<?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) 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>