可加密64编码解码,用于对ID的编码解码
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2022-04-27 09:51:03
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可加密64编码解码,用于对ID的编码解码
<?php /** * 可加密64编码解码,用于对ID的编码解码 */ class code { private $key = null; function __construct($key) { $this->key = $key; } /** * 对数字编码 */ function encode($value) { $x = sprintf("%d", intval($value) ^ intval($this->key)); $y = $this->encode_b64(intval($x)); return $y; } /** *解码 */ function decode($pwd) { $pwd = $this->decode_b64($pwd); $re = strval(intval($pwd) ^ intval($this->key)); return $re; } /** * 重置密钥 */ function reset_key($key) { $this->key = $key; } /** * 64进位编码 */ public function encode_b64($n) { $table = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_'; $result = array(); $temp = $n; if (0 == $temp) { $result[] = '0'; } else { while (0 < $temp) { $result[] = $table[$temp % 64]; $temp = intval($temp / 64); } } //反转数组 krsort($result); return implode('', $result); } /** * 64进位解码 */ public function decode_b64($str) { $table = array("0"=> 0,"1"=> 1,"2"=> 2,"3"=> 3,"4"=> 4,"5"=> 5, "6"=> 6,"7"=> 7,"8"=> 8,"9"=> 9, "a"=> 10,"b"=> 11,"c"=> 12,"d"=> 13,"e"=> 14,"f"=> 15,"g"=> 16, "h"=> 17,"i"=> 18,"j"=> 19,"k"=> 20,"l"=> 21,"m"=> 22,"n"=> 23, "o"=> 24,"p"=> 25,"q"=> 26,"r"=> 27,"s"=> 28,"t"=> 29,"u"=> 30, "v"=> 31,"w"=> 32,"x"=> 33,"y"=> 34,"z"=> 35, "A"=> 36,"B"=> 37,"C"=> 38,"D"=> 39,"E"=> 40,"F"=> 41,"G"=> 42, "H"=> 43,"I"=> 44,"J"=> 45,"K"=> 46,"L"=> 47,"M"=> 48,"N"=> 49, "O"=> 50,"P"=> 51,"Q"=> 52,"R"=> 53,"S"=> 54,"T"=> 55,"U"=> 56, "V"=> 57,"W"=> 58,"X"=> 59,"Y"=> 60,"Z"=> 61, "-"=> 62,"_"=> 63); $result = 0; foreach (range(0, strlen($str) - 1) as $i) { $result *= 64; $result += $table[$str[$i]]; } return $result; } } $d = new code('123123'); echo $d->encode(222584587),"n"; echo $d->decode('dhr_U'),"n"; $d = new code('333333'); echo $d->encode(222584587),"n"; echo $d->decode('dgkAu'),"n";