PHP wxr_post_taxonomy函数代码示例

//.........这里部分代码省略.........
		<wp:status><?php 
                        echo $post->post_status;
                        ?>
</wp:status>
		<wp:post_parent><?php 
                        echo $post->post_parent;
                        ?>
</wp:post_parent>
		<wp:menu_order><?php 
                        echo $post->menu_order;
                        ?>
</wp:menu_order>
		<wp:post_type><?php 
                        echo $post->post_type;
                        ?>
</wp:post_type>
		<wp:post_password><?php 
                        echo $post->post_password;
                        ?>
</wp:post_password>
		<wp:is_sticky><?php 
                        echo $is_sticky;
                        ?>
</wp:is_sticky>
<?php 
                        if ($post->post_type == 'attachment') {
                            ?>
		<wp:attachment_url><?php 
                            echo wp_get_attachment_url($post->ID);
                            ?>
</wp:attachment_url>
<?php 
                        }
                        wxr_post_taxonomy();
                        $postmeta = $wpdb->get_results($wpdb->prepare("SELECT * FROM {$wpdb->postmeta} WHERE post_id = %d", $post->ID));
                        foreach ($postmeta as $meta) {
                            if (apply_filters('wxr_export_skip_postmeta', false, $meta->meta_key, $meta)) {
                                continue;
                            }
                            ?>
		<wp:postmeta>
			<wp:meta_key><?php 
                            echo $meta->meta_key;
                            ?>
</wp:meta_key>
			<wp:meta_value><?php 
                            echo wxr_cdata($meta->meta_value);
                            ?>
</wp:meta_value>
		</wp:postmeta>
<?php 
                        }
                        if (false === $args['skip_comments']) {
                            $comments = $wpdb->get_results($wpdb->prepare("SELECT * FROM {$wpdb->comments} WHERE comment_post_ID = %d AND comment_approved <> 'spam'", $post->ID));
                            foreach ($comments as $c) {
                                ?>
		<wp:comment>
			<wp:comment_id><?php 
                                echo $c->comment_ID;
                                ?>
</wp:comment_id>
			<wp:comment_author><?php 
                                echo wxr_cdata($c->comment_author);
                                ?>
</wp:comment_author>
			<wp:comment_author_email><?php 

