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<?php abstract class Foo { abstract function fooBar(); } $callable = array('Foo', 'fooBar'); var_dump(is_callable($callable)); //var_dump(call_user_func($callable));
Output for 5.3.18 - 5.3.29, 5.4.8 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(false)
Output for 5.0.0 - 5.0.5, 5.1.1, 5.3.0 - 5.3.17, 5.4.0 - 5.4.7
bool(true)
Output for 5.1.2 - 5.1.6, 5.2.0 - 5.2.17
Strict Standards: Non-static method Foo::fooBar() cannot be called statically in /in/f4c7a on line 9 bool(true)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/f4c7a on line 10
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/f4c7a 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/f4c7a on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/f4c7a on line 3
Process exited with code 255.

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