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   1  <?php
   2  /**
   3   * WordPress Export Administration API
   4   *
   5   * @package WordPress
   6   * @subpackage Administration
   7   */
   8  
   9  /**
  10   * Version number for the export format.
  11   *
  12   * Bump this when something changes that might affect compatibility.
  13   *
  14   * @since unknown
  15   * @var string
  16   */
  17  define('WXR_VERSION', '1.0');
  18  
  19  /**
  20   * {@internal Missing Short Description}}
  21   *
  22   * @since unknown
  23   *
  24   * @param unknown_type $args
  25   */
  26  function export_wp( $args = array() ) {
  27      global $wpdb, $post_ids, $post, $wp_taxonomies;
  28  
  29      if ( ! is_array( $args ) )
  30          $args = array( 'author' => $args );
  31  
  32      $defaults = array( 'author' => null, 'taxonomy' => null, 'post_type' => null, 'post_status' => null, 'start_date' => null, 'end_date' => null );
  33      $args = wp_parse_args( $args, $defaults );
  34  
  35      extract($args);
  36  
  37      do_action('export_wp');
  38  
  39      if( strlen( $start_date ) > 4 && strlen( $end_date ) > 4 )
  40          $filename = 'wordpress.' . $start_date . '.' . $end_date . '.xml';
  41      else
  42          $filename = 'wordpress.' . date( 'Y-m-d' ) . '.xml';
  43  
  44      header( 'Content-Description: File Transfer' );
  45      header( 'Content-Disposition: attachment; filename=' . $filename );
  46      header( 'Content-Type: text/xml; charset=' . get_option( 'blog_charset' ), true );
  47  
  48      if ( $post_type && $post_type != 'all' )
  49          $where = $wpdb->prepare("WHERE post_type = %s ", $post_type);
  50      else
  51          $where = "WHERE post_type != 'revision' ";
  52  
  53      if ( $author && $author != 'all' ) {
  54          $author_id = (int) $author;
  55          $where .= $wpdb->prepare( "AND post_author = %d ", $author_id );
  56      }
  57  
  58      if ( $start_date && $start_date != 'all' )
  59          $where .= $wpdb->prepare( "AND post_date >= %s ", $start_date );
  60  
  61      if ( $end_date && $end_date != 'all' )
  62          $where .= $wpdb->prepare( "AND post_date < %s ", $end_date );
  63  
  64      if ( $taxonomy && is_array( $taxonomy ) ) {
  65          foreach ( $taxonomy as $term_id ) {
  66              if ( $term_id != 'all' )
  67                  $where .= $wpdb->prepare( "AND ID IN (SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d) ", $term_id );
  68          }
  69      }
  70  
  71      if ( $post_status && $post_status != 'all' )
  72          $where .= $wpdb->prepare( "AND post_status = %s", $status );
  73  
  74      // grab a snapshot of post IDs, just in case it changes during the export
  75      $post_ids = $wpdb->get_col( "SELECT ID FROM $wpdb->posts $where ORDER BY post_date_gmt ASC" );
  76  
  77      $categories = (array) get_categories( array( 'get' => 'all' ) );
  78      $tags = (array) get_tags( array( 'get' => 'all' ) );
  79  
  80      $custom_taxonomies = $wp_taxonomies;
  81      unset( $custom_taxonomies['category'] );
  82      unset( $custom_taxonomies['post_tag'] );
  83      unset( $custom_taxonomies['link_category'] );
  84      $custom_taxonomies = array_keys( $custom_taxonomies );
  85      $terms = (array) get_terms( $custom_taxonomies, array( 'get' => 'all' ) );
  86  
  87      /**
  88       * {@internal Missing Short Description}}
  89       *
  90       * @since unknown
  91       *
  92       * @param unknown_type $categories
  93       */
  94  	function wxr_missing_parents( $categories ) {
  95          if ( ! is_array( $categories ) || empty( $categories ) )
  96              return array();
  97  
  98          foreach ( $categories as $category ){
  99              $parents[$category->term_id] = $category->parent;
 100          }
 101  
 102          $parents = array_unique( array_diff( $parents, array_keys( $parents ) ) );
 103  
 104          if ( $zero = array_search( '0', $parents ) )
 105              unset( $parents[$zero] );
 106  
 107          return $parents;
 108      }
 109  
 110      while ( $parents = wxr_missing_parents( $categories ) ) {
 111          $found_parents = get_categories( array( 'include' => join( ', ', $parents) ) );
 112          if ( is_array( $found_parents ) && count( $found_parents ) )
 113              $categories = array_merge( $categories, $found_parents );
 114          else
 115              break;
 116      }
 117  
 118      // Put them in order to be inserted with no child going before its parent
 119      $pass = 0;
 120      $passes = 1000 + count( $categories );
 121      while ( ( $cat = array_shift( $categories ) ) && ++$pass < $passes ) {
 122          if ( $cat->parent == 0 || isset( $cats[$cat->parent] ) )
 123              $cats[$cat->term_id] = $cat;
 124          else
 125              $categories[] = $cat;
 126      }
 127      unset( $categories );
 128  
 129      /**
 130       * Place string in CDATA tag.
