3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1, 2, 3, 4, 'a', 'b'); foreach ($a as &$value) { $value *= 2; } unset($value); print_r($value);
Output for 7.1.0
Warning: A non-numeric value encountered in /in/QFIOP on line 4 Warning: A non-numeric value encountered in /in/QFIOP on line 4 Notice: Undefined variable: value in /in/QFIOP on line 7
Output for 5.0.4 - 5.6.23, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.14
Notice: Undefined variable: value in /in/QFIOP on line 7
Output for 5.0.0 - 5.0.3
Notice: Undefined variable: value in /in/QFIOP on line 7
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/QFIOP on line 3
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 '$' in /in/QFIOP on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/QFIOP on line 3
Process exited with code 255.