PHP wxr_site_url函数代码示例

function dsq_export_wp()
{
    global $wpdb, $posts, $post, $wp_version;
    global $dsq_api;
    $filename = dsq_get_temp_dir() . 'disqus-wordpress.' . date('Y-m-d') . '.xml';
    $fp = fopen($filename, 'w');
    ob_start();
    $where = '';
    if (isset($_GET['author']) && $_GET['author'] != 'all') {
        $author_id = (int) $_GET['author'];
        $where = " WHERE post_author = '{$author_id}' ";
    }
    $posts = $wpdb->get_results("SELECT * FROM {$wpdb->posts} {$where} ORDER BY post_date_gmt ASC");
    function wxr_site_url()
    {
        global $current_site;
        // mu: the base url
        if (isset($current_site->domain)) {
            return 'http://' . $current_site->domain . $current_site->path;
        } else {
            return get_bloginfo_rss('url');
        }
    }
    function wxr_cdata($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($c->cat_name)) {
            return;
        }
        echo '<wp:cat_name>' . wxr_cdata($c->cat_name) . '</wp:cat_name>';
    }
    function wxr_category_description($c)
    {
        if (empty($c->category_description)) {
            return;
        }
        echo '<wp:category_description>' . wxr_cdata($c->category_description) . '</wp:category_description>';
    }
    print '<?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 into that blog as an administrator.
		2.	Go to Manage > Import in the blog's admin.
		3.	Choose "WordPress" from the list of importers.
		4.	Upload this file using the form provided on that page.
		5.	You will first be asked to map the authors in this export file to users
			on the blog. For each author, you may choose to map an existing user on
			the blog or to create a new user.
		6.	WordPress will then import each of the posts, comments, and categories
			contained in this file onto your blog.
	-->

	<!-- generator="wordpress/<?php 
    bloginfo_rss('version');
    ?>
" created="<?php 
    echo date('Y-m-d H:i');
    ?>
"-->
	<rss version="2.0"
		xmlns:content="http://purl.org/rss/1.0/modules/content/"
		xmlns:wfw="http://wellformedweb.org/CommentAPI/"
		xmlns:dc="http://purl.org/dc/elements/1.1/"
		xmlns:wp="http://wordpress.org/export/<?php 
    echo WXR_VERSION;
    ?>
/"
	>

	<channel>
		<title><?php 
    bloginfo_rss('name');
    ?>
</title>
		<link><?php 
    bloginfo_rss('url');
    ?>
</link>
		<description><?php 
    bloginfo_rss("description");
    ?>
</description>
		<pubDate><?php 
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        while ($t = array_shift($custom_terms)) {
            if ($t->parent == 0 || isset($terms[$t->parent])) {
                $terms[$t->term_id] = $t;
            } else {
                $custom_terms[] = $t;
            }
        }
        unset($categories, $custom_taxonomies, $custom_terms);
    }
    /**
     * Wrap given string in XML CDATA tag.
     *
     * @since 2.1.0
     *
     * @param string $str String to wrap in XML CDATA tag.
     * @return string
     */
    function wxr_cdata($str)
    {
        if (!seems_utf8($str)) {
            $str = utf8_encode($str);
        }
        // $str = ent2ncr(esc_html($str));
        $str = '<![CDATA[' . str_replace(']]>', ']]]]><![CDATA[>', $str) . ']]>';
        return $str;
    }
    /**
     * Return the URL of the site
     *
     * @since 2.5.0
     *
     * @return string Site URL.
     */
    function wxr_site_url()
    {
        // Multisite: the base URL.
        if (is_multisite()) {
            return network_home_url();
        } else {
            return get_bloginfo_rss('url');
        }
    }
    /**
     * Output a cat_name XML tag from a given category object
     *
     * @since 2.1.0
     *
     * @param object $category Category Object
     */
    function wxr_cat_name($category)
    {
        if (empty($category->name)) {
            return;
        }
        echo '<wp:cat_name>' . wxr_cdata($category->name) . '</wp:cat_name>';
    }
    /**
     * Output a category_description XML tag from a given category object
     *
     * @since 2.1.0
     *
     * @param object $category Category Object
     */
    function wxr_category_description($category)
    {
        if (empty($category->description)) {

//.........这里部分代码省略.........
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:wp="http://wordpress.org/export/<?php 
            echo WXR_VERSION;
            ?>
/"
>

