3
* WordPress Export Administration API
6
* @subpackage Administration
10
* Version number for the export format.
12
* Bump this when something changes that might affect compatibility.
16
define( 'WXR_VERSION', '1.2' );
19
* Generates the WXR export file for download
23
* @param array $args Filters defining what should be included in the export
25
function export_wp( $args = array() ) {
28
$defaults = array( 'content' => 'all', 'author' => false, 'category' => false,
29
'start_date' => false, 'end_date' => false, 'status' => false,
31
$args = wp_parse_args( $args, $defaults );
34
* Fires at the beginning of an export, before any headers are sent.
38
* @param array $args An array of export arguments.
40
do_action( 'export_wp', $args );
42
$sitename = sanitize_key( get_bloginfo( 'name' ) );
43
if ( ! empty($sitename) ) $sitename .= '.';
44
$filename = $sitename . 'wordpress.' . date( 'Y-m-d' ) . '.xml';
46
header( 'Content-Description: File Transfer' );
47
header( 'Content-Disposition: attachment; filename=' . $filename );
48
header( 'Content-Type: text/xml; charset=' . get_option( 'blog_charset' ), true );
50
if ( 'all' != $args['content'] && post_type_exists( $args['content'] ) ) {
51
$ptype = get_post_type_object( $args['content'] );
52
if ( ! $ptype->can_export )
53
$args['content'] = 'post';
55
$where = $wpdb->prepare( "{$wpdb->posts}.post_type = %s", $args['content'] );
57
$post_types = get_post_types( array( 'can_export' => true ) );
58
$esses = array_fill( 0, count($post_types), '%s' );
59
$where = $wpdb->prepare( "{$wpdb->posts}.post_type IN (" . implode( ',', $esses ) . ')', $post_types );
62
if ( $args['status'] && ( 'post' == $args['content'] || 'page' == $args['content'] ) )
63
$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_status = %s", $args['status'] );
65
$where .= " AND {$wpdb->posts}.post_status != 'auto-draft'";
68
if ( $args['category'] && 'post' == $args['content'] ) {
69
if ( $term = term_exists( $args['category'], 'category' ) ) {
70
$join = "INNER JOIN {$wpdb->term_relationships} ON ({$wpdb->posts}.ID = {$wpdb->term_relationships}.object_id)";
71
$where .= $wpdb->prepare( " AND {$wpdb->term_relationships}.term_taxonomy_id = %d", $term['term_taxonomy_id'] );
75
if ( 'post' == $args['content'] || 'page' == $args['content'] ) {
76
if ( $args['author'] )
77
$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_author = %d", $args['author'] );
79
if ( $args['start_date'] )
80
$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_date >= %s", date( 'Y-m-d', strtotime($args['start_date']) ) );
82
if ( $args['end_date'] )
83
$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_date < %s", date( 'Y-m-d', strtotime('+1 month', strtotime($args['end_date'])) ) );
86
// Grab a snapshot of post IDs, just in case it changes during the export.
87
$post_ids = $wpdb->get_col( "SELECT ID FROM {$wpdb->posts} $join WHERE $where" );
90
* Get the requested terms ready, empty unless posts filtered by category
93
$cats = $tags = $terms = array();
94
if ( isset( $term ) && $term ) {
95
$cat = get_term( $term['term_id'], 'category' );
96
$cats = array( $cat->term_id => $cat );
98
} else if ( 'all' == $args['content'] ) {
99
$categories = (array) get_categories( array( 'get' => 'all' ) );
100
$tags = (array) get_tags( array( 'get' => 'all' ) );
102
$custom_taxonomies = get_taxonomies( array( '_builtin' => false ) );
103
$custom_terms = (array) get_terms( $custom_taxonomies, array( 'get' => 'all' ) );
105
// Put categories in order with no child going before its parent.
106
while ( $cat = array_shift( $categories ) ) {
107
if ( $cat->parent == 0 || isset( $cats[$cat->parent] ) )
108
$cats[$cat->term_id] = $cat;
110
$categories[] = $cat;
113
// Put terms in order with no child going before its parent.
114
while ( $t = array_shift( $custom_terms ) ) {
115
if ( $t->parent == 0 || isset( $terms[$t->parent] ) )
116
$terms[$t->term_id] = $t;
118
$custom_terms[] = $t;
121
unset( $categories, $custom_taxonomies, $custom_terms );
125
* Wrap given string in XML CDATA tag.
129
* @param string $str String to wrap in XML CDATA tag.
