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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 $author
  25   */
  26  function export_wp($author='') {
  27  global $wpdb, $post_ids, $post, $wp_taxonomies;
  28  
  29  do_action('export_wp');
  30  
  31  $filename = 'wordpress.' . date('Y-m-d') . '.xml';
  32  
  33  header('Content-Description: File Transfer');
  34  header("Content-Disposition: attachment; filename=$filename");
  35  header('Content-Type: text/xml; charset=' . get_option('blog_charset'), true);
  36  
  37  $where = '';
  38  if ( $author and $author != 'all' ) {
  39      $author_id = (int) $author;
  40      $where = $wpdb->prepare(" WHERE post_author = %d ", $author_id);
  41  }
  42  
  43  // grab a snapshot of post IDs, just in case it changes during the export
  44  $post_ids = $wpdb->get_col("SELECT ID FROM $wpdb->posts $where ORDER BY post_date_gmt ASC");
  45  
  46  $categories = (array) get_categories('get=all');
  47  $tags = (array) get_tags('get=all');
  48  
  49  $custom_taxonomies = $wp_taxonomies;
  50  unset($custom_taxonomies['category']);
  51  unset($custom_taxonomies['post_tag']);
  52  unset($custom_taxonomies['link_category']);
  53  $custom_taxonomies = array_keys($custom_taxonomies);
  54  $terms = (array) get_terms($custom_taxonomies, 'get=all');
  55  
  56  /**
  57   * {@internal Missing Short Description}}
  58   *
  59   * @since unknown
  60   *
  61   * @param unknown_type $categories
  62   */
  63  function wxr_missing_parents($categories) {
  64      if ( !is_array($categories) || empty($categories) )
  65          return array();
  66  
  67      foreach ( $categories as $category )
  68          $parents[$category->term_id] = $category->parent;
  69  
  70      $parents = array_unique(array_diff($parents, array_keys($parents)));
  71  
  72      if ( $zero = array_search('0', $parents) )
  73          unset($parents[$zero]);
  74  
  75      return $parents;
  76  }
  77  
  78  while ( $parents = wxr_missing_parents($categories) ) {
  79      $found_parents = get_categories("include=" . join(', ', $parents));
  80      if ( is_array($found_parents) && count($found_parents) )
  81          $categories = array_merge($categories, $found_parents);
  82      else
  83          break;
  84  }
  85  
  86  // Put them in order to be inserted with no child going before its parent
  87  $pass = 0;
  88  $passes = 1000 + count($categories);
  89  while ( ( $cat = array_shift($categories) ) && ++$pass < $passes ) {
  90      if ( $cat->parent == 0 || isset($cats[$cat->parent]) ) {
  91          $cats[$cat->term_id] = $cat;
  92      } else {
  93          $categories[] = $cat;
  94      }
  95  }
  96  unset($categories);
  97  
  98  /**
  99   * Place string in CDATA tag.
 100   *
 101   * @since unknown
 102   *
 103   * @param string $str String to place in XML CDATA tag.
 104   */
 105  function wxr_cdata($str) {
 106      if ( seems_utf8($str) == false )
 107          $str = utf8_encode($str);
 108  
 109      // $str = ent2ncr(esc_html($str));
 110  
 111      $str = "<![CDATA[$str" . ( ( substr($str, -1) == ']' ) ? ' ' : '') . "]]>";
 112  
 113      return $str;
 114  }
 115  
 116  /**
 117   * {@internal Missing Short Description}}
 118   *
 119   * @since unknown
 120   *
 121   * @return string Site URL.