 131       *
 132       * @since unknown
 133       *
 134       * @param string $str String to place in XML CDATA tag.
 135       */
 136  	function wxr_cdata( $str ) {
 137          if ( seems_utf8( $str ) == false )
 138              $str = utf8_encode( $str );
 139  
 140          // $str = ent2ncr(esc_html($str));
 141          $str = "<![CDATA[$str" . ( ( substr( $str, -1 ) == ']' ) ? ' ' : '') . "]]>";
 142  
 143          return $str;
 144      }
 145  
 146      /**
 147       * {@internal Missing Short Description}}
 148       *
 149       * @since unknown
 150       *
 151       * @return string Site URL.
 152       */
 153  	function wxr_site_url() {
 154          global $current_site;
 155  
 156          // mu: the base url
 157          if ( isset( $current_site->domain ) )
 158              return network_home_url();
 159          // wp: the blog url
 160          else
 161              return get_bloginfo_rss( 'url' );
 162      }
 163  
 164      /**
 165       * {@internal Missing Short Description}}
 166       *
 167       * @since unknown
 168       *
 169       * @param object $c Category Object
 170       */
 171  	function wxr_cat_name( $c ) {
 172          if ( empty( $c->name ) )
 173              return;
 174  
 175          echo '<wp:cat_name>' . wxr_cdata( $c->name ) . '</wp:cat_name>';
 176      }
 177  
 178      /**
 179       * {@internal Missing Short Description}}
 180       *
 181       * @since unknown
 182       *
 183       * @param object $c Category Object
 184       */
 185  	function wxr_category_description( $c ) {
 186          if ( empty( $c->description ) )
 187              return;
 188  
 189          echo '<wp:category_description>' . wxr_cdata($c->description) . '</wp:category_description>';
 190      }
 191  
 192      /**
 193       * {@internal Missing Short Description}}
 194       *
 195       * @since unknown
 196       *
 197       * @param object $t Tag Object
 198       */
 199  	function wxr_tag_name( $t ) {
 200          if ( empty( $t->name ) )
 201              return;
 202  
 203          echo '<wp:tag_name>' . wxr_cdata($t->name) . '</wp:tag_name>';
 204      }
 205  
 206      /**
 207       * {@internal Missing Short Description}}
 208       *
 209       * @since unknown
 210       *
 211       * @param object $t Tag Object
 212       */
 213  	function wxr_tag_description( $t ) {
 214          if ( empty( $t->description ) )
 215              return;
 216  
 217          echo '<wp:tag_description>' . wxr_cdata($t->description) . '</wp:tag_description>';
 218      }
 219  
 220      /**
 221       * {@internal Missing Short Description}}
 222       *
 223       * @since unknown
 224       *
 225       * @param object $t Term Object
 226       */
 227  	function wxr_term_name( $t ) {
 228          if ( empty( $t->name ) )
 229              return;
 230  
 231          echo '<wp:term_name>' . wxr_cdata($t->name) . '</wp:term_name>';
 232      }
 233  
 234      /**
 235       * {@internal Missing Short Description}}
 236       *
 237       * @since unknown
 238       *
 239       * @param object $t Term Object
 240       */
 241  	function wxr_term_description( $t ) {
 242          if ( empty( $t->description ) )
 243              return;
 244  
 245          echo '<wp:term_description>' . wxr_cdata($t->description) . '</wp:term_description>';
 246      }
 247  
 248      /**
 249       * {@internal Missing Short Description}}
 250       *
 251       * @since unknown
 252       */
 253  	function wxr_post_taxonomy() {
 254          global $post;
 255  
 256          $the_list = '';
 257          $filter = 'rss';
 258  
 259          $taxonomies = get_object_taxonomies( 'post' );
 260          $terms = wp_get_post_terms( $post->ID, $taxonomies );
 261          foreach ( (array) $terms as $term ) {
 262              $domain = ( 'post_tag' == $term->taxonomy ) ? 'tag' : $term->taxonomy;
 263              $term_name = sanitize_term_field( 'name', $term->name, $term->term_id, $term->taxonomy, $filter );
 264              // Back compat.