132
function wxr_cdata( $str ) {
133
if ( seems_utf8( $str ) == false )
134
$str = utf8_encode( $str );
136
// $str = ent2ncr(esc_html($str));
137
$str = '<![CDATA[' . str_replace( ']]>', ']]]]><![CDATA[>', $str ) . ']]>';
143
* Return the URL of the site
147
* @return string Site URL.
149
function wxr_site_url() {
150
// Multisite: the base URL.
151
if ( is_multisite() )
152
return network_home_url();
153
// WordPress (single site): the blog URL.
155
return get_bloginfo_rss( 'url' );
159
* Output a cat_name XML tag from a given category object
163
* @param object $category Category Object
165
function wxr_cat_name( $category ) {
166
if ( empty( $category->name ) )
169
echo '<wp:cat_name>' . wxr_cdata( $category->name ) . '</wp:cat_name>';
173
* Output a category_description XML tag from a given category object
177
* @param object $category Category Object
179
function wxr_category_description( $category ) {
180
if ( empty( $category->description ) )
183
echo '<wp:category_description>' . wxr_cdata( $category->description ) . '</wp:category_description>';
187
* Output a tag_name XML tag from a given tag object
191
* @param object $tag Tag Object
193
function wxr_tag_name( $tag ) {
194
if ( empty( $tag->name ) )
197
echo '<wp:tag_name>' . wxr_cdata( $tag->name ) . '</wp:tag_name>';
201
* Output a tag_description XML tag from a given tag object
205
* @param object $tag Tag Object
207
function wxr_tag_description( $tag ) {
208
if ( empty( $tag->description ) )
211
echo '<wp:tag_description>' . wxr_cdata( $tag->description ) . '</wp:tag_description>';
215
* Output a term_name XML tag from a given term object
219
* @param object $term Term Object
221
function wxr_term_name( $term ) {
222
if ( empty( $term->name ) )
225
echo '<wp:term_name>' . wxr_cdata( $term->name ) . '</wp:term_name>';
229
* Output a term_description XML tag from a given term object
233
* @param object $term Term Object
235
function wxr_term_description( $term ) {
236
if ( empty( $term->description ) )
239
echo '<wp:term_description>' . wxr_cdata( $term->description ) . '</wp:term_description>';
243
* Output list of authors with posts
247
* @param array $post_ids Array of post IDs to filter the query by. Optional.
249
function wxr_authors_list( array $post_ids = null ) {
252
if ( !empty( $post_ids ) ) {
253
$post_ids = array_map( 'absint', $post_ids );
254
$and = 'AND ID IN ( ' . implode( ', ', $post_ids ) . ')';
260
$results = $wpdb->get_results( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_status != 'auto-draft' $and" );
261
foreach ( (array) $results as $result )
262
$authors[] = get_userdata( $result->post_author );
264
$authors = array_filter( $authors );
266
foreach ( $authors as $author ) {
267
echo "\t<wp:author>";
268
echo '<wp:author_id>' . $author->ID . '</wp:author_id>';
269
echo '<wp:author_login>' . $author->user_login . '</wp:author_login>';
270
echo '<wp:author_email>' . $author->user_email . '</wp:author_email>';
271
echo '<wp:author_display_name>' . wxr_cdata( $author->display_name ) . '</wp:author_display_name>';
272
echo '<wp:author_first_name>' . wxr_cdata( $author->user_firstname ) . '</wp:author_first_name>';
273
echo '<wp:author_last_name>' . wxr_cdata( $author->user_lastname ) . '</wp:author_last_name>';
274
echo "</wp:author>\n";
279
* Ouput all navigation menu terms
283
function wxr_nav_menu_terms() {
284
$nav_menus = wp_get_nav_menus();
285
if ( empty( $nav_menus ) || ! is_array( $nav_menus ) )
288
foreach ( $nav_menus as $menu ) {
289
echo "\t<wp:term><wp:term_id>{$menu->term_id}</wp:term_id><wp:term_taxonomy>nav_menu</wp:term_taxonomy><wp:term_slug>{$menu->slug}</wp:term_slug>";
290
wxr_term_name( $menu );
296
* Output list of taxonomy terms, in XML tag format, associated with a post
300
function wxr_post_taxonomy() {
303
$taxonomies = get_object_taxonomies( $post->post_type );
304
if ( empty( $taxonomies ) )
306
$terms = wp_get_object_terms( $post->ID, $taxonomies );
308
foreach ( (array) $terms as $term ) {
