3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 1;function printA() {global $a;print $a;}printA(); // 1function printAFailed() {print $a;}printAFailed(); // undefined
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.2.0
1
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/4LcSR on line 3
Process exited with code 255.