function export_wp($author = '')
{
    global $wpdb, $post_ids, $post;
    do_action('export_wp');
    $filename = 'wordpress.' . date('Y-m-d') . '.xml';
    header('Content-Description: File Transfer');
    header("Content-Disposition: attachment; filename={$filename}");
    header('Content-Type: text/xml; charset=' . get_option('blog_charset'), true);
    $where = '';
    if ($author and $author != 'all') {
        $author_id = (int) $author;
        $where = $wpdb->prepare(" WHERE post_author = %d ", $author_id);
    }
    // grab a snapshot of post IDs, just in case it changes during the export
    $post_ids = $wpdb->get_col("SELECT ID FROM {$wpdb->posts} {$where} ORDER BY post_date_gmt ASC");
    $categories = (array) get_categories('get=all');
    $tags = (array) get_tags('get=all');
    function wxr_missing_parents($categories)
    {
        if (!is_array($categories) || empty($categories)) {
            return array();
        }
        foreach ($categories as $category) {
            $parents[$category->term_id] = $category->parent;
        }
        $parents = array_unique(array_diff($parents, array_keys($parents)));
        if ($zero = array_search('0', $parents)) {
            unset($parents[$zero]);
        }
        return $parents;
    }
    while ($parents = wxr_missing_parents($categories)) {
        $found_parents = get_categories("include=" . join(', ', $parents));
        if (is_array($found_parents) && count($found_parents)) {
            $categories = array_merge($categories, $found_parents);
        } else {
            break;
        }
    }
    // Put them in order to be inserted with no child going before its parent
    $pass = 0;
    $passes = 1000 + count($categories);
    while (($cat = array_shift($categories)) && ++$pass < $passes) {
        if ($cat->parent == 0 || isset($cats[$cat->parent])) {
            $cats[$cat->term_id] = $cat;
        } else {
            $categories[] = $cat;
        }
    }
    unset($categories);
    function wxr_cdata($str)
    {
        if (seems_utf8($str) == false) {
            $str = utf8_encode($str);
        }
        // $str = ent2ncr(wp_specialchars($str));
        $str = "<![CDATA[{$str}" . (substr($str, -1) == ']' ? ' ' : '') . "]]>";
        return $str;
    }
    function wxr_site_url()
    {
        global $current_site;
        // mu: the base url
        if (isset($current_site->domain)) {
            return 'http://' . $current_site->domain . $current_site->path;
        } else {
            return get_bloginfo_rss('url');
        }
    }
    function wxr_cat_name($c)
    {
        if (empty($c->name)) {
            return;
        }
        echo '<wp:cat_name>' . wxr_cdata($c->name) . '</wp:cat_name>';
    }
    function wxr_category_description($c)
    {
        if (empty($c->description)) {
            return;
        }
        echo '<wp:category_description>' . wxr_cdata($c->description) . '</wp:category_description>';
    }
    function wxr_tag_name($t)
    {
        if (empty($t->name)) {
            return;
        }
        echo '<wp:tag_name>' . wxr_cdata($t->name) . '</wp:tag_name>';
    }
    function wxr_tag_description($t)
    {
        if (empty($t->description)) {
            return;
        }
        echo '<wp:tag_description>' . wxr_cdata($t->description) . '</wp:tag_description>';
    }
    function wxr_post_taxonomy()
    {
        $categories = get_the_category();
//.........这里部分代码省略.........

//.........这里部分代码省略.........
            echo '<wp:author_login>' . wxr_cdata($author->user_login) . '</wp:author_login>';
            echo '<wp:author_email>' . wxr_cdata($author->user_email) . '</wp:author_email>';
            echo '<wp:author_display_name>' . wxr_cdata($author->display_name) . '</wp:author_display_name>';
            echo '<wp:author_first_name>' . wxr_cdata($author->first_name) . '</wp:author_first_name>';
            echo '<wp:author_last_name>' . wxr_cdata($author->last_name) . '</wp:author_last_name>';
            echo "</wp:author>\n";
        }
    }
    /**
     * Ouput all navigation menu terms
     *
     * @since 3.1.0
     */
    function wxr_nav_menu_terms()
    {
        $nav_menus = wp_get_nav_menus();
        if (empty($nav_menus) || !is_array($nav_menus)) {
            return;
        }
        foreach ($nav_menus as $menu) {
            echo "\t<wp:term>";
            echo '<wp:term_id>' . intval($menu->term_id) . '</wp:term_id>';
            echo '<wp:term_taxonomy>nav_menu</wp:term_taxonomy>';
            echo '<wp:term_slug>' . wxr_cdata($menu->slug) . '</wp:term_slug>';
            wxr_term_name($menu);
            echo "</wp:term>\n";
        }
    }
    /**
     * Output list of taxonomy terms, in XML tag format, associated with a post
     *
     * @since 2.3.0
     */
    function wxr_post_taxonomy()
    {
        $post = get_post();
        $taxonomies = get_object_taxonomies($post->post_type);
        if (empty($taxonomies)) {
            return;
        }
        $terms = wp_get_object_terms($post->ID, $taxonomies);
        foreach ((array) $terms as $term) {
            echo "\t\t<category domain=\"{$term->taxonomy}\" nicename=\"{$term->slug}\">" . wxr_cdata($term->name) . "</category>\n";
        }
    }
    /**
     *
     * @param bool   $return_me
     * @param string $meta_key
     * @return bool
     */
    function wxr_filter_postmeta($return_me, $meta_key)
    {
        if ('_edit_lock' == $meta_key) {
            $return_me = true;
        }
        return $return_me;
    }
    add_filter('wxr_export_skip_postmeta', 'wxr_filter_postmeta', 10, 2);
    echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . "\" ?>\n";
    ?>
<!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your site. -->
<!-- It contains information about your site's posts, pages, comments, categories, and other content. -->
<!-- You may use this file to transfer that content from one site to another. -->
<!-- This file is not intended to serve as a complete backup of your site. -->

