3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = function($_, $_, $_) { var_dump($_); return true; }; $a(1,2,3);
based on qjjkO
Output for 7.0.0 - 7.0.3
Fatal error: Redefinition of parameter $_ in /in/m1vgl on line 3
Process exited with code 255.
Output for 5.3.22 - 5.6.28
int(3)