309
echo "\t\t<category domain=\"{$term->taxonomy}\" nicename=\"{$term->slug}\">" . wxr_cdata( $term->name ) . "</category>\n";
313
function wxr_filter_postmeta( $return_me, $meta_key ) {
314
if ( '_edit_lock' == $meta_key )
318
add_filter( 'wxr_export_skip_postmeta', 'wxr_filter_postmeta', 10, 2 );
320
echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . "\" ?>\n";
323
<!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your site. -->
324
<!-- It contains information about your site's posts, pages, comments, categories, and other content. -->
325
<!-- You may use this file to transfer that content from one site to another. -->
326
<!-- This file is not intended to serve as a complete backup of your site. -->
328
<!-- To import this information into a WordPress site follow these steps: -->
329
<!-- 1. Log in to that site as an administrator. -->
330
<!-- 2. Go to Tools: Import in the WordPress admin panel. -->
331
<!-- 3. Install the "WordPress" importer from the list. -->
332
<!-- 4. Activate & Run Importer. -->
333
<!-- 5. Upload this file using the form provided on that page. -->
334
<!-- 6. You will first be asked to map the authors in this export file to users -->
335
<!-- on the site. For each author, you may choose to map to an -->
336
<!-- existing user on the site or to create a new user. -->
337
<!-- 7. WordPress will then import each of the posts, pages, comments, categories, etc. -->
338
<!-- contained in this file into your site. -->
340
<?php the_generator( 'export' ); ?>
342
xmlns:excerpt="http://wordpress.org/export/<?php echo WXR_VERSION; ?>/excerpt/"
343
xmlns:content="http://purl.org/rss/1.0/modules/content/"
344
xmlns:wfw="http://wellformedweb.org/CommentAPI/"
345
xmlns:dc="http://purl.org/dc/elements/1.1/"
346
xmlns:wp="http://wordpress.org/export/<?php echo WXR_VERSION; ?>/"
350
<title><?php bloginfo_rss( 'name' ); ?></title>
351
<link><?php bloginfo_rss( 'url' ); ?></link>
352
<description><?php bloginfo_rss( 'description' ); ?></description>
353
<pubDate><?php echo date( 'D, d M Y H:i:s +0000' ); ?></pubDate>
354
<language><?php bloginfo_rss( 'language' ); ?></language>
355
<wp:wxr_version><?php echo WXR_VERSION; ?></wp:wxr_version>
356
<wp:base_site_url><?php echo wxr_site_url(); ?></wp:base_site_url>
357
<wp:base_blog_url><?php bloginfo_rss( 'url' ); ?></wp:base_blog_url>
359
<?php wxr_authors_list( $post_ids ); ?>
361
<?php foreach ( $cats as $c ) : ?>
362
<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>
364
<?php foreach ( $tags as $t ) : ?>
365
<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>
367
<?php foreach ( $terms as $t ) : ?>
368
<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>
370
<?php if ( 'all' == $args['content'] ) wxr_nav_menu_terms(); ?>
373
/** This action is documented in wp-includes/feed-rss2.php */
374
do_action( 'rss2_head' );
377
<?php if ( $post_ids ) {
380
// Fake being in the loop.
381
$wp_query->in_the_loop = true;
383
// Fetch 20 posts at a time rather than loading the entire table into memory.
384
while ( $next_posts = array_splice( $post_ids, 0, 20 ) ) {
385
$where = 'WHERE ID IN (' . join( ',', $next_posts ) . ')';
386
$posts = $wpdb->get_results( "SELECT * FROM {$wpdb->posts} $where" );
389
foreach ( $posts as $post ) {
390
setup_postdata( $post );
391
$is_sticky = is_sticky( $post->ID ) ? 1 : 0;
394
<?php /** This filter is documented in wp-includes/feed.php */ ?>
395
<title><?php echo apply_filters( 'the_title_rss', $post->post_title ); ?></title>
396
<link><?php the_permalink_rss() ?></link>
397
<pubDate><?php echo mysql2date( 'D, d M Y H:i:s +0000', get_post_time( 'Y-m-d H:i:s', true ), false ); ?></pubDate>
398
<dc:creator><?php echo wxr_cdata( get_the_author_meta( 'login' ) ); ?></dc:creator>
399
<guid isPermaLink="false"><?php the_guid(); ?></guid>
400
<description></description>
401
<content:encoded><?php
403
* Filter the post content used for WXR exports.
407
* @param string $post_content Content of the current post.
