3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function blop (&$a = null) { $a = 'bla'; } blop(); $b = null; blop($b); var_dump($b);
Output for 5.0.0 - 7.1.0
string(3) "bla"
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '=', expecting ')' in /in/MmKqV on line 3
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/MmKqV on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/MmKqV on line 3
Process exited with code 255.