<channel>
	<title><?php 
            bloginfo_rss('name');
            ?>
</title>
	<link><?php 
            bloginfo_rss('url');
            ?>
</link>
	<description><?php 
            bloginfo_rss('description');
            ?>
</description>
	<pubDate><?php 
            echo date('D, d M Y H:i:s +0000');
            ?>
</pubDate>
	<language><?php 
            echo get_option('rss_language');
            ?>
</language>
	<wp:wxr_version><?php 
            echo WXR_VERSION;
            ?>
</wp:wxr_version>
	<wp:base_site_url><?php 
            echo wxr_site_url();
            ?>
</wp:base_site_url>
	<wp:base_blog_url><?php 
            bloginfo_rss('url');
            ?>
</wp:base_blog_url>

<?php 
            wxr_authors_list();
            ?>

<?php 
            foreach ($cats as $c) {
                ?>
	<wp:category><wp:term_id><?php 
                echo $c->term_id;
                ?>
</wp:term_id><wp:category_nicename><?php 
                echo $c->slug;
                ?>
</wp:category_nicename><wp:category_parent><?php 
                echo $c->parent ? $cats[$c->parent]->slug : '';
                ?>
</wp:category_parent><?php 
                wxr_cat_name($c);
                wxr_category_description($c);
                ?>
</wp:category>
<?php 
            }
            foreach ($tags as $t) {
                ?>

function dsq_export_wp($posts)
{
    global $wpdb;
    $categories = (array) get_categories('get=all');
    $tags = (array) get_tags('get=all');
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param unknown_type $categories
     */
    function wxr_missing_parents($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);
    /**
     * Place string in CDATA tag.
     *
     * @since unknown
     *
     * @param string $str String to place in XML CDATA tag.
     */
    function wxr_cdata($str)
    {
        if (seems_utf8($str) == false) {
            $str = utf8_encode($str);
        }
        // $str = ent2ncr(esc_html($str));
        $str = "<![CDATA[{$str}" . (substr($str, -1) == ']' ? ' ' : '') . "]]>";
        return $str;
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @return string Site URL.
     */
    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');
        }
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param object $c Category Object
     */
    function wxr_cat_name($c)
    {
        if (empty($c->name)) {
            return;
        }
        echo '<wp:cat_name>' . wxr_cdata($c->name) . '</wp:cat_name>';
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param object $c Category Object
     */
    function wxr_category_description($c)
//.........这里部分代码省略.........

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.........
                if ($t->parent == 0 || isset($terms[$t->parent])) {
                    $terms[$t->term_id] = $t;
                } else {
                    $custom_terms[] = $t;
                }
            }
            unset($categories, $custom_taxonomies, $custom_terms);
        }
    }
    /**
     * Wrap given string in XML CDATA tag.
     *
     * @since 2.1.0
     *
     * @param string $str String to wrap in XML CDATA tag.
     * @return string
     */
    function wxr_cdata($str)
    {
        if (seems_utf8($str) == false) {
            $str = utf8_encode($str);
        }
        // $str = ent2ncr(esc_html($str));
        $str = '<![CDATA[' . str_replace(']]>', ']]]]><![CDATA[>', $str) . ']]>';
        return $str;
    }
    /**
     * Return the URL of the site
     *
     * @since 2.5.0
     *
     * @return string Site URL.
     */
    function wxr_site_url()
    {
        // ms: the base url
        if (is_multisite()) {
            return network_home_url();
        } else {
            return get_bloginfo_rss('url');
        }
    }
    /**
     * Output a cat_name XML tag from a given category object
     *
     * @since 2.1.0
     *
     * @param object $category Category Object
     */
    function wxr_cat_name($category)
    {
        if (empty($category->name)) {
            return;
        }
        echo '<wp:cat_name>' . wxr_cdata($category->name) . '</wp:cat_name>';
    }
    /**
     * Output a category_description XML tag from a given category object
     *
     * @since 2.1.0
     *
     * @param object $category Category Object
     */
    function wxr_category_description($category)
    {
        if (empty($category->description)) {

