PHP之生成唯一字符串

逃离我推掉我的手 2021-11-17 06:36 386阅读 0赞

/**
      * [生成唯一字符串]
      * @ 0-存数字字符串；1-小写字母字符串；2-大写字母字符串；3-大小写数字字符串；4-字符；
      *   5-数字，小写，大写，字符混合
      * @param  integer $type   [字符串的类型]
      * @param  integer $length [字符串的长度]
      * @param  integer $time   [是否带时间1-带，0-不带]
      * @return [string]  $str    [返回唯一字符串]
      */
    public static function randSole($type = 0,$length = 12,$time=0){
         $str = $time == 0 ? '':date('YmdHis',time());
         switch ($type) {
             case 0:
                 for((int)$i = 0;$i <= $length;$i++){
                     if(mb_strlen($str) == $length){
                         $str = $str;
                     }else{
                         $str .= rand(0,9);
                     }
                 }
                 break;
             case 1:
                 for((int)$i = 0;$i <= $length;$i++){
                     if(mb_strlen($str) == $length){
                         $str = $str;
                     }else{
                         $rand = "qwertyuioplkjhgfdsazxcvbnm";
                         $str .= $rand{mt_rand(0,26)};
                     }
                 }
                 break;
             case 2:
                 for((int)$i = 0;$i <= $length;$i++){
                     if(mb_strlen($str) == $length){
                         $str = $str;
                     }else{
                         $rand = "QWERTYUIOPLKJHGFDSAZXCVBNM";
                         $str .= $rand{mt_rand(0,26)};
                     }
                 }
                 break;
             case 3:
                 for((int)$i = 0;$i <= $length;$i++){
                     if(mb_strlen($str) == $length){
                         $str = $str;
                     }else{
                         $rand = "123456789qwertyuioplkjhgfdsazxcvbnmQWERTYUIOPLKJHGFDSAZXCVBNM";
                         $str .= $rand{mt_rand(0,35)};
                     }
                 }
                 break;
             case 4:
                 for((int)$i = 0;$i <= $length;$i++){
                     if(mb_strlen($str) == $length){
                         $str = $str;
                     }else{
                         $rand = "!@#$%^&*()_+=-~`";
                         $str .= $rand{mt_rand(0,17)};
                     }
                 }
                 break;
             case 5:
                 for((int)$i = 0;$i <= $length;$i++){
                     if(mb_strlen($str) == $length){
                         $str = $str;
                     }else{
                         $rand = "123456789qwertyuioplkjhgfdsazxcvbnmQWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_+=-~`";
                         $str .= $rand{mt_rand(0,52)};
                     }
                 }
                 break;
         }
         return $str;
     }