【PHP】生成随机字符串
可用作短信验证码,登陆验证码等
/** +---------------------------------------------------------- * 生成随机字符串 +---------------------------------------------------------- * @param int $length 要生成的随机字符串长度 * @param string $type 随机码类型:0,数字+大小写字母;1,数字;2,小写字母;3,大写字母;4,特殊字符;-1,数字+大小写字母+特殊字符 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ function randCode($length = 5, $type = 0) { $arr = array(1 => "0123456789", 2 => "abcdefghijklmnopqrstuvwxyz", 3 => "ABCDEFGHIJKLMNOPQRSTUVWXYZ", 4 => "~@#$%^&*(){}[]|"); if ($type == 0) { array_pop($arr); $string = implode("", $arr); } elseif ($type == "-1") { $string = implode("", $arr); } else { $string = $arr[$type]; } $count = strlen($string) - 1; $code = ''; for ($i = 0; $i < $length; $i++) { $code .= $string[rand(0, $count)]; } return $code; } echo randCode(6,1);
原文:http://www.thinkphp.cn/topic/7717.html
还没有人抢沙发呢~