3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo count_chars( "1AAABBCCCDDDDDDDAB", 2);
Output for 5.4.0 - 7.2.6
Notice: Array to string conversion in /in/8Jbbl on line 2 Array
Output for 4.3.0 - 5.3.29
Array