3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = ""; for($i=0;$i<100;$i++) { $a = strtolower(strtoupper(implode(array_merge(str_split($a), range("a", "z"))))); }
Output for 5.0.0 - 7.1.0
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: str_split() in /in/l4Unf on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: str_split() in /in/l4Unf on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: str_split() in /in/l4Unf on line 3