3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = array('bg','bd', 'bt'); foreach ($array as &$a) { echo $a = 'a'; } echo $a; print_r($array); ?>
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
aaaaArray ( [0] => a [1] => a [2] => a )
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/TVrFo on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/TVrFo 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/TVrFo on line 4
Process exited with code 255.