- chr: documentation ( source)
- mt_rand: documentation ( source)
- array_merge: documentation ( source)
- range: documentation ( source)
<?php
function rand_string($nb_char) { $ascii = array_merge(range(65,90), range(97,122),range(48,57)); $string = ''; for($i=0;$i<intval($nb_char);$i++) { $string.= chr($ascii[(mt_rand(0,count($ascii) - 1))]); } return $string;}echo rand_string(8);