3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $tess=count_chars( "1AAABBCCCDDDDDDD", 1); echo $tess[1];
Output for 5.5.0 - 7.1.0
Notice: Undefined offset: 1 in /in/uLpM8 on line 3
Output for 4.3.0 - 5.4.45