3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class Foo { abstract public function __construct($a); } class Bar extends Foo { public function __construct() {} } $b = new Bar;
Output for 5.4.0 - 5.4.41, 5.5.24 - 5.5.25, 5.6.8 - 5.6.9
Fatal error: Declaration of Bar::__construct() must be compatible with Foo::__construct($a) in /in/LX0s9 on line 11
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/LX0s9 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_CLASS in /in/LX0s9 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/LX0s9 on line 3
Process exited with code 255.
preferences:
220.12 ms | 1394 KiB | 135 Q