3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function x($a, &$b, &$c = 3) { $c++; echo $a, $b, $c; } $z = 2; $y = null; x(1, $z, $y); x(1, $z, $y); x(1, $z, $y); x(1, $z, $y);
based on 8JlFA
Output for 5.0.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
121122123124
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '=', expecting ')' in /in/huPpg on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '=', expecting ')' in /in/huPpg on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/huPpg on line 2
Process exited with code 255.