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   1  <?php
   2  
   3  function export_wp($author='') {
   4  global $wpdb, $post_ids, $post;
   5  
   6  do_action('export_wp');
   7  
   8  $filename = 'wordpress.' . date('Y-m-d') . '.xml';
   9  
  10  header('Content-Description: File Transfer');
  11  header("Content-Disposition: attachment; filename=$filename");
  12  header('Content-Type: text/xml; charset=' . get_option('blog_charset'), true);
  13  
  14  $where = '';
  15  if ( $author and $author != 'all' ) {
  16      $author_id = (int) $author;
  17      $where = " WHERE post_author = '$author_id' ";
  18  }
  19  
  20  // grab a snapshot of post IDs, just in case it changes during the export
  21  $post_ids = $wpdb->get_col("SELECT ID FROM $wpdb->posts $where ORDER BY post_date_gmt ASC");
  22  
  23  $categories = (array) get_categories('get=all');
  24  $tags = (array) get_tags('get=all');
  25  
  26  function wxr_missing_parents($categories) {
  27      if ( !is_array($categories) || empty($categories) )
  28          return array();
  29  
  30      foreach ( $categories as $category )
  31          $parents[$category->term_id] = $category->parent;
  32  
  33      $parents = array_unique(array_diff($parents, array_keys($parents)));
  34  
  35      if ( $zero = array_search('0', $parents) )
  36          unset($parents[$zero]);
  37  
  38      return $parents;
  39  }
  40  
  41  while ( $parents = wxr_missing_parents($categories) ) {
  42      $found_parents = get_categories("include=" . join(', ', $parents));
  43      if ( is_array($found_parents) && count($found_parents) )
  44          $categories = array_merge($categories, $found_parents);
  45      else
  46          break;
  47  }
  48  
  49  // Put them in order to be inserted with no child going before its parent
  50  $pass = 0;
  51  $passes = 1000 + count($categories);
  52  while ( ( $cat = array_shift($categories) ) && ++$pass < $passes ) {
  53      if ( $cat->parent == 0 || isset($cats[$cat->parent]) ) {
  54          $cats[$cat->term_id] = $cat;
  55      } else {
  56          $categories[] = $cat;
  57      }
  58  }
  59  unset($categories);
  60  
  61  function wxr_cdata($str) {
  62      if ( seems_utf8($str) == false )
  63          $str = utf8_encode($str);
  64  
  65      // $str = ent2ncr(wp_specialchars($str));
  66  
  67      $str = "<![CDATA[$str" . ( ( substr($str, -1) == ']' ) ? ' ' : '') . "]]>";
  68  
  69      return $str;
  70  }
  71  
  72  function wxr_cat_name($c) {
  73      if ( empty($c->name) )
  74          return;
  75  
  76      echo '<wp:cat_name>' . wxr_cdata($c->name) . '</wp:cat_name>';
  77  }
  78  
  79  function wxr_category_description($c) {
  80      if ( empty($c->description) )
  81          return;
  82  
  83      echo '<wp:category_description>' . wxr_cdata($c->description) . '</wp:category_description>';
  84  }
  85  
  86  function wxr_tag_name($t) {
  87      if ( empty($t->name) )
  88          return;
  89  
  90      echo '<wp:tag_name>' . wxr_cdata($t->name) . '</wp:tag_name>';
  91  }
  92  
  93  function wxr_tag_description($t) {
  94      if ( empty($t->description) )
  95          return;
  96  
  97      echo '<wp:tag_description>' . wxr_cdata($t->description) . '</wp:tag_description>';
  98  }
  99  
 100  function wxr_post_taxonomy() {
 101      $categories = get_the_category();
 102      $tags = get_the_tags();
 103      $the_list = '';
 104      $filter = 'rss';
 105  
 106      if ( !empty($categories) ) foreach ( (array) $categories as $category ) {
 107          $cat_name = sanitize_term_field('name', $category->name, $category->term_id, 'category', $filter);
 108          $the_list .= "\n\t\t<category><![CDATA[$cat_name]]></category>\n";
 109      }
 110  
 111      if ( !empty($tags) ) foreach ( (array) $tags as $tag ) {
 112          $tag_name = sanitize_term_field('name', $tag->name, $tag->term_id, 'post_tag', $filter);
 113          $the_list .= "\n\t\t<category domain=\"tag\"><![CDATA[$tag_name]]></category>\n";
 114      }
 115  
 116      echo $the_list;
 117  }
 118  
 119  echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . '"?' . ">\n";
 120  
 121  ?>
 122  <!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your blog. -->
 123  <!-- It contains information about your blog's posts, comments, and categories. -->
 124  <!-- You may use this file to transfer that content from one site to another. -->
 125  <!-- This file is not intended to serve as a complete backup of your blog. -->
 126  
 127  <!-- To import this information into a WordPress blog follow these steps. -->
 128  <!-- 1. Log into that blog as an administrator. -->
 129  <!-- 2. Go to Manage: Import in the blog's admin panels. -->
 130  <!-- 3. Choose "WordPress" from the list. -->
 131  <!-- 4. Upload this file using the form provided on that page. -->
 132  <!-- 5. You will first be asked to map the authors in this export file to users -->
 133  <!--    on the blog.  For each author, you may choose to map to an -->
 134  <!--    existing user on the blog or to create a new user -->
 135  <!-- 6. WordPress will then import each of the posts, comments, and categories -->
 136  <!--    contained in this file into your blog -->
 137  
 138  <?php the_generator('export');?>
 139  <rss version="2.0"
 140      xmlns:content="http://purl.org/rss/1.0/modules/content/"
 141      xmlns:wfw="http://wellformedweb.org/CommentAPI/"
 142      xmlns:dc="http://purl.org/dc/elements/1.1/"
 143      xmlns:wp="http://wordpress.org/export/1.0/"
 144  >
 145  
 146  <channel>
 147      <title><?php bloginfo_rss('name'); ?></title>
 148      <link><?php bloginfo_rss('url') ?></link>
 149      <description><?php bloginfo_rss("description") ?></description>
 150      <pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_lastpostmodified('GMT'), false); ?></pubDate>
 151      <generator>http://wordpress.org/?v=<?php bloginfo_rss('version'); ?></generator>
 152      <language><?php echo get_option('rss_language'); ?></language>
 153  <?php if ( $cats ) : foreach ( $cats as $c ) : ?>
 154      <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>
 155  <?php endforeach; endif; ?>
 156  <?php if ( $tags ) : foreach ( $tags as $t ) : ?>
 157      <wp:tag><wp:tag_slug><?php echo $t->slug; ?></wp:tag_slug><?php wxr_tag_name($t); ?><?php wxr_tag_description($t); ?></wp:tag>
 158  <?php endforeach; endif; ?>
 159      <?php do_action('rss2_head'); ?>
 160      <?php if ($post_ids) {
 161          global $wp_query;
 162          $wp_query->in_the_loop = true;  // Fake being in the loop.
