Static classes are commonly used in PHP development

<?php
/**
 * 常用静态类，这里主要整理了一些PHP常常会用到的方法。
 *
 * @author ZCStrong - youkuiyuan
 */
  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 "";
      }
    }
  }