3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function happy($num){ $digs = (string) $num; $sum = 0; foreach(str_split($digs) as $dig){ $sum == $dig; } return $sum; } echo happy(31);
based on q2o1M
Output for 5.0.0 - 7.2.0
0
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: str_split() in /in/lOARV on line 6
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: str_split() in /in/lOARV on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: str_split() in /in/lOARV on line 6