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@ 2017-07-03T20:35:33Z

<?php
error_reporting(-1);

function test()
{
    global $x;
    if($x==='test') var_dump($x);
}

test();

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
error_reporting: documentation ( source)

preferences:dark modelive preview

37.64 ms | 402 KiB | 5 Q