409
echo wxr_cdata( apply_filters( 'the_content_export', $post->post_content ) );
411
<excerpt:encoded><?php
413
* Filter the post excerpt used for WXR exports.
417
* @param string $post_excerpt Excerpt for the current post.
419
echo wxr_cdata( apply_filters( 'the_excerpt_export', $post->post_excerpt ) );
421
<wp:post_id><?php echo $post->ID; ?></wp:post_id>
422
<wp:post_date><?php echo $post->post_date; ?></wp:post_date>
423
<wp:post_date_gmt><?php echo $post->post_date_gmt; ?></wp:post_date_gmt>
424
<wp:comment_status><?php echo $post->comment_status; ?></wp:comment_status>
425
<wp:ping_status><?php echo $post->ping_status; ?></wp:ping_status>
426
<wp:post_name><?php echo $post->post_name; ?></wp:post_name>
427
<wp:status><?php echo $post->post_status; ?></wp:status>
428
<wp:post_parent><?php echo $post->post_parent; ?></wp:post_parent>
429
<wp:menu_order><?php echo $post->menu_order; ?></wp:menu_order>
430
<wp:post_type><?php echo $post->post_type; ?></wp:post_type>
431
<wp:post_password><?php echo $post->post_password; ?></wp:post_password>
432
<wp:is_sticky><?php echo $is_sticky; ?></wp:is_sticky>
433
<?php if ( $post->post_type == 'attachment' ) : ?>
434
<wp:attachment_url><?php echo wp_get_attachment_url( $post->ID ); ?></wp:attachment_url>
436
<?php wxr_post_taxonomy(); ?>
437
<?php $postmeta = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->postmeta WHERE post_id = %d", $post->ID ) );
438
foreach ( $postmeta as $meta ) :
440
* Filter whether to selectively skip post meta used for WXR exports.
442
* Returning a truthy value to the filter will skip the current meta
443
* object from being exported.
447
* @param bool $skip Whether to skip the current post meta. Default false.
448
* @param string $meta_key Current meta key.
449
* @param object $meta Current meta object.
451
if ( apply_filters( 'wxr_export_skip_postmeta', false, $meta->meta_key, $meta ) )
455
<wp:meta_key><?php echo $meta->meta_key; ?></wp:meta_key>
456
<wp:meta_value><?php echo wxr_cdata( $meta->meta_value ); ?></wp:meta_value>
460
$comments = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved <> 'spam'", $post->ID ) );
461
foreach ( $comments as $c ) : ?>
463
<wp:comment_id><?php echo $c->comment_ID; ?></wp:comment_id>
464
<wp:comment_author><?php echo wxr_cdata( $c->comment_author ); ?></wp:comment_author>
465
<wp:comment_author_email><?php echo $c->comment_author_email; ?></wp:comment_author_email>
466
<wp:comment_author_url><?php echo esc_url_raw( $c->comment_author_url ); ?></wp:comment_author_url>
467
<wp:comment_author_IP><?php echo $c->comment_author_IP; ?></wp:comment_author_IP>
468
<wp:comment_date><?php echo $c->comment_date; ?></wp:comment_date>
469
<wp:comment_date_gmt><?php echo $c->comment_date_gmt; ?></wp:comment_date_gmt>
470
<wp:comment_content><?php echo wxr_cdata( $c->comment_content ) ?></wp:comment_content>
471
<wp:comment_approved><?php echo $c->comment_approved; ?></wp:comment_approved>
472
<wp:comment_type><?php echo $c->comment_type; ?></wp:comment_type>
473
<wp:comment_parent><?php echo $c->comment_parent; ?></wp:comment_parent>
474
<wp:comment_user_id><?php echo $c->user_id; ?></wp:comment_user_id>
475
<?php $c_meta = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->commentmeta WHERE comment_id = %d", $c->comment_ID ) );
476
foreach ( $c_meta as $meta ) :
478
* Filter whether to selectively skip comment meta used for WXR exports.
480
* Returning a truthy value to the filter will skip the current meta
481
* object from being exported.
485
* @param bool $skip Whether to skip the current comment meta. Default false.
486
* @param string $meta_key Current meta key.
487
* @param object $meta Current meta object.
489
if ( apply_filters( 'wxr_export_skip_commentmeta', false, $meta->meta_key, $meta ) ) {
494
<wp:meta_key><?php echo $meta->meta_key; ?></wp:meta_key>
495
<wp:meta_value><?php echo wxr_cdata( $meta->meta_value ); ?></wp:meta_value>
added
removed
wp-admin/includes/export.php