 122   */
 123  function wxr_site_url() {
 124      global $current_site;
 125  
 126      // mu: the base url
 127      if ( isset($current_site->domain) ) {
 128          return 'http://'.$current_site->domain.$current_site->path;
 129      }
 130      // wp: the blog url
 131      else {
 132          return get_bloginfo_rss('url');
 133      }
 134  }
 135  
 136  /**
 137   * {@internal Missing Short Description}}
 138   *
 139   * @since unknown
 140   *
 141   * @param object $c Category Object
 142   */
 143  function wxr_cat_name($c) {
 144      if ( empty($c->name) )
 145          return;
 146  
 147      echo '<wp:cat_name>' . wxr_cdata($c->name) . '</wp:cat_name>';
 148  }
 149  
 150  /**
 151   * {@internal Missing Short Description}}
 152   *
 153   * @since unknown
 154   *
 155   * @param object $c Category Object
 156   */
 157  function wxr_category_description($c) {
 158      if ( empty($c->description) )
 159          return;
 160  
 161      echo '<wp:category_description>' . wxr_cdata($c->description) . '</wp:category_description>';
 162  }
 163  
 164  /**
 165   * {@internal Missing Short Description}}
 166   *
 167   * @since unknown
 168   *
 169   * @param object $t Tag Object
 170   */
 171  function wxr_tag_name($t) {
 172      if ( empty($t->name) )
 173          return;
 174  
 175      echo '<wp:tag_name>' . wxr_cdata($t->name) . '</wp:tag_name>';
 176  }
 177  
 178  /**
 179   * {@internal Missing Short Description}}
 180   *
 181   * @since unknown
 182   *
 183   * @param object $t Tag Object
 184   */
 185  function wxr_tag_description($t) {
 186      if ( empty($t->description) )
 187          return;
 188  
 189      echo '<wp:tag_description>' . wxr_cdata($t->description) . '</wp:tag_description>';
 190  }
 191  
 192  /**
 193   * {@internal Missing Short Description}}
 194   *
 195   * @since unknown
 196   *
 197   * @param object $t Term Object
 198   */
 199  function wxr_term_name($t) {
 200      if ( empty($t->name) )
 201          return;
 202  
 203      echo '<wp:term_name>' . wxr_cdata($t->name) . '</wp:term_name>';
 204  }
 205  
 206  /**
 207   * {@internal Missing Short Description}}
 208   *
 209   * @since unknown
 210   *
 211   * @param object $t Term Object
 212   */
 213  function wxr_term_description($t) {
 214      if ( empty($t->description) )
 215          return;
 216  
 217      echo '<wp:term_description>' . wxr_cdata($t->description) . '</wp:term_description>';
 218  }
 219  
 220  /**
 221   * {@internal Missing Short Description}}
 222   *
 223   * @since unknown
 224   */
 225  function wxr_post_taxonomy() {
 226      $categories = get_the_category();
 227      $tags = get_the_tags();
 228      $the_list = '';
 229      $filter = 'rss';
 230  
 231      if ( !empty($categories) ) foreach ( (array) $categories as $category ) {
 232          $cat_name = sanitize_term_field('name', $category->name, $category->term_id, 'category', $filter);
 233          // for backwards compatibility
 234          $the_list .= "\n\t\t<category><![CDATA[$cat_name]]></category>\n";
 235          // forwards compatibility: use a unique identifier for each cat to avoid clashes
 236          // http://trac.wordpress.org/ticket/5447
 237          $the_list .= "\n\t\t<category domain=\"category\" nicename=\"{$category->slug}\"><![CDATA[$cat_name]]></category>\n";
 238      }
 239  
 240      if ( !empty($tags) ) foreach ( (array) $tags as $tag ) {
 241          $tag_name = sanitize_term_field('name', $tag->name, $tag->term_id, 'post_tag', $filter);
 242          $the_list .= "\n\t\t<category domain=\"tag\"><![CDATA[$tag_name]]></category>\n";
 243          // forwards compatibility as above