//.........这里部分代码省略.........
        foreach ($authors as $author) {
            echo "\t<wp:author>";
            echo '<wp:author_id>' . $author->ID . '</wp:author_id>';
            echo '<wp:author_login>' . $author->user_login . '</wp:author_login>';
            echo '<wp:author_email>' . $author->user_email . '</wp:author_email>';
            echo '<wp:author_display_name>' . wxr_cdata($author->display_name) . '</wp:author_display_name>';
            echo '<wp:author_first_name>' . wxr_cdata($author->user_firstname) . '</wp:author_first_name>';
            echo '<wp:author_last_name>' . wxr_cdata($author->user_lastname) . '</wp:author_last_name>';
            echo "</wp:author>\n";
        }
    }
    /**
     * Ouput all navigation menu terms
     *
     * @since 3.1.0
     */
    function wxr_nav_menu_terms()
    {
        $nav_menus = wp_get_nav_menus();
        if (empty($nav_menus) || !is_array($nav_menus)) {
            return;
        }
        foreach ($nav_menus as $menu) {
            echo "\t<wp:term><wp:term_id>{$menu->term_id}</wp:term_id><wp:term_taxonomy>nav_menu</wp:term_taxonomy><wp:term_slug>{$menu->slug}</wp:term_slug>";
            wxr_term_name($menu);
            echo "</wp:term>\n";
        }
    }
    /**
     * Output list of taxonomy terms, in XML tag format, associated with a post
     *
     * @since 2.3.0
     */
    function wxr_post_taxonomy()
    {
        $post = get_post();
        $taxonomies = get_object_taxonomies($post->post_type);
        if (empty($taxonomies)) {
            return;
        }
        $terms = wp_get_object_terms($post->ID, $taxonomies);
        foreach ((array) $terms as $term) {
            echo "\t\t<category domain=\"{$term->taxonomy}\" nicename=\"{$term->slug}\">" . wxr_cdata($term->name) . "</category>\n";
        }
    }
    function wxr_filter_postmeta($return_me, $meta_key)
    {
        if ('_edit_lock' == $meta_key) {
            $return_me = true;
        }
        return $return_me;
    }
    add_filter('wxr_export_skip_postmeta', 'wxr_filter_postmeta', 10, 2);
    echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . "\" ?>\n";
    ?>
<!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your site. -->
<!-- It contains information about your site's posts, pages, comments, categories, and other content. -->
<!-- You may use this file to transfer that content from one site to another. -->
<!-- This file is not intended to serve as a complete backup of your site. -->

<!-- To import this information into a WordPress site follow these steps: -->
<!-- 1. Log in to that site as an administrator. -->
<!-- 2. Go to Tools: Import in the WordPress admin panel. -->
<!-- 3. Install the "WordPress" importer from the list. -->
<!-- 4. Activate & Run Importer. -->
<!-- 5. Upload this file using the form provided on that page. -->

