3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php error_reporting(0); $arr = array(); for ($i = 0; $i < 1000000; $i++) { $arr[$i] = $i; } foreach ($arr as $k=>&$v) { $v[$k] = $v; }
based on 7SkQO
Output for 5.0.0 - 5.2.0, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Output for 5.2.1 - 5.6.28

Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/krPAO on line 11
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/krPAO on line 11
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/krPAO on line 11
Process exited with code 255.