3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function main() { $callback = function() { return 'foo'; }; echo acceptCallable($callback); echo acceptCallable('printBar'); } function printBar() { return 'bar'; } function acceptCallable(Callable $callback) { return $callback(); } main();
Output for 5.4.0 - 7.1.0
foobar
Output for 5.3.0 - 5.3.29
Catchable fatal error: Argument 1 passed to acceptCallable() must be an instance of Callable, instance of Closure given, called in /in/2Aecl on line 9 and defined in /in/2Aecl on line 18
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/2Aecl on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/2Aecl on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/2Aecl on line 5
Process exited with code 255.