 244          $the_list .= "\n\t\t<category domain=\"tag\" nicename=\"{$tag->slug}\"><![CDATA[$tag_name]]></category>\n";
 245      }
 246  
 247      echo $the_list;
 248  }
 249  
 250  echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . '"?' . ">\n";
 251  
 252  ?>
 253  <!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your blog. -->
 254  <!-- It contains information about your blog's posts, comments, and categories. -->
 255  <!-- You may use this file to transfer that content from one site to another. -->
 256  <!-- This file is not intended to serve as a complete backup of your blog. -->
 257  
 258  <!-- To import this information into a WordPress blog follow these steps. -->
 259  <!-- 1. Log in to that blog as an administrator. -->
 260  <!-- 2. Go to Tools: Import in the blog's admin panels (or Manage: Import in older versions of WordPress). -->
 261  <!-- 3. Choose "WordPress" from the list. -->
 262  <!-- 4. Upload this file using the form provided on that page. -->
 263  <!-- 5. You will first be asked to map the authors in this export file to users -->
 264  <!--    on the blog.  For each author, you may choose to map to an -->
 265  <!--    existing user on the blog or to create a new user -->
 266  <!-- 6. WordPress will then import each of the posts, comments, and categories -->
 267  <!--    contained in this file into your blog -->
 268  
 269  <?php the_generator('export');?>
 270  <rss version="2.0"
 271      xmlns:excerpt="http://wordpress.org/export/<?php echo WXR_VERSION; ?>/excerpt/"
 272      xmlns:content="http://purl.org/rss/1.0/modules/content/"
 273      xmlns:wfw="http://wellformedweb.org/CommentAPI/"
 274      xmlns:dc="http://purl.org/dc/elements/1.1/"
 275      xmlns:wp="http://wordpress.org/export/<?php echo WXR_VERSION; ?>/"
 276  >
 277  
 278  <channel>
 279      <title><?php bloginfo_rss('name'); ?></title>
 280      <link><?php bloginfo_rss('url') ?></link>
 281      <description><?php bloginfo_rss("description") ?></description>
 282      <pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_lastpostmodified('GMT'), false); ?></pubDate>
 283      <generator>http://wordpress.org/?v=<?php bloginfo_rss('version'); ?></generator>
 284      <language><?php echo get_option('rss_language'); ?></language>
 285      <wp:wxr_version><?php echo WXR_VERSION; ?></wp:wxr_version>
 286      <wp:base_site_url><?php echo wxr_site_url(); ?></wp:base_site_url>
 287      <wp:base_blog_url><?php bloginfo_rss('url'); ?></wp:base_blog_url>
 288  <?php if ( $cats ) : foreach ( $cats as $c ) : ?>
 289      <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>
 290  <?php endforeach; endif; ?>
 291  <?php if ( $tags ) : foreach ( $tags as $t ) : ?>
 292      <wp:tag><wp:tag_slug><?php echo $t->slug; ?></wp:tag_slug><?php wxr_tag_name($t); ?><?php wxr_tag_description($t); ?></wp:tag>
 293  <?php endforeach; endif; ?>
 294  <?php if ( $terms ) : foreach ( $terms as $t ) : ?>
 295      <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>
 296  <?php endforeach; endif; ?>
 297      <?php do_action('rss2_head'); ?>
 298      <?php if ($post_ids) {
 299          global $wp_query;
 300          $wp_query->in_the_loop = true;  // Fake being in the loop.
 301          // fetch 20 posts at a time rather than loading the entire table into memory
 302          while ( $next_posts = array_splice($post_ids, 0, 20) ) {
 303              $where = "WHERE ID IN (".join(',', $next_posts).")";
 304              $posts = $wpdb->get_results("SELECT * FROM $wpdb->posts $where ORDER BY post_date_gmt ASC");
 305                  foreach ($posts as $post) {
 306              // Don't export revisions.  They bloat the export.
