PHP之生成唯一字符串

生成唯一字符串的PHP实现

最新推荐文章于 2022-11-18 08:52:45 发布

原创最新推荐文章于 2022-11-18 08:52:45 发布 · 1.3k 阅读

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 /**
  * [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;
 }