//.........这里部分代码省略.........
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param object $t Tag Object
     */
    function wxr_tag_name($t)
    {
        if (empty($t->name)) {
            return;
        }
        echo '<wp:tag_name>' . wxr_cdata($t->name) . '</wp:tag_name>';
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param object $t Tag Object
     */
    function wxr_tag_description($t)
    {
        if (empty($t->description)) {
            return;
        }
        echo '<wp:tag_description>' . wxr_cdata($t->description) . '</wp:tag_description>';
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     */
    function wxr_post_taxonomy()
    {
        $categories = get_the_category();
        $tags = get_the_tags();
        $the_list = '';
        $filter = 'rss';
        if (!empty($categories)) {
            foreach ((array) $categories as $category) {
                $cat_name = sanitize_term_field('name', $category->name, $category->term_id, 'category', $filter);
                // for backwards compatibility
                $the_list .= "\n\t\t<category><![CDATA[{$cat_name}]]></category>\n";
                // forwards compatibility: use a unique identifier for each cat to avoid clashes
                // http://trac.wordpress.org/ticket/5447
                $the_list .= "\n\t\t<category domain=\"category\" nicename=\"{$category->slug}\"><![CDATA[{$cat_name}]]></category>\n";
            }
        }
        if (!empty($tags)) {
            foreach ((array) $tags as $tag) {
                $tag_name = sanitize_term_field('name', $tag->name, $tag->term_id, 'post_tag', $filter);
                $the_list .= "\n\t\t<category domain=\"tag\"><![CDATA[{$tag_name}]]></category>\n";
                // forwards compatibility as above
                $the_list .= "\n\t\t<category domain=\"tag\" nicename=\"{$tag->slug}\"><![CDATA[{$tag_name}]]></category>\n";
            }
        }
        echo $the_list;
    }
    // start catching output
    ob_start();
    echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . '"?' . ">\n";
    ?>
<!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your blog. -->
<!-- It contains information about your blog's posts, comments, and categories. -->
<!-- You may use this file to transfer that content from one site to another. -->

//.........这里部分代码省略.........
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param object $t Term Object
     */
    function wxr_term_name($t)
    {
        if (empty($t->name)) {
            return;
        }
        echo '<wp:term_name>' . wxr_cdata($t->name) . '</wp:term_name>';
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param object $t Term Object
     */
    function wxr_term_description($t)
    {
        if (empty($t->description)) {
            return;
        }
        echo '<wp:term_description>' . wxr_cdata($t->description) . '</wp:term_description>';
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     */
    function wxr_post_taxonomy()
    {
        $categories = get_the_category();
        $tags = get_the_tags();
        $the_list = '';
        $filter = 'rss';
        if (!empty($categories)) {
            foreach ((array) $categories as $category) {
                $cat_name = sanitize_term_field('name', $category->name, $category->term_id, 'category', $filter);
                // for backwards compatibility
                $the_list .= "\n\t\t<category><![CDATA[{$cat_name}]]></category>\n";
                // forwards compatibility: use a unique identifier for each cat to avoid clashes
                // http://trac.wordpress.org/ticket/5447
                $the_list .= "\n\t\t<category domain=\"category\" nicename=\"{$category->slug}\"><![CDATA[{$cat_name}]]></category>\n";
            }
        }
        if (!empty($tags)) {
            foreach ((array) $tags as $tag) {
                $tag_name = sanitize_term_field('name', $tag->name, $tag->term_id, 'post_tag', $filter);
                $the_list .= "\n\t\t<category domain=\"tag\"><![CDATA[{$tag_name}]]></category>\n";
                // forwards compatibility as above
                $the_list .= "\n\t\t<category domain=\"tag\" nicename=\"{$tag->slug}\"><![CDATA[{$tag_name}]]></category>\n";
            }
        }
        echo $the_list;
    }
    echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . '"?' . ">\n";
    ?>
<!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your blog. -->
<!-- It contains information about your blog's posts, comments, and categories. -->
<!-- You may use this file to transfer that content from one site to another. -->
<!-- This file is not intended to serve as a complete backup of your blog. -->

