/** * 產生隨機字符串 * * 產生一個指定長度的隨機字符串,并返回給用戶 * * @access public * @param int $len 產生字符串的位數 * @return string */ function randStr($len=6) { $chars='ABDEFGHJKLMNPQRSTVWXYabdefghijkmnpqrstvwxy23456789#%*'; // characters to build the password from mt_srand((double)microtime()*1000000*getmypid()); // seed the random number generater (must be done) $password=''; while(strlen($password)<$len) $password.=substr($chars,(mt_rand()%strlen($chars)),1); return $password; }
