$password = ‘‘;$chars = ‘123456789abcdefghjkmnpqrstuvwxyz‘;for($i = 0; $i < 8; $i ++) { $password .= substr ( $chars, mt_rand ( 0, strlen ( $chars ) - 1 ), 1 );}
随机取6位数字和字母方法
原文：http://www.cnblogs.com/xlz307/p/4235817.html