?>
</description>
	<pubDate><?php 
echo date('D, d M Y H:i:s +0000');
?>
</pubDate>
	<language><?php 
echo get_option('rss_language');
?>
</language>
	<wp:wxr_version><?php 
echo WXR_VERSION;
?>
</wp:wxr_version>
	<wp:base_site_url><?php 
echo wxr_site_url();
?>
</wp:base_site_url>
	<wp:base_blog_url><?php 
bloginfo_rss('url');
?>
</wp:base_blog_url>
<?php 
wxr_authors_list();
if ($my_options['acf_posts']) {
    global $wp_query, $wpdb, $post;
    $wp_query->in_the_loop = true;
    // Fake being in the loop.
    // create SQL with %d placeholders
    $where = 'WHERE ID IN (' . substr(str_repeat('%d,', count($my_options['acf_posts'])), 0, -1) . ')';
    // now prepare the SQL based on the %d + $_POST data

/**
 * {@internal Missing Short Description}}
 *
 * @since unknown
 *
 * @param unknown_type $author
 */
function export_wp($author = '')
{
    global $wpdb, $post_ids, $post, $wp_taxonomies;
    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');
    $custom_taxonomies = $wp_taxonomies;
    unset($custom_taxonomies['category']);
    unset($custom_taxonomies['post_tag']);
    unset($custom_taxonomies['link_category']);
    $custom_taxonomies = array_keys($custom_taxonomies);
    $terms = (array) get_terms($custom_taxonomies, 'get=all');
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param unknown_type $categories
     */
    function wxr_missing_parents($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);
    /**
     * Place string in CDATA tag.
     *
     * @since unknown
     *
     * @param string $str String to place in XML CDATA tag.
     */
    function wxr_cdata($str)
    {
        if (seems_utf8($str) == false) {
            $str = utf8_encode($str);
        }
        // $str = ent2ncr(esc_html($str));
        $str = "<![CDATA[{$str}" . (substr($str, -1) == ']' ? ' ' : '') . "]]>";
        return $str;
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @return string Site URL.
     */
    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 {
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    $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);
    /**
     * Place string in CDATA tag.
     *
     * @since unknown
     *
     * @param string $str String to place in XML CDATA tag.
     */
    function wxr_cdata($str)
    {
        if (seems_utf8($str) == false) {
            $str = utf8_encode($str);
        }
        // $str = ent2ncr(esc_html($str));
        $str = "<![CDATA[{$str}" . (substr($str, -1) == ']' ? ' ' : '') . "]]>";
        return $str;
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @return string Site URL.
     */
    function wxr_site_url()
    {
        global $current_site;
        // mu: the base url
        if (isset($current_site->domain)) {
            return network_home_url();
        } else {
            return get_bloginfo_rss('url');
        }
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param object $c Category Object
     */
    function wxr_cat_name($c)
    {
        if (empty($c->name)) {
            return;
        }
        echo '<wp:cat_name>' . wxr_cdata($c->name) . '</wp:cat_name>';
    }
    /**
     * {@internal Missing Short Description}}
     *
     * @since unknown
     *
     * @param object $c Category Object
     */
    function wxr_category_description($c)
    {

function export_categories_export()
{
define( 'WXR_VERSION', '1.2' );

	global $wpdb;

	$sitename = sanitize_key( get_bloginfo( 'name' ) );
	if ( ! empty($sitename) ) $sitename .= '.';
	$filename = $sitename . 'wordpress_categories.' . 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 );


	// get the requested terms ready, empty unless posts filtered by category or all content
	$cats =  $terms = array();
 {
		$categories = (array) get_categories( array( 'get' => 'all' ) );

		$custom_taxonomies = get_taxonomies( array( '_builtin' => false ) );
		$custom_terms = (array) get_terms( $custom_taxonomies, array( 'get' => 'all' ) );

		// put categories in order with no child going before its parent
		while ( $cat = array_shift( $categories ) ) {
			if ( $cat->parent == 0 || isset( $cats[$cat->parent] ) )
				$cats[$cat->term_id] = $cat;
			else
				$categories[] = $cat;
		}

		// put terms in order with no child going before its parent
		while ( $t = array_shift( $custom_terms ) ) {
			if ( $t->parent == 0 || isset( $terms[$t->parent] ) )
				$terms[$t->term_id] = $t;
			else
				$custom_terms[] = $t;
		}

		unset( $categories, $custom_taxonomies, $custom_terms );
	}

	/**
	 * Wrap given string in XML CDATA tag.
	 *
	 * @since 2.1.0
	 *
	 * @param string $str String to wrap in XML CDATA tag.
	 * @return string
	 */
	function wxr_cdata( $str ) {
		if ( seems_utf8( $str ) == false )
			$str = utf8_encode( $str );

