Rss den karakter sorunu

Rss den haber çekiyorum ama çoğu sitede karakter sorunu yaşıyorum. Feed2post eklentisini kullanıyorum. Bazı siteler firefox da düzgün görüntülenirkjen aynı siteden içerik çektiğimde karakterler abuk subuk çıkıyor. feed2post eklentisini nasıl editlemem gerekiyor acaba ? Bu konuda fikri olan var mı ?

Eklentinin kodları aşağıdadır.


/*
Plugin Name: Feed2Post
Plugin URI: http://www.rasmusbengtsson.se/feed2post
Description: Imports posts from RSS-feed as regular posts. Runs once every hour using WordPress internal cronjob and feed functions.
Author: Rasmus Bengtsson
Author URI: http://www.rasmusbengtsson.se/
Version: 1.2
*/

class Feed2Post {
function Feed2Post() {
// Creates admin menu
add_action( 'admin_menu', array( &$this, 'add_admin_menu' ) );
// Add hook called when cronjob is executed
add_action( 'f2p_cronjob', array( &$this, 'cronjob' ) );
}

function add_admin_menu() {
add_management_page( "Feed2Post", "Feed2Post", "manage_options", "feed2post", array( &$this, 'admin_page' ) );
}

function cronjob() {
global $wpdb;
// Get list of feeds
$feeds=$wpdb->get_results( "SELECT * FROM {$wpdb->prefix}feed2post_feeds WHERE 1;" );
foreach ( $feeds as $feed ) {
// Get feed contents
$items = $this->fetchfeed( base64_decode( $feed->uri ) );
foreach ( $items as $item ) :
// Compare to list of already posted
$postid=$wpdb->get_var( $wpdb->prepare( "SELECT postid FROM {$wpdb->prefix}feed2post_posted WHERE id = %s;", $item->get_id() ) );

$header_footer[0] = @$feed->post_header;
$header_footer[1] = @$feed->post_footer;

$feedtags = array("%title%", "%link%");
$feedtags_replace = array($item->get_title(), $item->get_permalink());

$header_footer = str_ireplace($feedtags, $feedtags_replace, $header_footer);

// If it not exists
if ( $postid === null ) {
// Create post object
$post = array();
$post['post_title'] = $item->get_title();
$post['post_content'] = $header_footer[0] . $item->get_content() . $header_footer[1];
$post['post_status'] = 'publish';
$post['post_author'] = $feed->author;
$post['post_category'] = array($feed->category);
$post['post_date_gmt'] = gmdate("Y-m-d H:i:s", $item->get_date("U"));
$post['post_date'] = get_date_from_gmt( $post['post_date_gmt'] );

// Insert the post into the database
$postid = wp_insert_post( $post );
$wpdb->query( $wpdb->prepare( "INSERT INTO {$wpdb->prefix}feed2post_posted (`id` ,`postid`) VALUES (%s,%d);", $item->get_id(), $postid ) );
}
// If it exists and should be updated
elseif ( $feed->updateposts == 1 ) {
$post = array();
$post['ID'] = $postid;
$post['post_title'] = $item->get_title();
$post['post_content'] = $header_footer[0] . $item->get_content() . $header_footer[1];
$post['post_date_gmt'] = gmdate("Y-m-d H:i:s", $item->get_date("U"));
$post['post_date'] = get_date_from_gmt( $post['post_date_gmt'] );
// Update the post into the database
wp_update_post($post);
}
endforeach;
}
}

// Uses built-in feed-reader, returns SimplePie-object
function fetchfeed( $address ) {
include_once( ABSPATH . WPINC . '/feed.php' );
$rss = fetch_feed( $address );
if ( !is_wp_error( $rss ) ) :
$maxitems = $rss->get_item_quantity( 20 );
$rss_items = $rss->get_items( 0, $maxitems );
return $rss_items;
endif;
return;
}

// Handles the different admin pages
function admin_page() {
if ( empty( $_GET['subpage'] ) ) $this->admin_list_feeds();
elseif ( $_GET['subpage'] == "add" ) $this->admin_add_feed();
elseif ( $_GET['subpage'] == "edit" ) $this->admin_edit_feed();
elseif ( $_GET['subpage'] == "delete" ) {
$this->admin_delete_feed();
$this->admin_list_feeds();
}
}

// Lists added feeds
function admin_list_feeds(){
if ( !current_user_can( 'manage_options' ) ) {
wp_die( __('You do not have sufficient permissions to access this page.', 'feed2post') );
}
global $wpdb;
// Get list of feeds
$feeds=$wpdb->get_results( "SELECT * FROM {$wpdb->prefix}feed2post_feeds WHERE 1;" );

?>

Feed2Post -

if ( $feeds !== null ) {
?>

$i = 0;
foreach ( $feeds as $feed ) {
$i++;

$author = get_userdata( $feed->author );

$category = get_cat_name( $feed->category );

if ( $feed->updateposts == 1 ) {
$updateposts = __( "Yes" , 'feed2post');
}
else {
$updateposts = __( "No" , 'feed2post');
}
?>
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}
?>

}
?>

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}

// Add feed
function admin_add_feed(){
if ( !current_user_can( 'manage_options' ) ) {
wp_die( __( 'You do not have sufficient permissions to access this page.' , 'feed2post') );
}
if ( !empty( $_POST ) ) {
$_POST['f2p_address'] = trim( $_POST['f2p_address'] );
if (!empty($_POST['f2p_address'])) {
global $wpdb;
$wpdb->query($wpdb->prepare("INSERT INTO {$wpdb->prefix}feed2post_feeds (`uri`, `author`, `category`, `post_header`, `post_footer`, `updateposts`) VALUES ('%s', %d, %d, '%s', '%s', %d);", base64_encode( $_POST['f2p_address'] ), $_POST['f2p_author'], $_POST['f2p_category'], $_POST['f2p_post_header'], $_POST['f2p_post_footer'], ( isset( $_POST['f2p_updateposts'] ) ? $_POST['f2p_updateposts'] : 0 ) ) );
?>