Base64 online encoding and decoding implementation code demo and download _ php instance

Recently, several programs are encrypted using Base64, which is very confusing. online conversion is temporarily completed, but not all of them can be done, I hope it will help later. Online demo address:
Gb2312 version http://tools.jb51.net/tools/base64_decode-gb2312.php
Utf8 edition http://tools.jb51.net/tools/base64_decode-utf8.php

The code is as follows:

Header ('content-Type: text/html; charset = gb2312 ');
$ Txt1 = stripslashes (trim (@ $ _ POST ['text1']);
$ Button = @ $ _ POST ['click'];
$ Down = @ trim ($ _ GET ['low']);
If ($ down = 1 ){
Header ("Content-type: command ");
Header ("Content-Disposition: attachment; filename=base64_decode.txt ");
$ Contents = file_get_contents (basename ($ _ SERVER ['php _ SELF ']);
Echo $ contents;
Exit;
}
?>




Base64 online encoding and decoding gb2312