3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php interface Foo { public function thing(&$foo); } class Bar implements Foo { public function thing($foo) { $foo++; } } $bar = new Bar(); $a = 1; $bar->thing($a); var_dump($a);
Output for 7.0.0 - 7.1.0
Fatal error: Declaration of Bar::thing($foo) must be compatible with Foo::thing(&$foo) in /in/JaFrM on line 5
Process exited with code 255.
Output for hhvm-3.10.0 - 3.12.0
int(1)
Output for 5.4.0 - 5.6.28
Fatal error: Declaration of Bar::thing() must be compatible with Foo::thing(&$foo) in /in/JaFrM on line 5
Process exited with code 255.
Output for 5.0.0 - 5.3.29
Fatal error: Declaration of Bar::thing() must be compatible with that of Foo::thing() in /in/JaFrM on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/JaFrM 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_STRING in /in/JaFrM on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/JaFrM on line 2
Process exited with code 255.