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run code in 150+ php & hhvm versions
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<?php $func = 'strtolower'; $invoker = function(callable $invocation, array $args) { return call_user_func_array($invocation, $args); }; var_dump($invoker($func, array('TEST'));
Output for 5.3.0 - 5.4.16
Parse error: syntax error, unexpected ';' in /in/NW6Yg on line 7
Process exited with code 255.