‘all’, ‘author’ => false, ‘category’ => false,
‘start_date’ => false, ‘end_date’ => false, ‘status’ => false,
);
$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’ ) );
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 );
header( ‘Content-Type: text/xml; charset=’ . get_option( ‘blog_charset’ ), true );

if ( ‘all’ != $args[‘content’] && post_type_exists( $args[‘content’] ) ) {
$ptype = get_post_type_object( $args[‘content’] );
if ( ! $ptype->can_export )
$args[‘content’] = ‘post’;

$where = $wpdb->prepare( “{$wpdb->posts}.post_type = %s”, $args[‘content’] );
} else {
$post_types = get_post_types( array( ‘can_export’ => true ) );
$esses = array_fill( 0, count($post_types), ‘%s’ );
$where = $wpdb->prepare( “{$wpdb->posts}.post_type IN (” . implode( ‘,’, $esses ) . ‘)’, $post_types );
}

if ( $args[‘status’] && ( ‘post’ == $args[‘content’] || ‘page’ == $args[‘content’] ) )
$where .= $wpdb->prepare( ” AND {$wpdb->posts}.post_status = %s”, $args[‘status’] );
else
$where .= ” AND {$wpdb->posts}.post_status != ‘auto-draft'”;

$join = ”;
if ( $args[‘category’] && ‘post’ == $args[‘content’] ) {
if ( $term = term_exists( $args[‘category’], ‘category’ ) ) {
$join = “INNER JOIN {$wpdb->term_relationships} ON ({$wpdb->posts}.ID = {$wpdb->term_relationships}.object_id)”;
$where .= $wpdb->prepare( ” AND {$wpdb->term_relationships}.term_taxonomy_id = %d”, $term[‘term_taxonomy_id’] );
}
}

if ( ‘post’ == $args[‘content’] || ‘page’ == $args[‘content’] || ‘attachment’ == $args[‘content’] ) {
if ( $args[‘author’] )
$where .= $wpdb->prepare( ” AND {$wpdb->posts}.post_author = %d”, $args[‘author’] );

if ( $args[‘start_date’] )
$where .= $wpdb->prepare( ” AND {$wpdb->posts}.post_date >= %s”, date( ‘Y-m-d’, strtotime($args[‘start_date’]) ) );

if ( $args[‘end_date’] )
$where .= $wpdb->prepare( ” AND {$wpdb->posts}.post_date get_col( “SELECT ID FROM {$wpdb->posts} $join WHERE $where” );

/*
* 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 );
} 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.
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 ) ) {
$str = utf8_encode( $str );
}
// $str = ent2ncr(esc_html($str));
$str = ”, ‘]]]]>’, $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();
// WordPress (single site): 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 ‘‘ . wxr_cdata( $category->name ) . “n”;
}

/**
* 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 ‘‘ . wxr_cdata( $category->description ) . “n”;
}

/**
* 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 ‘‘ . wxr_cdata( $tag->name ) . “n”;
}

/**
* 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 ‘‘ . wxr_cdata( $tag->description ) . “n”;
}

/**
* 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 ‘‘ . wxr_cdata( $term->name ) . “n”;
}

/**
* Output a term_description XML tag from a given term object
*
* @since 2.9.0
*
* @param object $term Term Object
*/
function wxr_term_description( $term ) {
if ( empty( $term->description ) )
return;

echo “tt” . wxr_cdata( $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( “ttnttt%snttt%snttn”, 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( 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’ $and” );
foreach ( (array) $results as $result )
$authors[] = get_userdata( $result->post_author );

$authors = array_filter( $authors );

foreach ( $authors as $author ) {
echo “t“;
echo ‘‘ . intval( $author->ID ) . ‘‘;
echo ‘‘ . wxr_cdata( $author->user_login ) . ‘‘;
echo ‘‘ . wxr_cdata( $author->user_email ) . ‘‘;
echo ‘‘ . wxr_cdata( $author->display_name ) . ‘‘;
echo ‘‘ . wxr_cdata( $author->first_name ) . ‘‘;
echo ‘‘ . wxr_cdata( $author->last_name ) . ‘‘;
echo “n”;
}
}

/**
* Output 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“;
echo ‘‘ . intval( $menu->term_id ) . ‘‘;
echo ‘nav_menu‘;
echo ‘‘ . wxr_cdata( $menu->slug ) . ‘‘;
wxr_term_name( $menu );
echo “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 $term ) {
echo “tttaxonomy}” nicename=”{$term->slug}”>” . wxr_cdata( $term->name ) . “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 ‘n”;

?>

term_id ); ?>slug ); ?>parent ? $cats[$c->parent]->slug : ” ); ?>term_id ); ?>slug ); ?>term_id ); ?>taxonomy ); ?>slug ); ?>parent ? $terms[$t->parent]->slug : ” ); ?>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.
foreach ( $posts as $post ) {
setup_postdata( $post );
$is_sticky = is_sticky( $post->ID ) ? 1 : 0;
?>
post_content ) );
?>post_excerpt ) );
?>ID ); ?>post_date ); ?>post_date_gmt ); ?>comment_status ); ?>ping_status ); ?>post_name ); ?>post_status ); ?>post_parent ); ?>menu_order ); ?>post_type ); ?>post_password ); ?>post_type == ‘attachment’ ) : ?>
ID ) ); ?>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;
?> meta_key ); ?>meta_value ); ?>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 ) : ?>
comment_ID ); ?>comment_author ); ?>comment_author_email ); ?>comment_author_url ); ?>comment_author_IP ); ?>comment_date ); ?>comment_date_gmt ); ?>comment_content ) ?>comment_approved ); ?>comment_type ); ?>comment_parent ); ?>user_id ); ?>get_results( $wpdb->prepare( “SELECT * FROM $wpdb->commentmeta WHERE comment_id = %d”, $c->comment_ID ) );
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;
}
?>
meta_key ); ?>meta_value ); ?>