//.........这里部分代码省略.........
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param object $t Term Object
     */
    function wxr_term_name($t)
    {
        if (empty($t->name)) {
            return;
        }
        echo '<wp:term_name>' . wxr_cdata($t->name) . '</wp:term_name>';
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param object $t Term Object
     */
    function wxr_term_description($t)
    {
        if (empty($t->description)) {
            return;
        }
        echo '<wp:term_description>' . wxr_cdata($t->description) . '</wp:term_description>';
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     */
    function wxr_post_taxonomy()
    {
        global $post;
        $the_list = '';
        $filter = 'rss';
        $taxonomies = get_object_taxonomies('post');
        $terms = wp_get_post_terms($post->ID, $taxonomies);
        foreach ((array) $terms as $term) {
            $domain = 'post_tag' == $term->taxonomy ? 'tag' : $term->taxonomy;
            $term_name = sanitize_term_field('name', $term->name, $term->term_id, $term->taxonomy, $filter);
            // Back compat.
            if ('category' == $term->taxonomy) {
                $the_list .= "\n\t\t<category><![CDATA[{$term_name}]]></category>\n";
            } elseif ('post_tag' == $term->taxonomy) {
                $the_list .= "\n\t\t<category domain=\"{$domain}\"><![CDATA[{$term_name}]]></category>\n";
            }
            // forwards compatibility as above
            $the_list .= "\n\t\t<category domain=\"{$domain}\" nicename=\"{$term->slug}\"><![CDATA[{$term_name}]]></category>\n";
        }
        echo $the_list;
    }
    echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . '"?' . ">\n";
    ?>
<!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your blog. -->
<!-- It contains information about your blog's posts, comments, and categories. -->
<!-- You may use this file to transfer that content from one site to another. -->
<!-- This file is not intended to serve as a complete backup of your blog. -->

<!-- To import this information into a WordPress blog follow these steps. -->
<!-- 1. Log in to that blog as an administrator. -->
<!-- 2. Go to Tools: Import in the blog's admin panels (or Manage: Import in older versions of WordPress). -->
<!-- 3. Choose "WordPress" from the list. -->
<!-- 4. Upload this file using the form provided on that page. -->

function export_wp()
{
    global $wpdb, $post_ids, $post;
    do_action('export_wp');
    $filename = 'wordpress.' . date('Y-m-d') . '.xml';
    // ограничения по кол-ву записей
    $limit = '';
    if (isset($_GET['limit_start']) and $_GET['limit_start'] and isset($_GET['limit_count']) and $_GET['limit_count']) {
        $limit_start = (int) $_GET['limit_start'];
        $limit_count = (int) $_GET['limit_count'];
        if ($limit_start and $limit_count) {
            $limit = ' LIMIT ' . $limit_start . ', ' . $limit_count;
            $filename = 'wp-' . $limit_start . '-' . ($limit_count + $limit_start) . '.xml';
        }
    }
    header('Content-Description: File Transfer');
    header("Content-Disposition: attachment; filename={$filename}");
    header('Content-Type: text/xml; charset=' . get_option('blog_charset'), true);
    $where = '';
    if (isset($_GET['author']) && $_GET['author'] != 'all') {
        $author_id = (int) $_GET['author'];
        $where = " WHERE post_author = '{$author_id}' and post_status != 'inherit'";
    } else {
        $where = " WHERE post_status != 'inherit'";
    }
    // grab a snapshot of post IDs, just in case it changes during the export
    $post_ids = $wpdb->get_col("SELECT ID FROM {$wpdb->posts} {$where} ORDER BY post_date_gmt ASC{$limit}");
    $categories = (array) get_categories('get=all');
    $tags = (array) get_tags('get=all');
    function wxr_missing_parents($categories)
    {
        if (!is_array($categories) || empty($categories)) {
            return array();
        }
        foreach ($categories as $category) {
            $parents[$category->term_id] = $category->parent;
        }
        $parents = array_unique(array_diff($parents, array_keys($parents)));
        if ($zero = array_search('0', $parents)) {
            unset($parents[$zero]);
        }
        return $parents;
    }
    while ($parents = wxr_missing_parents($categories)) {
        $found_parents = get_categories("include=" . join(', ', $parents));
        if (is_array($found_parents) && count($found_parents)) {
            $categories = array_merge($categories, $found_parents);
        } else {
            break;
        }
    }
    // Put them in order to be inserted with no child going before its parent
    $pass = 0;
    $passes = 1000 + count($categories);
    while (($cat = array_shift($categories)) && ++$pass < $passes) {
        if ($cat->parent == 0 || isset($cats[$cat->parent])) {
            $cats[$cat->term_id] = $cat;
        } else {
            $categories[] = $cat;
        }
    }
    unset($categories);
    function wxr_cdata($str)
    {
        if (seems_utf8($str) == false) {
            $str = utf8_encode($str);
        }
        // $str = ent2ncr(wp_specialchars($str));
        $str = "<![CDATA[{$str}" . (substr($str, -1) == ']' ? ' ' : '') . "]]>";
        return $str;
    }
    function wxr_cat_name($c)
    {
        if (empty($c->name)) {
            return;
        }
        echo '<wp:cat_name>' . wxr_cdata($c->name) . '</wp:cat_name>';
    }
    function wxr_category_description($c)
    {
        if (empty($c->description)) {
            return;
        }
        echo '<wp:category_description>' . wxr_cdata($c->description) . '</wp:category_description>';
    }
    function wxr_tag_name($t)
    {
        if (empty($t->name)) {
            return;
        }
        echo '<wp:tag_name>' . wxr_cdata($t->name) . '</wp:tag_name>';
    }
    function wxr_tag_description($t)
    {
        if (empty($t->description)) {
            return;
        }
        echo '<wp:tag_description>' . wxr_cdata($t->description) . '</wp:tag_description>';
    }
    function wxr_post_taxonomy()
//.........这里部分代码省略.........

