3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $data = array('one', 'two', 'three'); $left = '<b>'; $right = '</b>'; echo join("$right, $left", $data) . "<br>"; echo $left . join("$right, $left", $data) . $right;
based on UpEXn
Output for 4.3.0 - 7.2.0
one</b>, <b>two</b>, <b>three<br><b>one</b>, <b>two</b>, <b>three</b>