3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $A = array(3,4); $B = array(10, 20); foreach ($A as $k => &$i) $i++; foreach ($B as $k => &$i) $i++; var_dump($A);
Output for 5.2.1 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> int(4) [1]=> int(5) }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.2.0
array(2) { [0]=> &int(4) [1]=> &int(5) }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/bR8Xd on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/bR8Xd 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/bR8Xd on line 5
Process exited with code 255.