echo $post->post_password;
?>
</wp:post_password>
    <wp:post_author_id><?php 
echo $post->post_author;
?>
</wp:post_author_id>
	<wp:is_sticky><?php 
echo $is_sticky;
?>
</wp:is_sticky>
	<?php 
lpr_export_attachment($post);
?>
	<?php 
wxr_post_taxonomy();
?>
	<?php 
if (!in_array($post->post_author, $_lpr_course_author_ids)) {
    $_lpr_course_author_ids[] = $post->post_author;
}
$postmeta = $wpdb->get_results($wpdb->prepare("SELECT * FROM {$wpdb->postmeta} WHERE post_id = %d", $post->ID));
foreach ($postmeta as $meta) {
    if (apply_filters('wxr_export_skip_postmeta', false, $meta->meta_key, $meta)) {
        continue;
    }
    do_action('lpr_export_postmeta', $meta->meta_key, $meta);
    switch ($meta->meta_key) {
        case '_lpr_course_prerequisite':
            continue;
            $_lpr_course_prerequisite[] = $meta->meta_value;

//.........这里部分代码省略.........
            foreach ($authors as $author) {
                echo "\t<wp:author>";
                echo '<wp:author_id>' . $author->ID . '</wp:author_id>';
                echo '<wp:author_login>' . $author->user_login . '</wp:author_login>';
                echo '<wp:author_email>' . $author->user_email . '</wp:author_email>';
                echo '<wp:author_display_name>' . wxr_cdata($author->display_name) . '</wp:author_display_name>';
                echo '<wp:author_first_name>' . wxr_cdata($author->user_firstname) . '</wp:author_first_name>';
                echo '<wp:author_last_name>' . wxr_cdata($author->user_lastname) . '</wp:author_last_name>';
                echo "</wp:author>\n";
            }
        }
        /**
         * Ouput all navigation menu terms
         *
         * @since 3.1.0
         */
        function wxr_nav_menu_terms()
        {
            $nav_menus = wp_get_nav_menus();
            if (empty($nav_menus) || !is_array($nav_menus)) {
                return;
            }
            foreach ($nav_menus as $menu) {
                echo "\t<wp:term><wp:term_id>{$menu->term_id}</wp:term_id><wp:term_taxonomy>nav_menu</wp:term_taxonomy><wp:term_slug>{$menu->slug}</wp:term_slug>";
                wxr_term_name($menu);
                echo "</wp:term>\n";
            }
        }
        /**
         * Output list of taxonomy terms, in XML tag format, associated with a post
         *
         * @since 2.3.0
         */
        function wxr_post_taxonomy()
        {
            global $post;
            $taxonomies = get_object_taxonomies($post->post_type);
            if (empty($taxonomies)) {
                return;
            }
            $terms = wp_get_object_terms($post->ID, $taxonomies);
            foreach ((array) $terms as $term) {
                echo "\t\t<category domain=\"{$term->taxonomy}\" nicename=\"{$term->slug}\">" . wxr_cdata($term->name) . "</category>\n";
            }
        }
        function wxr_filter_postmeta($return_me, $meta_key)
        {
            // We ignore the attachment metadata on import so no point in exporting it
            if (in_array($meta_key, array('_edit_lock', '_wp_attachment_metadata', '_wp_attached_file'))) {
                $return_me = true;
            }
            return $return_me;
        }
        add_filter('wxr_export_skip_postmeta', 'wxr_filter_postmeta', 10, 2);
