define( 'WXR_VERSION', '1.2' );
/**
- * Generates the WXR export file for download
+ * Generates the WXR export file for download.
+ *
+ * Default behavior is to export all content, however, note that post content will only
+ * be exported for post types with the `can_export` argument enabled. Any posts with the
+ * 'auto-draft' status will be skipped.
*
* @since 2.1.0
*
- * @param array $args Filters defining what should be included in the export
+ * @global wpdb $wpdb WordPress database abstraction object.
+ * @global WP_Post $post Global `$post`.
+ *
+ * @param array $args {
+ * Optional. Arguments for generating the WXR export file for download. Default empty array.
+ *
+ * @type string $content Type of content to export. If set, only the post content of this post type
+ * will be exported. Accepts 'all', 'post', 'page', 'attachment', or a defined
+ * custom post. If an invalid custom post type is supplied, every post type for
+ * which `can_export` is enabled will be exported instead. If a valid custom post
+ * type is supplied but `can_export` is disabled, then 'posts' will be exported
+ * instead. When 'all' is supplied, only post types with `can_export` enabled will
+ * be exported. Default 'all'.
+ * @type string $author Author to export content for. Only used when `$content` is 'post', 'page', or
+ * 'attachment'. Accepts false (all) or a specific author ID. Default false (all).
+ * @type string $category Category (slug) to export content for. Used only when `$content` is 'post'. If
+ * set, only post content assigned to `$category will be exported. Accepts false
+ * or a specific category slug. Default is false (all categories).
+ * @type string $start_date Start date to export content from. Expected date format is 'Y-m-d'. Used only
+ * when `$content` is 'post', 'page' or 'attachment'. Default false (since the
+ * beginning of time).
+ * @type string $end_date End date to export content to. Expected date format is 'Y-m-d'. Used only when
+ * `$content` is 'post', 'page' or 'attachment'. Default false (latest publish date).
+ * @type string $status Post status to export posts for. Used only when `$content` is 'post' or 'page'.
+ * Accepts false (all statuses except 'auto-draft'), or a specific status, i.e.
+ * 'publish', 'pending', 'draft', 'auto-draft', 'future', 'private', 'inherit', or
+ * 'trash'. Default false (all statuses except 'auto-draft').
+ * }
*/
function export_wp( $args = array() ) {
global $wpdb, $post;
);
$args = wp_parse_args( $args, $defaults );
- do_action( 'export_wp' );
+ /**
+ * 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 );
$sitename = sanitize_key( get_bloginfo( 'name' ) );
- if ( ! empty($sitename) ) $sitename .= '.';
- $filename = $sitename . 'wordpress.' . date( 'Y-m-d' ) . '.xml';
+ if ( ! empty( $sitename ) ) {
+ $sitename .= '.';
+ }
+ $date = date( 'Y-m-d' );
+ $wp_filename = $sitename . 'wordpress.' . $date . '.xml';
+ /**
+ * Filters the export filename.
+ *
+ * @since 4.4.0
+ *
+ * @param string $wp_filename The name of the file for download.
+ * @param string $sitename The site name.
+ * @param string $date Today's date, formatted.
+ */
+ $filename = apply_filters( 'export_wp_filename', $wp_filename, $sitename, $date );
header( 'Content-Description: File Transfer' );
header( 'Content-Disposition: attachment; filename=' . $filename );
}
}
- if ( 'post' == $args['content'] || 'page' == $args['content'] ) {
+ if ( 'post' == $args['content'] || 'page' == $args['content'] || 'attachment' == $args['content'] ) {
if ( $args['author'] )
$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_author = %d", $args['author'] );
$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' );
$cats = array( $cat->term_id => $cat );
unset( $term, $cat );
- } else if ( 'all' == $args['content'] ) {
+ } elseif ( 'all' == $args['content'] ) {
$categories = (array) get_categories( array( 'get' => 'all' ) );
$tags = (array) get_tags( 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
+ // 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
*/
function wxr_cdata( $str ) {
- if ( seems_utf8( $str ) == false )
+ if ( ! seems_utf8( $str ) ) {
$str = utf8_encode( $str );
-
+ }
// $str = ent2ncr(esc_html($str));
$str = '<![CDATA[' . str_replace( ']]>', ']]]]><![CDATA[>', $str ) . ']]>';
* @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' );
}
if ( empty( $category->name ) )
return;
- echo '<wp:cat_name>' . wxr_cdata( $category->name ) . '</wp:cat_name>';
+ echo '<wp:cat_name>' . wxr_cdata( $category->name ) . "</wp:cat_name>\n";
}
/**
if ( empty( $category->description ) )
return;
- echo '<wp:category_description>' . wxr_cdata( $category->description ) . '</wp:category_description>';
+ echo '<wp:category_description>' . wxr_cdata( $category->description ) . "</wp:category_description>\n";
}
/**
if ( empty( $tag->name ) )
return;
- echo '<wp:tag_name>' . wxr_cdata( $tag->name ) . '</wp:tag_name>';
+ echo '<wp:tag_name>' . wxr_cdata( $tag->name ) . "</wp:tag_name>\n";
}
/**
if ( empty( $tag->description ) )
return;
- echo '<wp:tag_description>' . wxr_cdata( $tag->description ) . '</wp:tag_description>';
+ echo '<wp:tag_description>' . wxr_cdata( $tag->description ) . "</wp:tag_description>\n";
}
/**
if ( empty( $term->name ) )
return;
- echo '<wp:term_name>' . wxr_cdata( $term->name ) . '</wp:term_name>';
+ echo '<wp:term_name>' . wxr_cdata( $term->name ) . "</wp:term_name>\n";
}
/**
if ( empty( $term->description ) )
return;
- echo '<wp:term_description>' . wxr_cdata( $term->description ) . '</wp:term_description>';
+ echo "\t\t<wp:term_description>" . wxr_cdata( $term->description ) . "</wp:term_description>\n";
+ }
+
+ /**
+ * Output term meta XML tags for a given term object.
