<?php
/**
* 常用静态类，这里主要整理了一些PHP常常会用到的方法。
*/
class C {
    /*
     * 私有处理随机数的内置参数
     * array 随机数数组/param 随机数长度
     * 返回一个随机数
     */
    static private function Random($array , $param) {
        $randArray = $array;
        $randCount = count($randArray);
        $num = intval($param);
        $resultStr = "";
        for($i = 0 ; $i < $num ; $i++){
            $resultStr .= $randArray[rand(0, intval($randCount) - 1)];
        }
        return $resultStr;
    }
      
    //随机数（数字类型）
    static public function Randnum($param = 8){
        $randArray = str_split("1234567890");
        $resultStr = C::Random($randArray,$param);
        return $resultStr;
    }
      
    //随机数（混合类型） - 无0
    static public function RandStr($param = 8 , $capslock = FALSE){
        $randArray = str_split("abcdefghijklmnopqrstuvwxyz123456789ABCDEFGHIGKLMNOPQRSTUVWXYZ");
        $resultStr = C::Random($randArray,$param);
        if($capslock){
            return strtoupper($resultStr);
        }
        else {
            return $resultStr;
        }
    }
      
    //加密字符串
    static public function EnBaseCode($data, $key = "ZCStrong"){
        $key = md5($key);//对于预设的KEY，MD5
        $x  = 0;
        $len = strlen($data);
        $l  = strlen($key);
        for ($i = 0; $i < $len; $i++){
            if ($x == $l){
                $x = 0;
            }
            $char .= $key{$x};
            $x++;
        }
        for ($i = 0; $i < $len; $i++){
            $str .= chr(ord($data{$i}) + (ord($char{$i})) % 256);
        }
        return base64_encode($str);
    }
      
    //机密字符串
    static public function DeBaseCode($data, $key = "ZCStrong"){
        $key = md5($key);
        $x = 0;
        $data = base64_decode($data);
        $len = strlen($data);
        $l = strlen($key);
        for ($i = 0; $i < $len; $i++){
            if ($x == $l){
                $x = 0;
            }
            $char .= substr($key, $x, 1);
            $x++;
        }
        for ($i = 0; $i < $len; $i++){
            if (ord(substr($data, $i, 1)) < ord(substr($char, $i, 1))){
                $str .= chr((ord(substr($data, $i, 1)) + 256) - ord(substr($char, $i, 1)));
            }
            else{
                $str .= chr(ord(substr($data, $i, 1)) - ord(substr($char, $i, 1)));
            }
        }
        return $str;
    }
      
    //正则手机号 /^((1[3,5,8][0-9])|(14[5,7])|(17[0,6,7,8]))\\d{8}$/
    static public function RegularPhone($string){
        $resultStr = preg_match("/^((1[3,5,8][0-9])|(14[5,7])|(17[0,6,7,8]))\\d{8}$/",$string);
        if(intval($resultStr) == 1){
            return TRUE;
        }
        else{
            return FALSE;
        }
    }

    //正则邮箱
    static public function RegularEmail($string){
        $resultStr = preg_match("/^([0-9A-Za-z\\\\-_\\\\.]+)@([0-9a-z]+\\\\.[a-z]{2,3}(\\\\.[a-z]{2})?)$/i",$string);
        if(intval($resultStr) == 1){
            return TRUE;
        }
        else{
            return FALSE;
        }
    }
      
    //正则验证身份证/(^([d]{15}|[d]{18}|[d]{17}x)$)/
    static public function RegularIdCard($string){
        $resultStr = preg_match("/(^([d]{15}|[d]{18}|[d]{17}x)$)/",$string);
        if(intval($resultStr) == 1){
            return TRUE;
        }
        else{
            return FALSE;
        }
    }
      
    //处理字符串信息
    static public function hStr($string){
        if(isset($string) && !empty($string)){
            return addslashes(strip_tags($string));
        }
        else{
            return "";
        }
    }
}