Base64的编译和解码的简单例子
<FORM>
        <INPUT TYPE=TEXT NAME=code VALUE="<?echo $code?>">
        <INPUT TYPE=SUBMIT NAME=action VALUE="Encode">
        <INPUT TYPE=SUBMIT NAME=action VALUE="Decode">
    </FORM><BR>
    <?
        
if($action == "Encode") {
            echo 
"<B><FONT FACE=Arial>Output:</FONT></B><BR>";
            echo 
base64_encode($code);
        } elseif(
$action == "Decode") {
            echo 
"<B><FONT FACE=Arial>Output:</FONT></B><BR>";
            echo 
base64_decode($code);
        }
    
?>