 307              if ( 'revision' == $post->post_type )
 308                  continue;
 309              setup_postdata($post);
 310  
 311              $is_sticky = 0;
 312              if ( is_sticky( $post->ID ) )
 313                  $is_sticky = 1;
 314  
 315  ?>
 316  <item>
 317  <title><?php echo apply_filters('the_title_rss', $post->post_title); ?></title>
 318  <link><?php the_permalink_rss() ?></link>
 319  <pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_post_time('Y-m-d H:i:s', true), false); ?></pubDate>
 320  <dc:creator><?php echo wxr_cdata(get_the_author()); ?></dc:creator>
 321  <?php wxr_post_taxonomy() ?>
 322  
 323  <guid isPermaLink="false"><?php the_guid(); ?></guid>
 324  <description></description>
 325  <content:encoded><?php echo wxr_cdata( apply_filters('the_content_export', $post->post_content) ); ?></content:encoded>
 326  <excerpt:encoded><?php echo wxr_cdata( apply_filters('the_excerpt_export', $post->post_excerpt) ); ?></excerpt:encoded>
 327  <wp:post_id><?php echo $post->ID; ?></wp:post_id>
 328  <wp:post_date><?php echo $post->post_date; ?></wp:post_date>
 329  <wp:post_date_gmt><?php echo $post->post_date_gmt; ?></wp:post_date_gmt>
 330  <wp:comment_status><?php echo $post->comment_status; ?></wp:comment_status>
 331  <wp:ping_status><?php echo $post->ping_status; ?></wp:ping_status>
 332  <wp:post_name><?php echo $post->post_name; ?></wp:post_name>
 333  <wp:status><?php echo $post->post_status; ?></wp:status>
 334  <wp:post_parent><?php echo $post->post_parent; ?></wp:post_parent>
 335  <wp:menu_order><?php echo $post->menu_order; ?></wp:menu_order>
 336  <wp:post_type><?php echo $post->post_type; ?></wp:post_type>
 337  <wp:post_password><?php echo $post->post_password; ?></wp:post_password>
 338  <wp:is_sticky><?php echo $is_sticky; ?></wp:is_sticky>
 339  <?php
 340  if ($post->post_type == 'attachment') { ?>
 341  <wp:attachment_url><?php echo wp_get_attachment_url($post->ID); ?></wp:attachment_url>
 342  <?php } ?>
 343  <?php
 344  $postmeta = $wpdb->get_results( $wpdb->prepare("SELECT * FROM $wpdb->postmeta WHERE post_id = %d", $post->ID) );
 345  if ( $postmeta ) {
 346  ?>
 347  <?php foreach( $postmeta as $meta ) { ?>
 348  <wp:postmeta>
 349  <wp:meta_key><?php echo $meta->meta_key; ?></wp:meta_key>
 350  <wp:meta_value><?Php echo $meta->meta_value; ?></wp:meta_value>
 351  </wp:postmeta>
 352  <?php } ?>
 353  <?php } ?>
 354  <?php
 355  $comments = $wpdb->get_results( $wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d", $post->ID) );
 356  if ( $comments ) { foreach ( $comments as $c ) { ?>
 357  <wp:comment>
 358  <wp:comment_id><?php echo $c->comment_ID; ?></wp:comment_id>
 359  <wp:comment_author><?php echo wxr_cdata($c->comment_author); ?></wp:comment_author>
 360  <wp:comment_author_email><?php echo $c->comment_author_email; ?></wp:comment_author_email>
 361  <wp:comment_author_url><?php echo esc_url_raw( $c->comment_author_url ); ?></wp:comment_author_url>
 362  <wp:comment_author_IP><?php echo $c->comment_author_IP; ?></wp:comment_author_IP>
 363  <wp:comment_date><?php echo $c->comment_date; ?></wp:comment_date>
 364  <wp:comment_date_gmt><?php echo $c->comment_date_gmt; ?></wp:comment_date_gmt>
 365  <wp:comment_content><?php echo wxr_cdata($c->comment_content) ?></wp:comment_content>
 366  <wp:comment_approved><?php echo $c->comment_approved; ?></wp:comment_approved>
 367  <wp:comment_type><?php echo $c->comment_type; ?></wp:comment_type>
 368  <wp:comment_parent><?php echo $c->comment_parent; ?></wp:comment_parent>
 369  <wp:comment_user_id><?php echo $c->user_id; ?></wp:comment_user_id>
 370  </wp:comment>
 371  <?php } } ?>
 372      </item>
 373  <?php } } } ?>
 374  </channel>
 375  </rss>
 376  <?php
 377  }
 378  
 379  ?>