自动从其它站点RSS抓取文章 – WordPress 教程

代码基本原理，新建一个自定义分类法“shot”，自动从另一个站点的RSS抓取文章，放在一个数组中，再用这个数组创建“shot”文章，并为文章添加自定义栏目image和link_url，方便调用缩略图和原文链接。

将下面代码添加到当前主题functions.php中即可。

<?/* Post Type   ------------------------------------------------------------------------------------ */add_action( 'init', 'register_cpt_shot' );function register_cpt_shot() {    $labels = array(        'name' => _x( 'Dribble Shots', 'shot' ),        'singular_name' => _x( 'Dribbble Shot', 'shot' ),        'add_new' => _x( 'Add New', 'shot' ),        'add_new_item' => _x( 'Add New Dribbble Shot', 'shot' ),        'edit_item' => _x( 'Edit Dribbble Shot', 'shot' ),        'new_item' => _x( 'New Dribbble Shot', 'shot' ),        'view_item' => _x( 'View Dribbble Shot', 'shot' ),        'search_items' => _x( 'Search Dribble Shots', 'shot' ),        'not_found' => _x( 'No dribble shots found', 'shot' ),        'not_found_in_trash' => _x( 'No dribble shots found in Trash', 'shot' ),        'parent_item_colon' => _x( 'Parent Dribbble Shot:', 'shot' ),        'menu_name' => _x( 'Dribble Shots', 'shot' ),    );    $args = array(        'labels' => $labels,        'hierarchical' => false,        'supports' => array( 'title', 'custom-fields' ),        'public' => true,        'show_ui' => true,        'show_in_menu' => true,        'show_in_nav_menus' => false,        'publicly_queryable' => true,        'exclude_from_search' => false,        'has_archive' => true,        'query_var' => true,        'can_export' => true,        'rewrite' => true,        'capability_type' => 'post'    );    register_post_type( 'shot', $args );}/* Import Shots via RSS   ------------------------------------------------------------------------------------ */// grab the image src from teh descriptionfunction get_image($string) {    preg_match_all('/<img[^>]+>/i',$string, $result);    $img = array();    foreach( $result[0] as $img_tag)    {        preg_match_all('/(src)=("[^"]*")/i',$img_tag, $img[$img_tag]);    }    return trim($img[$img_tag][2][0], '"');}// create an array of the feed itemsinclude_once(ABSPATH . WPINC . '/feed.php');$feed = fetch_feed('http://123.com/tammyhart/shots.rss');$feed = $feed->get_items(0);$shots = array();foreach ( $feed as $item ) :$shots[$item->get_date('Ymd')] = array(    'id'    => $item->get_date('Ymd'),    'url'   => esc_url( $item->get_permalink() ),    'date'  => $item->get_date('Y-m-d H:i:s'),    'title' => esc_html( $item->get_title() ),    'image' => get_image($item->get_description())    );endforeach;// create posts from our arrayforeach ($shots as $shot) {    $shot_post = array(        'post_type'     => 'shot',        'post_status'   => 'publish',        'post_author'   => 1,        'post_title'    => $shot['title'],        'post_date'     => $shot['date']        );    $shot_post_meta = array(        'link_url'  => $shot['url'],        'image'     => $shot['image']        );    $posts = get_posts(        array(            'post_type' => 'shot',            'meta_key'  => 'link_url',            'meta_value'=> $shot_post_meta['link_url']            )        );    if (count($posts) == 0) {        $post_id = wp_insert_post($shot_post);        add_post_meta($post_id, 'link_url', $shot_post_meta['link_url'], true);        add_post_meta($post_id, 'image', $shot_post_meta['image'], true);    }}?>

修改第66行的”http://123.com/tammyhart/shots.rss“为准备抓取文章站点的RSS地址，还可以修改第80行后的”shot“为你所用主题自定义分类法名称，抓取的文章会自动添加到该分类法中。

上述代码中并没有抓取文章内容的功能，仅供参考学习之用。