3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x=0; if(!function_exists('pCount')){ function pCount(){ global $x; if($x>5){ sleep(1); pCount(); }else{ $x++; return; } } } echo $x."<br>"; pCount(); echo $x."<br>"; $x--; echo $x."<br>"; pCount(); echo $x."<br>";
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
0<br>1<br>0<br>1<br>