3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { static function foo() { echo "A\n"; } } class B extends A { static function foo() { echo "B\n"; } } $cb = array('B', 'parent::foo'); //call_user_func($cb); call_user_func(array('B','B::foo'));
Output for 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Deprecated: Callables of the form ["B", "B::foo"] are deprecated in /in/coMk5 on line 18 B
Output for 5.1.2 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27
B
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.1
Warning: call_user_func(B::B::foo): First argument is expected to be a valid callback in /in/coMk5 on line 18
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/coMk5 on line 5
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_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/coMk5 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/coMk5 on line 5
Process exited with code 255.

preferences:
212.12 ms | 401 KiB | 350 Q