3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = array(0,1,2); foreach ($x as $k => &$v) { print $k; if ($k == 0) { unset($x[1]); } foreach ($x as $y) { } } echo "\n"; $a = array(0,1,2); foreach ($a as $k1 => $v1) { print $k1; if ($k1 == 0) { unset($a[1]); } foreach ($a as $b) { } }
Output for hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
02 012
Output for 5.2.2 - 5.6.28
0 012
Output for 5.0.0 - 5.2.1
012 012
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/Xa2Kf 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 '$' in /in/Xa2Kf on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/Xa2Kf on line 4
Process exited with code 255.