom' onacomputer, muaj tus nqi kho tau, uas tuaj yeem siv los ntawm ib tus lossis ntau qhov software hauv Windows. Environmentvariableshelp cov kev pab cuam paub cov npe dab tsi rau nruab cov ntaub ntawv nyob rau hauv, qhov twg khaws cov ntaub ntawv ib ntus, thiab qhov twg mus nrhiav userprofilesettings
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