3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php error_reporting(E_ALL); function byref_function(&$a, &$b) { $a = 2; $b = 1; } $array = [1, 2]; byref_function(...$array); var_dump($array);
Output for 5.6.0 - 7.1.0
array(2) { [0]=> int(2) [1]=> int(1) }
Output for 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '.' in /in/YbUZ4 on line 12
Process exited with code 255.
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '.', expecting ')' in /in/YbUZ4 on line 12
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/YbUZ4 on line 10
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 '[' in /in/YbUZ4 on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/YbUZ4 on line 10
Process exited with code 255.