3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php abstract class A { abstract function M(A $a); } class C extends A { function M(C $a){} }
based on biioH
Output for 5.4.0 - 5.4.32
Fatal error: Declaration of C::M() must be compatible with A::M(A $a) in /in/3fsMh on line 3
Process exited with code 255.
Output for 5.0.0 - 5.3.29
Fatal error: Declaration of C::M() must be compatible with that of A::M() in /in/3fsMh on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/3fsMh 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 T_CLASS in /in/3fsMh on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/3fsMh on line 2
Process exited with code 255.