<?php
function isSetTest($value){
global $$value;
if ( !isset($$value)){
$$value = NULL;
}
return $$value;
}
//Undefined variable here
var_dump('name' . isSetTest("value") . "\n");
//Defined variable here
$ImDefined = "YES";
var_dump('name' . isSetTest("ImDefined") . "\n");
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
- string(5) "name
"
string(8) "nameYES
"
preferences:
197.79 ms | 406 KiB | 350 Q