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@ 2014-07-05T22:25:41Z

<?php
$n=0;
echo $n;
$n+=10;
echo $n;
$n+=10;
echo $n;
$x = 0; 
if(!function_exists('pCount')){
        function pCount(){
            global $x;
            if($x>5){
                sleep(1);
                pCount();
            }else{
                $x++;
                return;
            }
        }
    }

echo $x;
    pCount();
echo $x;

Output
Performance
VLD
References
Branches

function_exists: documentation ( source)
sleep: documentation ( source)

preferences:dark modelive preview

55.57 ms | 402 KiB | 5 Q