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run code in 150+ php & hhvm versions
Bugs & Features
<?php class CallableStringifier { private static $callables = array(); public static function stringify($callable) { $id = count(self::$callables); self::$callables[$id] = $callable; if (is_array($callable)) { $func = new ReflectionMethod($callable[0], $callable[1]); } else if (is_string($callable) && false !== strpos($callable, '::')) { $func = new ReflectionMethod($callable); } else { $func = new ReflectionFunction($callable); } $params = array(); foreach ($func->getParameters() as $param) { $params[$param->getPosition()] = '$' . $param->getName(); } return 'return ' . __CLASS__ . '::call(' . $id . ', ' . implode(', ', $params) . ');'; } public static function call() { $args = func_get_args(); $id = array_shift($args); var_dump($args); return call_user_func_array(self::$callables[$id], $args); } } var_dump(CallableStringifier::stringify(function($arg1) { return $arg1; })); $func = create_function('$arg1', CallableStringifier::stringify(function($arg1) { return $arg1; })); echo $func(1);
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(43) "return CallableStringifier::call(0, $arg1);" array(1) { [0]=> int(1) } 1
Output for 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/AZi7s on line 38
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/AZi7s on line 38
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/AZi7s on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/AZi7s 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/AZi7s on line 5
Process exited with code 255.