[PHP] php 可加密解密64编码解码,用于对ID的编码解码 →→→→→进入此内容的聊天室

来自 , 2020-10-08, 写在 PHP, 查看 200 次.
URL http://www.code666.cn/view/bbb001ba
  1. <?php
  2.  
  3. /**
  4.  * 可加密64编码解码,用于对ID的编码解码
  5.  */
  6. class code {
  7.  
  8.     private $key = null;
  9.  
  10.     function __construct($key) {
  11.         $this->key = $key;
  12.     }
  13.  
  14.     /**
  15.      * 对数字编码
  16.      */
  17.     function encode($value) {
  18.         $x = sprintf("%d", intval($value) ^ intval($this->key));
  19.         $y = $this->encode_b64(intval($x));
  20.         return $y;
  21.     }
  22.  
  23.     /**
  24.      *解码
  25.      */
  26.     function decode($pwd) {
  27.         $pwd = $this->decode_b64($pwd);
  28.         $re = strval(intval($pwd) ^ intval($this->key));
  29.         return $re;
  30.     }
  31.  
  32.     /**
  33.      * 重置密钥
  34.      */
  35.     function reset_key($key) {
  36.         $this->key = $key;
  37.     }
  38.  
  39.     /**
  40.      * 64进位编码
  41.      */
  42.     public function encode_b64($n) {
  43.         $table = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_';
  44.         $result = array();
  45.         $temp = $n;
  46.         if (0 == $temp) {
  47.             $result[] = '0';
  48.         } else {
  49.             while (0 < $temp) {
  50.                 $result[] = $table[$temp % 64];
  51.                 $temp = intval($temp / 64);
  52.             }
  53.         }
  54.         //反转数组
  55.         krsort($result);
  56.         return implode('', $result);
  57.     }
  58.  
  59.     /**
  60.      * 64进位解码
  61.      */
  62.     public function decode_b64($str) {
  63.         $table = array("0" => 0, "1" => 1, "2" => 2, "3" => 3, "4" => 4, "5" => 5,
  64.             "6" => 6, "7" => 7, "8" => 8, "9" => 9,
  65.             "a" => 10, "b" => 11, "c" => 12, "d" => 13, "e" => 14, "f" => 15, "g" => 16,
  66.             "h" => 17, "i" => 18, "j" => 19, "k" => 20, "l" => 21, "m" => 22, "n" => 23,
  67.             "o" => 24, "p" => 25, "q" => 26, "r" => 27, "s" => 28, "t" => 29, "u" => 30,
  68.             "v" => 31, "w" => 32, "x" => 33, "y" => 34, "z" => 35,
  69.             "A" => 36, "B" => 37, "C" => 38, "D" => 39, "E" => 40, "F" => 41, "G" => 42,
  70.             "H" => 43, "I" => 44, "J" => 45, "K" => 46, "L" => 47, "M" => 48, "N" => 49,
  71.             "O" => 50, "P" => 51, "Q" => 52, "R" => 53, "S" => 54, "T" => 55, "U" => 56,
  72.             "V" => 57, "W" => 58, "X" => 59, "Y" => 60, "Z" => 61,
  73.             "-" => 62, "_" => 63);
  74.         $result = 0;
  75.         foreach (range(0, strlen($str) - 1) as $i) {
  76.             $result *= 64;
  77.             $result += $table[$str[$i]];
  78.         }
  79.         return $result;
  80.     }
  81.  
  82. }
  83.  
  84. $d = new code('123123');
  85. echo $d->encode(222584587), "\\n";
  86. echo $d->decode('dhr_U'), "\\n";
  87.  
  88. $d = new code('333333');
  89. echo $d->encode(222584587), "\\n";
  90. echo $d->decode('dgkAu'), "\\n";
  91. //该片段来自于http://yuncode.net
  92.  

回复 "php 可加密解密64编码解码,用于对ID的编码解码"

这儿你可以回复上面这条便签

captcha