3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $arr = array(1, 2, 3, 4); foreach ($arr as &$value) { $value = $value * 2; } echo $arr; ?>
Output for 5.4.0 - 7.1.7
Notice: Array to string conversion in /in/Crtek on line 7 Array
Output for 5.0.0 - 5.3.29
Array
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/Crtek on line 4
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 '$' in /in/Crtek on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/Crtek on line 4
Process exited with code 255.