3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function ff(&$var) { return $var; } class A { public function __construct($f) { $this->f = $f; } public function __invoke() { $args = array(); foreach ((array) func_get_args() as &$arg) { $args[] = &$arg; } return call_user_func_array($this->f, $args); } } $a = new A('ff'); echo call_user_func_array($a, array('A'));
based on JZBHi
Output for 5.5.24 - 7.2.0
A
Output for 5.3.0 - 5.4.45
Parse error: syntax error, unexpected '&' in /in/LHmcu on line 16
Process exited with code 255.
Output for 5.1.0 - 5.2.17
Parse error: syntax error, unexpected '&', expecting T_STRING or T_VARIABLE or '$' in /in/LHmcu on line 16
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '&', expecting T_STRING or T_VARIABLE or '$' in /in/LHmcu on line 16
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/LHmcu on line 8
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/LHmcu on line 8
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/LHmcu on line 8
Process exited with code 255.