3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php abstract class Foo { function bar($mKey = NULL){ return $mKey; } } class Bar extends Foo { } $bar = new Bar(); echo $bar->bar();
Output for 5.0.0 - 7.1.0
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/Nr9jq 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 T_CLASS in /in/Nr9jq on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Nr9jq on line 3
Process exited with code 255.