        // now we can use the functions we need.
        $this->debug_msg("Initialized all functions we need");
        /**
         * This is mostly the original code of export_wp defined in wp-admin/includes/export.php
         */
        $defaults = array('post_type' => 'all', 'author' => false, 'category' => false, 'start_date' => false, 'end_date' => false, 'status' => false, 'skip_comments' => false, 'file_item_count' => 1000);
        $args = wp_parse_args($args, $defaults);
        $this->debug_msg("Exporting with export_wp with arguments: " . var_export($args, true));
        do_action('export_wp');
        if ('all' != $args['post_type'] && post_type_exists($args['post_type'])) {
            $ptype = get_post_type_object($args['post_type']);
            if (!$ptype->can_export) {

//.........这里部分代码省略.........
     */
    function wxr_nav_menu_terms()
    {
        $nav_menus = wp_get_nav_menus();
        if (empty($nav_menus) || !is_array($nav_menus)) {
            return;
        }
        foreach ($nav_menus as $menu) {
            echo "\t<wp:term><wp:term_id>{$menu->term_id}</wp:term_id><wp:term_taxonomy>nav_menu</wp:term_taxonomy><wp:term_slug>{$menu->slug}</wp:term_slug>";
            wxr_term_name($menu);
            echo "</wp:term>\n";
        }
    }
    function me_wxr_nav_menu_item_terms_and_posts(&$post_ids)
    {
        $posts_to_add = array();
        foreach ($post_ids as $post_id) {
            if (($type = get_post_meta($post_id, '_menu_item_type', true)) == 'taxonomy') {
                $term = get_term(get_post_meta($post_id, '_menu_item_object_id', true), $tax = get_post_meta($post_id, '_menu_item_object', true));
                echo "\t<wp:term><wp:term_id>{$term->term_id}</wp:term_id><wp:term_taxonomy>{$tax}</wp:term_taxonomy><wp:term_slug>{$term->slug}</wp:term_slug>";
                wxr_term_name($term);
                echo "</wp:term>\n";
            } elseif ($type == 'post_type' && in_array(get_post_meta($post_id, '_menu_item_object', true), array('post', 'page'))) {
                $posts_to_add[] = get_post_meta($post_id, '_menu_item_object_id', true);
            }
        }
        $post_ids = array_merge($posts_to_add, $post_ids);
    }
    /**
     * Output list of taxonomy terms, in XML tag format, associated with a post
     *
     * @since 2.3.0
     */
    function wxr_post_taxonomy()
    {
        global $post;
        $taxonomies = get_object_taxonomies($post->post_type);
        if (empty($taxonomies)) {
            return;
        }
        $terms = wp_get_object_terms($post->ID, $taxonomies);
        foreach ((array) $terms as $term) {
            echo "\t\t<category domain=\"{$term->taxonomy}\" nicename=\"{$term->slug}\">" . wxr_cdata($term->name) . "</category>\n";
        }
    }
    echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . "\" ?>\n";
    ?>
<!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your site. -->
<!-- It contains information about your site's posts, pages, comments, categories, and other content. -->
<!-- You may use this file to transfer that content from one site to another. -->
<!-- This file is not intended to serve as a complete backup of your site. -->

