define( 'WXR_VERSION', '1.2' );
/**
- * Generates the WXR export file for download
+ * Generates the WXR export file for download.
*
* @since 2.1.0
*
- * @param array $args Filters defining what should be included in the export
+ * @param array $args Filters defining what should be included in the export.
*/
function export_wp( $args = array() ) {
global $wpdb, $post;
);
$args = wp_parse_args( $args, $defaults );
+ /**
+ * Fires at the beginning of an export, before any headers are sent.
+ *
+ * @since 2.3.0
+ *
+ * @param array $args An array of export arguments.
+ */
do_action( 'export_wp', $args );
$sitename = sanitize_key( get_bloginfo( 'name' ) );
$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_date < %s", date( 'Y-m-d', strtotime('+1 month', strtotime($args['end_date'])) ) );
}
- // grab a snapshot of post IDs, just in case it changes during the export
+ // 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" );
- // get the requested terms ready, empty unless posts filtered by category or all content
+ /*
+ * Get the requested terms ready, empty unless posts filtered by category
+ * or all content.
+ */
$cats = $tags = $terms = array();
if ( isset( $term ) && $term ) {
$cat = get_term( $term['term_id'], 'category' );
$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
+ // 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;
$categories[] = $cat;
}
- // put terms in order with no child going before its parent
+ // 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;
* @return string Site URL.
*/
function wxr_site_url() {
- // ms: the base url
+ // Multisite: the base URL.
if ( is_multisite() )
return network_home_url();
- // wp: the blog url
+ // WordPress (single site): the blog URL.
else
return get_bloginfo_rss( 'url' );
}
* Output list of authors with posts
*
* @since 3.1.0
+ *
+ * @param array $post_ids Array of post IDs to filter the query by. Optional.
*/
- function wxr_authors_list() {
+ function wxr_authors_list( array $post_ids = null ) {
global $wpdb;
+ if ( !empty( $post_ids ) ) {
+ $post_ids = array_map( 'absint', $post_ids );
+ $and = 'AND ID IN ( ' . implode( ', ', $post_ids ) . ')';
+ } else {
+ $and = '';
+ }
+
$authors = array();
- $results = $wpdb->get_results( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_status != 'auto-draft'" );
+ $results = $wpdb->get_results( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_status != 'auto-draft' $and" );
foreach ( (array) $results as $result )
$authors[] = get_userdata( $result->post_author );
<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 wxr_authors_list( $post_ids ); ?>
<?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 ); ?><?php wxr_category_description( $c ); ?></wp:category>
<?php endforeach; ?>
<?php if ( 'all' == $args['content'] ) wxr_nav_menu_terms(); ?>
- <?php do_action( 'rss2_head' ); ?>
+ <?php
+ /** This action is documented in wp-includes/feed-rss2.php */
+ do_action( 'rss2_head' );
+ ?>
<?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
+ // Fake being in the loop.
+ $wp_query->in_the_loop = true;
+
+ // 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
+ // 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>
+ <title><?php
+ /** This filter is documented in wp-includes/feed.php */
+ echo apply_filters( 'the_title_rss', $post->post_title );
+ ?></title>
<link><?php the_permalink_rss() ?></link>
<pubDate><?php echo mysql2date( 'D, d M Y H:i:s +0000', get_post_time( 'Y-m-d H:i:s', true ), false ); ?></pubDate>
<dc:creator><?php echo wxr_cdata( get_the_author_meta( 'login' ) ); ?></dc:creator>
<guid isPermaLink="false"><?php the_guid(); ?></guid>
<description></description>
- <content:encoded><?php echo wxr_cdata( apply_filters( 'the_content_export', $post->post_content ) ); ?></content:encoded>
- <excerpt:encoded><?php echo wxr_cdata( apply_filters( 'the_excerpt_export', $post->post_excerpt ) ); ?></excerpt:encoded>
+ <content:encoded><?php
+ /**
+ * Filter the post content used for WXR exports.
+ *
+ * @since 2.5.0
+ *
+ * @param string $post_content Content of the current post.
+ */
+ echo wxr_cdata( apply_filters( 'the_content_export', $post->post_content ) );
+ ?></content:encoded>
+ <excerpt:encoded><?php
+ /**
+ * Filter the post excerpt used for WXR exports.
+ *
+ * @since 2.6.0
+ *
+ * @param string $post_excerpt Excerpt for the current post.
+ */
+ 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>
<?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 ) :
+ /**
+ * Filter whether to selectively skip post meta used for WXR exports.
+ *
+ * Returning a truthy value to the filter will skip the current meta
+ * object from being exported.
+ *
+ * @since 3.3.0
+ *
+ * @param bool $skip Whether to skip the current post meta. Default false.
+ * @param string $meta_key Current meta key.
+ * @param object $meta Current meta object.
+ */
if ( apply_filters( 'wxr_export_skip_postmeta', false, $meta->meta_key, $meta ) )
continue;
?>
<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 endforeach; ?>
-<?php $comments = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved <> 'spam'", $post->ID ) );
+<?php endforeach;
+
+ $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_parent><?php echo $c->comment_parent; ?></wp:comment_parent>
<wp:comment_user_id><?php echo $c->user_id; ?></wp:comment_user_id>
<?php $c_meta = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->commentmeta WHERE comment_id = %d", $c->comment_ID ) );
- foreach ( $c_meta as $meta ) : ?>
+ foreach ( $c_meta as $meta ) :
+ /**
+ * Filter whether to selectively skip comment meta used for WXR exports.
+ *
+ * Returning a truthy value to the filter will skip the current meta
+ * object from being exported.
+ *
+ * @since 4.0.0
+ *
+ * @param bool $skip Whether to skip the current comment meta. Default false.
+ * @param string $meta_key Current meta key.
+ * @param object $meta Current meta object.
+ */
+ if ( apply_filters( 'wxr_export_skip_commentmeta', false, $meta->meta_key, $meta ) ) {
+ continue;
+ }
+ ?>
<wp:commentmeta>
<wp:meta_key><?php echo $meta->meta_key; ?></wp:meta_key>
<wp:meta_value><?php echo wxr_cdata( $meta->meta_value ); ?></wp:meta_value>
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