3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function mt_rand_str ($l, $c = '1234567890') { for ($s = '', $cl = strlen($c)-1, $i = 0; $i < $l; $s .= $c[mt_rand(0, $cl)], ++$i); return $s; } echo $s; ?>
Output for 5.0.4 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: s in /in/6tSu3 on line 9
Output for hhvm-3.10.0
Notice: Undefined variable: s in /in/6tSu3 on line 13
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: s in /in/6tSu3 on line 9