+ *
+ * @since 4.6.0
+ *
+ * @param WP_Term $term Term object.
+ */
+ function wxr_term_meta( $term ) {
+ global $wpdb;
+
+ $termmeta = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->termmeta WHERE term_id = %d", $term->term_id ) );
+
+ foreach ( $termmeta as $meta ) {
+ /**
+ * Filters whether to selectively skip term meta used for WXR exports.
+ *
+ * Returning a truthy value to the filter will skip the current meta
+ * object from being exported.
+ *
+ * @since 4.6.0
+ *
+ * @param bool $skip Whether to skip the current piece of term meta. Default false.
+ * @param string $meta_key Current meta key.
+ * @param object $meta Current meta object.
+ */
+ if ( ! apply_filters( 'wxr_export_skip_termmeta', false, $meta->meta_key, $meta ) ) {
+ printf( "\t\t<wp:termmeta>\n\t\t\t<wp:meta_key>%s</wp:meta_key>\n\t\t\t<wp:meta_value>%s</wp:meta_value>\n\t\t</wp:termmeta>\n", wxr_cdata( $meta->meta_key ), wxr_cdata( $meta->meta_value ) );
+ }
+ }
}
/**
* Output list of authors with posts
*
* @since 3.1.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @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" );
+ $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 );
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_id>' . intval( $author->ID ) . '</wp:author_id>';
+ 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->user_firstname ) . '</wp:author_first_name>';
- echo '<wp:author_last_name>' . wxr_cdata( $author->user_lastname ) . '</wp:author_last_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
+ * Output all navigation menu terms
*
* @since 3.1.0
*/
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>";
+ 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";
}
* @since 2.3.0
*/
function wxr_post_taxonomy() {
- global $post;
+ $post = get_post();
$taxonomies = get_object_taxonomies( $post->post_type );
if ( empty( $taxonomies ) )
}
}
+ /**
+ *
+ * @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;
<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>
+ <wp:category>
+ <wp:term_id><?php echo intval( $c->term_id ); ?></wp:term_id>
+ <wp:category_nicename><?php echo wxr_cdata( $c->slug ); ?></wp:category_nicename>
+ <wp:category_parent><?php echo wxr_cdata( $c->parent ? $cats[$c->parent]->slug : '' ); ?></wp:category_parent>
+ <?php wxr_cat_name( $c );
+ wxr_category_description( $c );
+ wxr_term_meta( $c ); ?>
+ </wp:category>
<?php endforeach; ?>
<?php foreach ( $tags as $t ) : ?>
- <wp:tag><wp:term_id><?php echo $t->term_id ?></wp:term_id><wp:tag_slug><?php echo $t->slug; ?></wp:tag_slug><?php wxr_tag_name( $t ); ?><?php wxr_tag_description( $t ); ?></wp:tag>
+ <wp:tag>
+ <wp:term_id><?php echo intval( $t->term_id ); ?></wp:term_id>
+ <wp:tag_slug><?php echo wxr_cdata( $t->slug ); ?></wp:tag_slug>
+ <?php wxr_tag_name( $t );
+ wxr_tag_description( $t );
+ wxr_term_meta( $t ); ?>
+ </wp:tag>
<?php endforeach; ?>
<?php foreach ( $terms as $t ) : ?>
- <wp:term><wp:term_id><?php echo $t->term_id ?></wp:term_id><wp:term_taxonomy><?php echo $t->taxonomy; ?></wp:term_taxonomy><wp:term_slug><?php echo $t->slug; ?></wp:term_slug><wp:term_parent><?php echo $t->parent ? $terms[$t->parent]->slug : ''; ?></wp:term_parent><?php wxr_term_name( $t ); ?><?php wxr_term_description( $t ); ?></wp:term>
+ <wp:term>
+ <wp:term_id><?php echo wxr_cdata( $t->term_id ); ?></wp:term_id>
+ <wp:term_taxonomy><?php echo wxr_cdata( $t->taxonomy ); ?></wp:term_taxonomy>
+ <wp:term_slug><?php echo wxr_cdata( $t->slug ); ?></wp:term_slug>
+ <wp:term_parent><?php echo wxr_cdata( $t->parent ? $terms[$t->parent]->slug : '' ); ?></wp:term_parent>
+ <?php wxr_term_name( $t );
+ wxr_term_description( $t );
+ wxr_term_meta( $t ); ?>
+ </wp:term>
<?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
+ */
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>
- <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 get_the_author_meta( 'login' ); ?></dc:creator>
