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run code in 150+ php & hhvm versions
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<?php $a = function ($a, &$b) use (&$c ) { }; var_dump((array) $a);
Output for 5.3.3 - 5.6.28, 7.0.0 - 7.1.0
array(1) { [0]=> object(Closure)#1 (2) { ["static"]=> array(1) { ["c"]=> &NULL } ["parameter"]=> array(2) { ["$a"]=> string(10) "<required>" ["&$b"]=> string(10) "<required>" } } }
Output for hhvm-3.12.0
array(1) { [0]=> object(Closure$;1139027524$d3ce105065ecf222c62eb8d483b6ff0c$)#1 (2) { ["static"]=> array(1) { ["c"]=> &NULL } ["parameter"]=> array(2) { ["$a"]=> string(10) "<required>" ["$b"]=> string(10) "<required>" } } }
Output for hhvm-3.10.0
array(1) { [0]=> object(Closure$;1139027524$dc18d5f988bfb798ab231fca9f1f1d1b$)#1 (2) { ["static"]=> array(1) { ["c"]=> &NULL } ["parameter"]=> array(2) { ["$a"]=> string(10) "<required>" ["$b"]=> string(10) "<required>" } } }
Output for 5.3.0 - 5.3.2
array(0) { }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/WIZqG on line 4
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/WIZqG on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/WIZqG on line 4
Process exited with code 255.