 265              if ( 'category' == $term->taxonomy )
 266                  $the_list .= "\n\t\t<category><![CDATA[$term_name]]></category>\n";
 267              elseif ( 'post_tag' == $term->taxonomy )
 268                  $the_list .= "\n\t\t<category domain=\"$domain\"><![CDATA[$term_name]]></category>\n";
 269              // forwards compatibility as above
 270              $the_list .= "\n\t\t<category domain=\"$domain\" nicename=\"{$term->slug}\"><![CDATA[$term_name]]></category>\n";
 271          }
 272          echo $the_list;
 273      }
 274  
 275      echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . '"?' . ">\n";
 276  
 277      ?>
 278  <!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your blog. -->
 279  <!-- It contains information about your blog's posts, comments, and categories. -->
 280  <!-- You may use this file to transfer that content from one site to another. -->
 281  <!-- This file is not intended to serve as a complete backup of your blog. -->
 282  
 283  <!-- To import this information into a WordPress blog follow these steps. -->
 284  <!-- 1. Log in to that blog as an administrator. -->
 285  <!-- 2. Go to Tools: Import in the blog's admin panels (or Manage: Import in older versions of WordPress). -->
 286  <!-- 3. Choose "WordPress" from the list. -->
 287  <!-- 4. Upload this file using the form provided on that page. -->
 288  <!-- 5. You will first be asked to map the authors in this export file to users -->
 289  <!--    on the blog.  For each author, you may choose to map to an -->
 290  <!--    existing user on the blog or to create a new user -->
 291  <!-- 6. WordPress will then import each of the posts, comments, and categories -->
 292  <!--    contained in this file into your blog -->
 293  
 294  <?php the_generator( 'export' );?>
 295  <rss version="2.0"
 296      xmlns:excerpt="http://wordpress.org/export/<?php echo WXR_VERSION; ?>/excerpt/"
 297      xmlns:content="http://purl.org/rss/1.0/modules/content/"
 298      xmlns:wfw="http://wellformedweb.org/CommentAPI/"
 299      xmlns:dc="http://purl.org/dc/elements/1.1/"
 300      xmlns:wp="http://wordpress.org/export/<?php echo WXR_VERSION; ?>/"
 301  >
 302  
 303  <channel>
 304      <title><?php bloginfo_rss( 'name' ); ?></title>
 305      <link><?php bloginfo_rss( 'url' ) ?></link>
 306      <description><?php bloginfo_rss( 'description' ) ?></description>
 307      <pubDate><?php echo mysql2date( 'D, d M Y H:i:s +0000', get_lastpostmodified( 'GMT' ), false ); ?></pubDate>
 308      <generator>http://wordpress.org/?v=<?php bloginfo_rss( 'version' ); ?></generator>
 309      <language><?php echo get_option( 'rss_language' ); ?></language>
 310      <wp:wxr_version><?php echo WXR_VERSION; ?></wp:wxr_version>
 311      <wp:base_site_url><?php echo wxr_site_url(); ?></wp:base_site_url>
 312      <wp:base_blog_url><?php bloginfo_rss( 'url' ); ?></wp:base_blog_url>
 313      <?php if ( $cats ) : foreach ( $cats as $c ) : ?>
 314      <wp:category><wp:category_nicename><?php echo $c->slug; ?></wp:category_nicename><wp:category_parent><?php echo $c->parent ? $cats[$c->parent]->name : ''; ?></wp:category_parent><?php wxr_cat_name( $c ); ?><?php wxr_category_description( $c ); ?></wp:category>
 315      <?php endforeach; endif; ?>
 316      <?php if ( $tags ) : foreach ( $tags as $t ) : ?>
 317      <wp:tag><wp:tag_slug><?php echo $t->slug; ?></wp:tag_slug><?php wxr_tag_name( $t ); ?><?php wxr_tag_description( $t ); ?></wp:tag>
 318      <?php endforeach; endif; ?>
 319      <?php if ( $terms ) : foreach ( $terms as $t ) : ?>
 320      <wp:term><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 ? $custom_taxonomies[$t->parent]->name : ''; ?></wp:term_parent><?php wxr_term_name( $t ); ?><?php wxr_term_description( $t ); ?></wp:term>
 321      <?php endforeach; endif; ?>
 322  
 323      <?php do_action( 'rss2_head' ); ?>
 324  
 325      <?php if ( $post_ids ) {
 326      global $wp_query;
 327      $wp_query->in_the_loop = true;  // Fake being in the loop.