- <guid isPermaLink="false"><?php esc_url( the_guid() ); ?></guid>
+ <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>
- <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>
+ <content:encoded><?php
+ /**
+ * Filters 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
+ /**
+ * Filters 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 intval( $post->ID ); ?></wp:post_id>
+ <wp:post_date><?php echo wxr_cdata( $post->post_date ); ?></wp:post_date>
+ <wp:post_date_gmt><?php echo wxr_cdata( $post->post_date_gmt ); ?></wp:post_date_gmt>
+ <wp:comment_status><?php echo wxr_cdata( $post->comment_status ); ?></wp:comment_status>
+ <wp:ping_status><?php echo wxr_cdata( $post->ping_status ); ?></wp:ping_status>
+ <wp:post_name><?php echo wxr_cdata( $post->post_name ); ?></wp:post_name>
+ <wp:status><?php echo wxr_cdata( $post->post_status ); ?></wp:status>
+ <wp:post_parent><?php echo intval( $post->post_parent ); ?></wp:post_parent>
+ <wp:menu_order><?php echo intval( $post->menu_order ); ?></wp:menu_order>
+ <wp:post_type><?php echo wxr_cdata( $post->post_type ); ?></wp:post_type>
+ <wp:post_password><?php echo wxr_cdata( $post->post_password ); ?></wp:post_password>
+ <wp:is_sticky><?php echo intval( $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>
+ <wp:attachment_url><?php echo wxr_cdata( wp_get_attachment_url( $post->ID ) ); ?></wp:attachment_url>
<?php endif; ?>
<?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 ) :
+ /**
+ * Filters 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:postmeta>
- <wp:meta_key><?php echo $meta->meta_key; ?></wp:meta_key>
+ <wp:meta_key><?php echo wxr_cdata( $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 ) );
+ $comments = array_map( 'get_comment', $_comments );
foreach ( $comments as $c ) : ?>
<wp:comment>
- <wp:comment_id><?php echo $c->comment_ID; ?></wp:comment_id>
+ <wp:comment_id><?php echo intval( $c->comment_ID ); ?></wp:comment_id>
<wp:comment_author><?php echo wxr_cdata( $c->comment_author ); ?></wp:comment_author>
- <wp:comment_author_email><?php echo $c->comment_author_email; ?></wp:comment_author_email>
+ <wp:comment_author_email><?php echo wxr_cdata( $c->comment_author_email ); ?></wp:comment_author_email>
<wp:comment_author_url><?php echo esc_url_raw( $c->comment_author_url ); ?></wp:comment_author_url>
- <wp:comment_author_IP><?php echo $c->comment_author_IP; ?></wp:comment_author_IP>
- <wp:comment_date><?php echo $c->comment_date; ?></wp:comment_date>
- <wp:comment_date_gmt><?php echo $c->comment_date_gmt; ?></wp:comment_date_gmt>
+ <wp:comment_author_IP><?php echo wxr_cdata( $c->comment_author_IP ); ?></wp:comment_author_IP>
+ <wp:comment_date><?php echo wxr_cdata( $c->comment_date ); ?></wp:comment_date>
+ <wp:comment_date_gmt><?php echo wxr_cdata( $c->comment_date_gmt ); ?></wp:comment_date_gmt>
<wp:comment_content><?php echo wxr_cdata( $c->comment_content ) ?></wp:comment_content>
- <wp:comment_approved><?php echo $c->comment_approved; ?></wp:comment_approved>
- <wp:comment_type><?php echo $c->comment_type; ?></wp:comment_type>
- <wp:comment_parent><?php echo $c->comment_parent; ?></wp:comment_parent>
- <wp:comment_user_id><?php echo $c->user_id; ?></wp:comment_user_id>
+ <wp:comment_approved><?php echo wxr_cdata( $c->comment_approved ); ?></wp:comment_approved>
+ <wp:comment_type><?php echo wxr_cdata( $c->comment_type ); ?></wp:comment_type>
+ <wp:comment_parent><?php echo intval( $c->comment_parent ); ?></wp:comment_parent>
+ <wp:comment_user_id><?php echo intval( $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 ) :
+ /**
+ * Filters 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_key><?php echo wxr_cdata( $meta->meta_key ); ?></wp:meta_key>
<wp:meta_value><?php echo wxr_cdata( $meta->meta_value ); ?></wp:meta_value>
</wp:commentmeta>
<?php endforeach; ?>
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