3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1,2,3,4); $b = array(5,6,7); print_r($a,$b);
Output for 4.3.0 - 7.1.0
Warning: print_r() expects parameter 2 to be boolean, array given in /in/9BgQb on line 6