 328  
 329      // fetch 20 posts at a time rather than loading the entire table into memory
 330      while ( $next_posts = array_splice( $post_ids, 0, 20 ) ) {
 331      $where = "WHERE ID IN (" . join( ',', $next_posts ) . ")";
 332      $posts = $wpdb->get_results( "SELECT * FROM $wpdb->posts $where ORDER BY post_date_gmt ASC" );
 333  
 334      // Begin Loop
 335      foreach ($posts as $post) {
 336      setup_postdata( $post );
 337  
 338      $is_sticky = 0;
 339      if ( is_sticky( $post->ID ) )
 340          $is_sticky = 1;
 341  
 342      ?>
 343      <item>
 344          <title><?php echo apply_filters( 'the_title_rss', $post->post_title ); ?></title>
 345          <link><?php the_permalink_rss() ?></link>
 346          <pubDate><?php echo mysql2date( 'D, d M Y H:i:s +0000', get_post_time( 'Y-m-d H:i:s', true ), false ); ?></pubDate>
 347          <dc:creator><?php echo wxr_cdata( get_the_author() ); ?></dc:creator>
 348          <?php wxr_post_taxonomy() ?>
 349  
 350          <guid isPermaLink="false"><?php esc_url( the_guid() ); ?></guid>
 351          <description></description>
 352          <content:encoded><?php echo wxr_cdata( apply_filters( 'the_content_export', $post->post_content ) ); ?></content:encoded>
 353          <excerpt:encoded><?php echo wxr_cdata( apply_filters( 'the_excerpt_export', $post->post_excerpt ) ); ?></excerpt:encoded>
 354          <wp:post_id><?php echo $post->ID; ?></wp:post_id>
 355          <wp:post_date><?php echo $post->post_date; ?></wp:post_date>
 356          <wp:post_date_gmt><?php echo $post->post_date_gmt; ?></wp:post_date_gmt>
 357          <wp:comment_status><?php echo $post->comment_status; ?></wp:comment_status>
 358          <wp:ping_status><?php echo $post->ping_status; ?></wp:ping_status>
 359          <wp:post_name><?php echo $post->post_name; ?></wp:post_name>
 360          <wp:status><?php echo $post->post_status; ?></wp:status>
 361          <wp:post_parent><?php echo $post->post_parent; ?></wp:post_parent>
 362          <wp:menu_order><?php echo $post->menu_order; ?></wp:menu_order>
 363          <wp:post_type><?php echo $post->post_type; ?></wp:post_type>
 364          <wp:post_password><?php echo $post->post_password; ?></wp:post_password>
 365          <wp:is_sticky><?php echo $is_sticky; ?></wp:is_sticky>
 366          <?php
 367          if ( $post->post_type == 'attachment' ) { ?>
 368          <wp:attachment_url><?php echo wp_get_attachment_url( $post->ID ); ?></wp:attachment_url>
 369          <?php } ?>
 370          <?php
 371          $postmeta = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->postmeta WHERE post_id = %d", $post->ID ) );
 372          if ( $postmeta ) {
 373          ?>
 374          <?php foreach( $postmeta as $meta ) { ?>
 375          <wp:postmeta>
 376          <wp:meta_key><?php echo $meta->meta_key; ?></wp:meta_key>
 377          <wp:meta_value><?php echo wxr_cdata( $meta->meta_value ); ?></wp:meta_value>
 378          </wp:postmeta>
 379          <?php } ?>
 380          <?php } ?>
 381          <?php
 382          $comments = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d", $post->ID ) );
 383          if ( $comments ) { foreach ( $comments as $c ) { ?>
 384          <wp:comment>
 385          <wp:comment_id><?php echo $c->comment_ID; ?></wp:comment_id>
 386          <wp:comment_author><?php echo wxr_cdata( $c->comment_author ); ?></wp:comment_author>
 387          <wp:comment_author_email><?php echo $c->comment_author_email; ?></wp:comment_author_email>
 388          <wp:comment_author_url><?php echo esc_url_raw( $c->comment_author_url ); ?></wp:comment_author_url>
 389          <wp:comment_author_IP><?php echo $c->comment_author_IP; ?></wp:comment_author_IP>
 390          <wp:comment_date><?php echo $c->comment_date; ?></wp:comment_date>
 391          <wp:comment_date_gmt><?php echo $c->comment_date_gmt; ?></wp:comment_date_gmt>
 392          <wp:comment_content><?php echo wxr_cdata( $c->comment_content ) ?></wp:comment_content>
 393          <wp:comment_approved><?php echo $c->comment_approved; ?></wp:comment_approved>
 394          <wp:comment_type><?php echo $c->comment_type; ?></wp:comment_type>
 395          <wp:comment_parent><?php echo $c->comment_parent; ?></wp:comment_parent>
 396          <wp:comment_user_id><?php echo $c->user_id; ?></wp:comment_user_id>
 397          </wp:comment>
 398          <?php } } ?>
 399      </item>
 400      <?php
 401      }
 402      }
 403  } ?>
 404  </channel>
 405  </rss>
 406  <?php
 407  }
 408  
 409  ?>