3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo($a, $b, $unused, $unused) { } foo( 2, 'hello' , 'world' , 'tata' );
based on vA0uG
Output for 7.0.0
Fatal error: Redefinition of parameter $unused in /in/mOo9b on line 2
Process exited with code 255.
Output for 5.3.20 - 5.6.28