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PHP与JavaScript之间中文base64码转换代码

 2008-09-01 16:21:50 来源:WEB开发网   
核心提示://php base64_encode<?phpfunction str_encode($str){ return base64_encode(iconv('GB18030','UTF-8',$str));}echo str_encode('你好!美女!');?&

//php base64_encode

<?php
function str_encode($str){
     return base64_encode(iconv('GB18030','UTF-8',$str));
}
echo str_encode('你好!美女!');
?>

//////////////////////////////////////////////////////////////////////////////////////

另附PHP的base64的加解密函数!

 {echo base64_encode($str)."<br />";   //加密
$ss='Z25pZD0yNSZncGljaT0x';
  echo base64_decode($ss);     //解密
/////////////////////////////////////////////////////////////////////////////////////

//javaScript  base64_decode

<script language='Javascript'>
/* utf.js - UTF-8 <=> UTF-16 convertion
*
* Copyright (C) 1999 Masanao Izumo <iz@onicos.co.jp>
* Version: 1.0
* LastModified: Dec 25 1999
* This library is free.  You can redistribute it and/or modify it.
*/

/*
* Interfaces:
* utf8 = utf16to8(utf16);
* utf16 = utf16to8(utf8);
*/

function utf16to8(str) {
   var out, i, len, c;

   out = "";
   len = str.length;
   for(i = 0; i < len; i++) {
     c = str.charCodeAt(i);
     if ((c >= 0x0001) && (c <= 0x007F)) {
       out += str.charAt(i);
     } else if (c > 0x07FF) {
       out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
       out += String.fromCharCode(0x80 | ((c >>  6) & 0x3F));
       out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));
     } else {
       out += String.fromCharCode(0xC0 | ((c >>  6) & 0x1F));
       out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));
     }
   }
   return out;
}

function utf8to16(str) {
   var out, i, len, c;
   var char2, char3;

   out = "";
   len = str.length;
   i = 0;
   while(i < len) {
     c = str.charCodeAt(i++);
     switch(c >> 4)
     {
      case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
       // 0xxxxxxx
       out += str.charAt(i-1);
       break;
      case 12: case 13:
       // 110x xxxx  10xx xxxx
       char2 = str.charCodeAt(i++);
       out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
       break;
      case 14:
       // 1110 xxxx  10xx xxxx  10xx xxxx
       char2 = str.charCodeAt(i++);
       char3 = str.charCodeAt(i++);
       out += String.fromCharCode(((c & 0x0F) << 12) |
                      ((char2 & 0x3F) << 6) |
                      ((char3 & 0x3F) << 0));
       break;
     }
   }

   return out;
}

/* Copyright (C) 1999 Masanao Izumo <iz@onicos.co.jp>
* Version: 1.0
* LastModified: Dec 25 1999
* This library is free.  You can redistribute it and/or modify it.
*/

/*
* Interfaces:
* b64 = base64encode(data);
* data = base64decode(b64);
*/


var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var base64DecodeChars = new Array(
   -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
   52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
   -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
   15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
   -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
   41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1);

function base64encode(str) {
   var out, i, len;
   var c1, c2, c3;

   len = str.length;
   i = 0;
   out = "";
   while(i < len) {
     c1 = str.charCodeAt(i++) & 0xff;
     if(i == len)
     {
       out += base64EncodeChars.charAt(c1 >> 2);
       out += base64EncodeChars.charAt((c1 & 0x3) << 4);
       out += "==";
       break;
     }
     c2 = str.charCodeAt(i++);
     if(i == len)
     {
       out += base64EncodeChars.charAt(c1 >> 2);
       out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
       out += base64EncodeChars.charAt((c2 & 0xF) << 2);
       out += "=";
       break;
     }
     c3 = str.charCodeAt(i++);
     out += base64EncodeChars.charAt(c1 >> 2);
     out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
     out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6));
     out += base64EncodeChars.charAt(c3 & 0x3F);
   }
   return out;
}

function base64decode(str) {
   var c1, c2, c3, c4;
   var i, len, out;

   len = str.length;
   i = 0;
   out = "";
   while(i < len) {
     /* c1 */
     do {
       c1 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
     } while(i < len && c1 == -1);
     if(c1 == -1)
       break;

   /* c2 */
     do {
       c2 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
     } while(i < len && c2 == -1);
     if(c2 == -1)
       break;

   out += String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4));

   /* c3 */
     do {
       c3 = str.charCodeAt(i++) & 0xff;
       if(c3 == 61)
         return out;
       c3 = base64DecodeChars[c3];
     } while(i < len && c3 == -1);
     if(c3 == -1)
       break;

   out += String.fromCharCode(((c2 & 0XF) << 4) | ((c3 & 0x3C) >> 2));

   /* c4 */
     do {
       c4 = str.charCodeAt(i++) & 0xff;
       if(c4 == 61)
         return out;
       c4 = base64DecodeChars[c4];
     } while(i < len && c4 == -1);
     if(c4 == -1)
       break;
     out += String.fromCharCode(((c3 & 0x03) << 6) | c4);
   }
   return out;
}
//input base64 encode
function strdecode(str){
     return utf8to16(base64decode(str));
}
document.write(strdecode('5L2g5aW9Iee+juWlsyE='));
</script>

Tags:PHP JavaScript 之间

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