<!-- To import this information into a WordPress site follow these steps: -->
<!-- 1. Log in to that site as an administrator. -->
<!-- 2. Go to Tools: Import in the WordPress admin panel. -->
<!-- 3. Install the "WordPress" importer from the list. -->
<!-- 4. Activate & Run Importer. -->
<!-- 5. Upload this file using the form provided on that page. -->
<!-- 6. You will first be asked to map the authors in this export file to users -->
<!--    on the site. For each author, you may choose to map to an -->
<!--    existing user on the site or to create a new user. -->
<!-- 7. WordPress will then import each of the posts, pages, comments, categories, etc. -->
<!--    contained in this file into your site. -->

<?php 
    the_generator('export');

//.........这里部分代码省略.........
</content:encoded>
					<excerpt:encoded><?php 
                    echo wxr_cdata(apply_filters('the_excerpt_export', $post->post_excerpt));
                    ?>
</excerpt:encoded>
					<wp:post_id><?php 
                    echo $post->ID;
                    ?>
</wp:post_id>
					<wp:post_date><?php 
                    echo $post->post_date;
                    ?>
</wp:post_date>
					<wp:post_date_gmt><?php 
                    echo $post->post_date_gmt;
                    ?>
</wp:post_date_gmt>
					<wp:comment_status><?php 
                    echo $post->comment_status;
                    ?>
</wp:comment_status>
					<wp:ping_status><?php 
                    echo $post->ping_status;
                    ?>
</wp:ping_status>
					<wp:post_name><?php 
                    echo $post->post_name;
                    ?>
</wp:post_name>
					<wp:status><?php 
                    echo $post->post_status;
                    ?>
</wp:status>
					<wp:post_parent><?php 
                    echo $post->post_parent;
                    ?>
</wp:post_parent>
					<wp:menu_order><?php 
                    echo $post->menu_order;
                    ?>
</wp:menu_order>
					<wp:post_type><?php 
                    echo $post->post_type;
                    ?>
</wp:post_type>
					<wp:post_password><?php 
                    echo $post->post_password;
                    ?>
</wp:post_password>
					<wp:is_sticky><?php 
                    echo $is_sticky;
                    ?>
</wp:is_sticky>
			<?php 
                    if ($post->post_type == 'attachment') {
                        ?>
					<wp:attachment_url><?php 
                        echo wp_get_attachment_url($post->ID);
                        ?>
</wp:attachment_url>
			<?php 
                    }
                    ?>
			<?php 
                    wxr_post_taxonomy();
                    ?>
			<?php 
                    $postmeta = $wpdb->get_results($wpdb->prepare("SELECT * FROM {$wpdb->postmeta} WHERE post_id = %d", $post->ID));
                    foreach ($postmeta as $meta) {
                        if (apply_filters('wxr_export_skip_postmeta', false, $meta->meta_key, $meta)) {
                            continue;
                        }
                        ?>
					<wp:postmeta>
						<wp:meta_key><?php 
                        echo $meta->meta_key;
                        ?>
</wp:meta_key>
						<wp:meta_value><?php 
                        echo wxr_cdata($meta->meta_value);
                        ?>
</wp:meta_value>
					</wp:postmeta>
			<?php 
                    }
                    ?>
			
				</item>
			<?php 
                }
            }
        }
        ?>
			<?php 
        do_action('rss2_head');
        ?>
			</channel>
			</rss><?php 
        die;
    }