3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(10, 20); foreach($a as $k=>&$v) { unset($a[$k]); unset($a[$k+1]); var_dump($a); } echo count($a);
Output for 5.2.2 - 7.1.0
array(0) { } 0
Output for 5.0.0 - 5.2.1
array(0) { } array(0) { } 0
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/ShHIP on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/ShHIP 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/ShHIP on line 3
Process exited with code 255.