 163          // fetch 20 posts at a time rather than loading the entire table into memory
 164          while ( $next_posts = array_splice($post_ids, 0, 20) ) {
 165              $where = "WHERE ID IN (".join(',', $next_posts).")";
 166              $posts = $wpdb->get_results("SELECT * FROM $wpdb->posts $where ORDER BY post_date_gmt ASC");
 167                  foreach ($posts as $post) {
 168              setup_postdata($post); ?>
 169  <item>
 170  <title><?php the_title_rss() ?></title>
 171  <link><?php the_permalink_rss() ?></link>
 172  <pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_post_time('Y-m-d H:i:s', true), false); ?></pubDate>
 173  <dc:creator><?php the_author() ?></dc:creator>
 174  <?php wxr_post_taxonomy() ?>
 175  
 176  <guid isPermaLink="false"><?php the_guid(); ?></guid>
 177  <description></description>
 178  <content:encoded><![CDATA[<?php echo $post->post_content ?>]]></content:encoded>
 179  <wp:post_id><?php echo $post->ID; ?></wp:post_id>
 180  <wp:post_date><?php echo $post->post_date; ?></wp:post_date>
 181  <wp:post_date_gmt><?php echo $post->post_date_gmt; ?></wp:post_date_gmt>
 182  <wp:comment_status><?php echo $post->comment_status; ?></wp:comment_status>
 183  <wp:ping_status><?php echo $post->ping_status; ?></wp:ping_status>
 184  <wp:post_name><?php echo $post->post_name; ?></wp:post_name>
 185  <wp:status><?php echo $post->post_status; ?></wp:status>
 186  <wp:post_parent><?php echo $post->post_parent; ?></wp:post_parent>
 187  <wp:menu_order><?php echo $post->menu_order; ?></wp:menu_order>
 188  <wp:post_type><?php echo $post->post_type; ?></wp:post_type>
 189  <?php
 190  $postmeta = $wpdb->get_results("SELECT * FROM $wpdb->postmeta WHERE post_id = $post->ID");
 191  if ( $postmeta ) {
 192  ?>
 193  <?php foreach( $postmeta as $meta ) { ?>
 194  <wp:postmeta>
 195  <wp:meta_key><?php echo $meta->meta_key; ?></wp:meta_key>
 196  <wp:meta_value><?Php echo $meta->meta_value; ?></wp:meta_value>
 197  </wp:postmeta>
 198  <?php } ?>
 199  <?php } ?>
 200  <?php
 201  $comments = $wpdb->get_results("SELECT * FROM $wpdb->comments WHERE comment_post_ID = $post->ID");
 202  if ( $comments ) { foreach ( $comments as $c ) { ?>
 203  <wp:comment>
 204  <wp:comment_id><?php echo $c->comment_ID; ?></wp:comment_id>
 205  <wp:comment_author><?php echo wxr_cdata($c->comment_author); ?></wp:comment_author>
 206  <wp:comment_author_email><?php echo $c->comment_author_email; ?></wp:comment_author_email>
 207  <wp:comment_author_url><?php echo $c->comment_author_url; ?></wp:comment_author_url>
 208  <wp:comment_author_IP><?php echo $c->comment_author_IP; ?></wp:comment_author_IP>
 209  <wp:comment_date><?php echo $c->comment_date; ?></wp:comment_date>
 210  <wp:comment_date_gmt><?php echo $c->comment_date_gmt; ?></wp:comment_date_gmt>
 211  <wp:comment_content><?php echo $c->comment_content; ?></wp:comment_content>
 212  <wp:comment_approved><?php echo $c->comment_approved; ?></wp:comment_approved>
 213  <wp:comment_type><?php echo $c->comment_type; ?></wp:comment_type>
 214  <wp:comment_parent><?php echo $c->comment_parent; ?></wp:comment_parent>
 215  </wp:comment>
 216  <?php } } ?>
 217      </item>
 218  <?php } } } ?>
 219  </channel>
 220  </rss>
 221  <?php
 222  }
 223  
 224  ?>