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run code in 200+ 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 - 7.1.7
Notice: Undefined variable: s in /in/6tSu3 on line 9
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: s in /in/6tSu3 on line 9