3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr1 = array(1, 2); $arr2 = array(11, 12); foreach ($arr1 as &$v) { } foreach ($arr2 as &$v) { } var_dump($arr1); var_dump($arr2);
Output for 5.2.1 - 7.1.0
array(2) { [0]=> int(1) [1]=> int(2) } array(2) { [0]=> int(11) [1]=> &int(12) }
Output for 5.0.0 - 5.2.0
array(2) { [0]=> &int(1) [1]=> &int(2) } array(2) { [0]=> &int(11) [1]=> &int(12) }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/vDgXR on line 5
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 '$' in /in/vDgXR on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/vDgXR on line 5
Process exited with code 255.