Ukhusela njani ixesha lokubaleka ngaphandle kwekhowudi echaziweyo kwi-PHP

2021-01-12 PHP

Isalathiso

Umqhubi wolawulo lwempazamo

Sebenzisa @ ukuvimba iimpazamo

I-PHP ixhasa umsebenzisi wolawulo lwempazamo: @. Xa ibekwe phambi kwengcaciso ye-PHP, nayiphi na imiyalezo yempazamo enokuveliswa yile ntetho ayizukuhoywa. Ukuba umsebenzi wokuphatha impazamo ngokwesiko usetelwe nge-set_error_handler (), isaza kubizwa. Jonga ikhowudi yesampulu engezantsi ukuze isetyenziswe.

            $my_file = @file ('non_existent_file');
$value = @$cache[$key];

Ukulumkela

Lo mqhubi usebenza kuphela kwiinkcazo. Umgaqo olula wee novices yile: ukuba ungafumana ixabiso kwindawo ethile, ungongeza @ umqhubi phambi kwayo. Umzekelo, unokuyibeka phambi kwezinto eziguquguqukayo, imisebenzi kwaye ubandakanye iminxeba, imingcelele, njl. Ayinakubekwa phambi kwenkcazo yomsebenzi okanye iklasi, kwaye ayinakusetyenziswa kulwakhiwo olunemiqathango olunjengokuba if and foreach.