		// $str = ent2ncr(esc_html($str));
		$str = '<![CDATA[' . str_replace( ']]>', ']]]]><![CDATA[>', $str ) . ']]>';

		return $str;
	}
	/**
	 * Return the URL of the site
	 *
	 * @since 2.5.0
	 *
	 * @return string Site URL.
	 */
function wxr_site_url() {
		// ms: the base url
		if ( is_multisite() )
			return network_home_url();
		// wp: the blog url
		else
			return get_bloginfo_rss( 'url' );
	}

	/**
	 * Output a cat_name XML tag from a given category object
	 *
	 * @since 2.1.0
	 *
	 * @param object $category Category Object
	 */
function wxr_cat_name( $category ) {
		if ( empty( $category->name ) )
			return;

		echo '<wp:cat_name>' . wxr_cdata( $category->name ) . '</wp:cat_name>';
	}

	/**
	 * Output a category_description XML tag from a given category object
	 *
	 * @since 2.1.0
	 *
	 * @param object $category Category Object
	 */
  	function wxr_category_description( $category ) {
		if ( empty( $category->description ) )
			return;

//.........这里部分代码省略.........

    private function export_wp($args = array())
    {
        global $wpdb, $post;
        /**
         * Wrap given string in XML CDATA tag.
         *
         * @since 2.1.0
         *
         * @param string $str String to wrap in XML CDATA tag.
         */
        function wxr_cdata($str)
        {
            if (seems_utf8($str) == false) {
                $str = utf8_encode($str);
            }
            // $str = ent2ncr(esc_html($str));
            $str = '<![CDATA[' . str_replace(']]>', ']]]]><![CDATA[>', $str) . ']]>';
            return $str;
        }
        /**
         * Return the URL of the site
         *
         * @since 2.5.0
         *
         * @return string Site URL.
         */
        function wxr_site_url()
        {
            // ms: the base url
            if (is_multisite()) {
                return network_home_url();
            } else {
                return get_bloginfo_rss('url');
            }
        }
        /**
         * Output a cat_name XML tag from a given category object
         *
         * @since 2.1.0
         *
         * @param object $category Category Object
         */
        function wxr_cat_name($category)
        {
            if (empty($category->name)) {
                return;
            }
            echo '<wp:cat_name>' . wxr_cdata($category->name) . '</wp:cat_name>';
        }
        /**
         * Output a category_description XML tag from a given category object
         *
         * @since 2.1.0
         *
         * @param object $category Category Object
         */
        function wxr_category_description($category)
        {
            if (empty($category->description)) {
                return;
            }
            echo '<wp:category_description>' . wxr_cdata($category->description) . '</wp:category_description>';
        }
        /**
         * Output a tag_name XML tag from a given tag object
         *
         * @since 2.3.0
         *
         * @param object $tag Tag Object
         */
        function wxr_tag_name($tag)
        {
            if (empty($tag->name)) {
                return;
            }
            echo '<wp:tag_name>' . wxr_cdata($tag->name) . '</wp:tag_name>';
        }
        /**
         * Output a tag_description XML tag from a given tag object
         *
         * @since 2.3.0
         *
         * @param object $tag Tag Object
         */
        function wxr_tag_description($tag)
        {
            if (empty($tag->description)) {
                return;
            }
            echo '<wp:tag_description>' . wxr_cdata($tag->description) . '</wp:tag_description>';
        }
        /**
         * Output a term_name XML tag from a given term object
         *
         * @since 2.9.0
         *
         * @param object $term Term Object
         */
        function wxr_term_name($term)
        {
//.........这里部分代码省略.........

