3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array(array()); $arr = array(0 => "a", 1 => "b" ); $a[0] = $arr; echo($a[0]); ?>
Output for 5.4.0 - 7.2.0
Notice: Array to string conversion in /in/oFVh3 on line 10 Array
Output for 4.3.0 - 5.3.29
Array