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<?php class Foo { public static function doFoo() { echo 'foo'; } } function run(callable $callback) { $callback(); } $doFoo1 = array('Foo', 'doFoo'); $doFoo2 = 'Foo::doFoo'; run($doFoo1); run($doFoo2);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 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 - 8.3.7
foofoo
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.21
foo Fatal error: Call to undefined function Foo::doFoo() in /in/YdVf7 on line 14
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Catchable fatal error: Argument 1 passed to run() must be an instance of callable, array given, called in /in/YdVf7 on line 20 and defined in /in/YdVf7 on line 12
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Fatal error: Argument 1 passed to run() must be an object of class callable, called in /in/YdVf7 on line 20 and defined in /in/YdVf7 on line 12
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Argument 1 must be an object of class callable in /in/YdVf7 on line 12
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/YdVf7 on line 6
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_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/YdVf7 on line 6
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/YdVf7 on line 6
Process exited with code 255.

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