/**
 * Generates the WXR export file for download - This is a rip of export_wp but supports only exporting menus and it's terms
 *
 *
 * @param array $args Filters defining what should be included in the export
 */
function me_export_wp($args = array())
{
    global $wpdb, $post;
    $sitename = sanitize_key(get_bloginfo('name'));
    if (!empty($sitename)) {
        $sitename .= '.';
    }
    $filename = $sitename . '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 = $wpdb->prepare("{$wpdb->posts}.post_type = %s", 'nav_menu_item');
    // grab a snapshot of post IDs, just in case it changes during the export
    $post_ids = $wpdb->get_col("SELECT ID FROM {$wpdb->posts} {$join} WHERE {$where}");
    /**
     * Wrap given string in XML CDATA tag.
     *
     * @since 2.1.0
     *
     * @param string $str String to wrap in XML CDATA tag.
     */
    function wxr_cdata($str)
    {
        if (seems_utf8($str) == false) {
            $str = utf8_encode($str);
        }
        // $str = ent2ncr(esc_html($str));
        $str = "<![CDATA[{$str}" . (substr($str, -1) == ']' ? ' ' : '') . "]]>";
        return $str;
    }
    /**
     * Return the URL of the site
     *
     * @since 2.5.0
     *
     * @return string Site URL.
     */
    function wxr_site_url()
    {
        // ms: the base url
        if (is_multisite()) {
            return network_home_url();
        } else {
            return get_bloginfo_rss('url');
        }
    }
    /**
     * Output a term_name XML tag from a given term object
     *
     * @since 2.9.0
     *
     * @param object $term Term Object
     */
    function wxr_term_name($term)
    {
        if (empty($term->name)) {
            return;
        }
        echo '<wp:term_name>' . wxr_cdata($term->name) . '</wp:term_name>';
    }
    /**
     * 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";
        }
    }
    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
//.........这里部分代码省略.........

//.........这里部分代码省略.........
				xmlns:dc="http://purl.org/dc/elements/1.1/"
				xmlns:wp="http://wordpress.org/export/<?php 
        echo WXR_VERSION;
        ?>
/"
			>
			
			<channel>
				<title><?php 
        bloginfo_rss('name');
        ?>
</title>
				<link><?php 
        bloginfo_rss('url');
        ?>
</link>
				<description><?php 
        bloginfo_rss('description');
        ?>
</description>
				<pubDate><?php 
        echo date('D, d M Y H:i:s +0000');
        ?>
</pubDate>
				<language><?php 
        bloginfo_rss('language');
        ?>
</language>
				<wp:wxr_version><?php 
        echo WXR_VERSION;
        ?>
</wp:wxr_version>
				<wp:base_site_url><?php 
        echo wxr_site_url();
        ?>
</wp:base_site_url>
				<wp:base_blog_url><?php 
        bloginfo_rss('url');
        ?>
</wp:base_blog_url>
			<?php 
        if ($post_ids) {
            global $wp_query;
            $wp_query->in_the_loop = true;
            // Fake being in the loop.
            // fetch 20 posts at a time rather than loading the entire table into memory
            while ($next_posts = array_splice($post_ids, 0, 20)) {
                $where = 'WHERE ID IN (' . join(',', $next_posts) . ')';
                $posts = $wpdb->get_results("SELECT * FROM {$wpdb->posts} {$where}");
                // Begin Loop
                foreach ($posts as $post) {
                    setup_postdata($post);
                    $is_sticky = is_sticky($post->ID) ? 1 : 0;
                    ?>
				<item>
					<?php 
                    /** This filter is documented in wp-includes/feed.php */
                    ?>
					<title><?php 
                    echo apply_filters('the_title_rss', $post->post_title);
                    ?>
</title>
					<link><?php 
                    the_permalink_rss();
                    ?>
</link>

?>
</description>
	<pubDate><?php 
echo date('D, d M Y H:i:s +0000');
?>
</pubDate>
	<language><?php 
echo esc_html(get_option('rss_language'));
?>
</language>
	<wp:wxr_version><?php 
echo esc_html(WXR_VERSION);
?>
</wp:wxr_version>
	<wp:base_site_url><?php 
echo esc_url(wxr_site_url());
?>
</wp:base_site_url>
	<wp:base_blog_url><?php 
bloginfo_rss('url');
?>
</wp:base_blog_url>
<?php 
wxr_authors_list();
if ($my_options['acf_posts']) {
    global $wp_query, $wpdb, $post;
    $wp_query->in_the_loop = true;
    // Fake being in the loop.
    // create SQL with %d placeholders
    $where = 'WHERE ID IN (' . substr(str_repeat('%d,', count($my_options['acf_posts'])), 0, -1) . ')';
    // now prepare the SQL based on the %d + $_POST data