3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = 'abca'; $strpos = strpos($str, 'a'); echo strtr ($str[$strpos], array ('a' => '<u>replacement</u>'));
based on FU5Mu
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.0
<u>replacement</u>