3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array( 'x' => array(), ); mb_convert_variables( 'utf8' , 'auto' , $a ); var_dump($a);
Output for 4.3.0 - 5.6.22, 7.0.0 - 7.2.0
array(1) { ["x"]=> array(0) { } }
Output for 5.6.28
*RECURSION*