3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function mutate(&$x) { $x = 'bar'; } $var = 'foo'; mutate($var); echo $var; // bar
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.1.0
bar
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/qsPCF on line 10
Process exited with code 255.