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/wp-admin/ -> export.php (source)

   1  <?php
   2  /**
   3   * WordPress Export Administration Screen
   4   *
   5   * @package WordPress
   6   * @subpackage Administration
   7   */
   8  
   9  /** Load WordPress Bootstrap */
  10  require_once( dirname( __FILE__ ) . '/admin.php' );
  11  
  12  if ( ! current_user_can( 'export' ) ) {
  13      wp_die( __( 'Sorry, you are not allowed to export the content of this site.' ) );
  14  }
  15  
  16  /** Load WordPress export API */
  17  require_once( ABSPATH . 'wp-admin/includes/export.php' );
  18  $title = __( 'Export' );
  19  
  20  /**
  21   * Display JavaScript on the page.
  22   *
  23   * @since 3.5.0
  24   */
  25  function export_add_js() {
  26      ?>
  27  <script type="text/javascript">
  28      jQuery(document).ready(function($){
  29          var form = $('#export-filters'),
  30              filters = form.find('.export-filters');
  31          filters.hide();
  32          form.find('input:radio').change(function() {
  33              filters.slideUp('fast');
  34              switch ( $(this).val() ) {
  35                  case 'attachment': $('#attachment-filters').slideDown(); break;
  36                  case 'posts': $('#post-filters').slideDown(); break;
  37                  case 'pages': $('#page-filters').slideDown(); break;
  38              }
  39          });
  40      });
  41  </script>
  42      <?php
  43  }
  44  add_action( 'admin_head', 'export_add_js' );
  45  
  46  get_current_screen()->add_help_tab(
  47      array(
  48          'id'      => 'overview',
  49          'title'   => __( 'Overview' ),
  50          'content' => '<p>' . __( 'You can export a file of your site&#8217;s content in order to import it into another installation or platform. The export file will be an XML file format called WXR. Posts, pages, comments, custom fields, categories, and tags can be included. You can choose for the WXR file to include only certain posts or pages by setting the dropdown filters to limit the export by category, author, date range by month, or publishing status.' ) . '</p>' .
  51              '<p>' . __( 'Once generated, your WXR file can be imported by another WordPress site or by another blogging platform able to access this format.' ) . '</p>',
  52      )
  53  );
  54  
  55  get_current_screen()->set_help_sidebar(
  56      '<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
  57      '<p>' . __( '<a href="https://wordpress.org/support/article/tools-export-screen/">Documentation on Export</a>' ) . '</p>' .
  58      '<p>' . __( '<a href="https://wordpress.org/support/">Support</a>' ) . '</p>'
  59  );
  60  
  61  // If the 'download' URL parameter is set, a WXR export file is baked and returned.
  62  if ( isset( $_GET['download'] ) ) {
  63      $args = array();
  64  
  65      if ( ! isset( $_GET['content'] ) || 'all' == $_GET['content'] ) {
  66          $args['content'] = 'all';
  67      } elseif ( 'posts' == $_GET['content'] ) {
  68          $args['content'] = 'post';
  69  
  70          if ( $_GET['cat'] ) {
  71              $args['category'] = (int) $_GET['cat'];
  72          }
  73  
  74          if ( $_GET['post_author'] ) {
  75              $args['author'] = (int) $_GET['post_author'];
  76          }
  77  
  78          if ( $_GET['post_start_date'] || $_GET['post_end_date'] ) {
  79              $args['start_date'] = $_GET['post_start_date'];
  80              $args['end_date']   = $_GET['post_end_date'];
  81          }
  82  
  83          if ( $_GET['post_status'] ) {
  84              $args['status'] = $_GET['post_status'];
  85          }
  86      } elseif ( 'pages' == $_GET['content'] ) {
  87          $args['content'] = 'page';
  88  
  89          if ( $_GET['page_author'] ) {
  90              $args['author'] = (int) $_GET['page_author'];
  91          }
  92  
  93          if ( $_GET['page_start_date'] || $_GET['page_end_date'] ) {
  94              $args['start_date'] = $_GET['page_start_date'];
  95              $args['end_date']   = $_GET['page_end_date'];
  96          }
  97  
  98          if ( $_GET['page_status'] ) {
  99              $args['status'] = $_GET['page_status'];
 100          }
 101      } elseif ( 'attachment' == $_GET['content'] ) {
 102          $args['content'] = 'attachment';
 103  
 104          if ( $_GET['attachment_start_date'] || $_GET['attachment_end_date'] ) {
 105              $args['start_date'] = $_GET['attachment_start_date'];
 106              $args['end_date']   = $_GET['attachment_end_date'];
 107          }
 108      } else {
 109          $args['content'] = $_GET['content'];
 110      }
 111  
 112      /**
 113       * Filters the export args.
 114       *
 115       * @since 3.5.0
 116       *
 117       * @param array $args The arguments to send to the exporter.
 118       */
 119      $args = apply_filters( 'export_args', $args );
 120  
 121      export_wp( $args );
 122      die();
 123  }
 124  
 125  require_once( ABSPATH . 'wp-admin/admin-header.php' );
 126  
 127  /**
 128   * Create the date options fields for exporting a given post type.
 129   *
 130   * @global wpdb      $wpdb      WordPress database abstraction object.
 131   * @global WP_Locale $wp_locale WordPress date and time locale object.
 132   *
 133   * @since 3.1.0
 134   *
 135   * @param string $post_type The post type. Default 'post'.
 136   */
 137  function export_date_options( $post_type = 'post' ) {
 138      global $wpdb, $wp_locale;
 139  
 140      $months = $wpdb->get_results(
 141          $wpdb->prepare(
 142              "
 143          SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month
 144          FROM $wpdb->posts
 145          WHERE post_type = %s AND post_status != 'auto-draft'
 146          ORDER BY post_date DESC
 147      ",
 148              $post_type
 149          )
 150      );
 151  
 152      $month_count = count( $months );
 153      if ( ! $month_count || ( 1 == $month_count && 0 == $months[0]->month ) ) {
 154          return;
 155      }
 156  
 157      foreach ( $months as $date ) {
 158          if ( 0 == $date->year ) {
 159              continue;
 160          }
 161  
 162          $month = zeroise( $date->month, 2 );
 163          echo '<option value="' . $date->year . '-' . $month . '">' . $wp_locale->get_month( $month ) . ' ' . $date->year . '</option>';
 164      }
 165  }
 166  ?>
 167  
 168  <div class="wrap">
 169  <h1><?php echo esc_html( $title ); ?></h1>
 170  
 171  <p><?php _e( 'When you click the button below WordPress will create an XML file for you to save to your computer.' ); ?></p>
 172  <p><?php _e( 'This format, which we call WordPress eXtended RSS or WXR, will contain your posts, pages, comments, custom fields, categories, and tags.' ); ?></p>
 173  <p><?php _e( 'Once you&#8217;ve saved the download file, you can use the Import function in another WordPress installation to import the content from this site.' ); ?></p>
 174  
 175  <h2><?php _e( 'Choose what to export' ); ?></h2>
 176  <form method="get" id="export-filters">
 177  <fieldset>
 178  <legend class="screen-reader-text"><?php _e( 'Content to export' ); ?></legend>
 179  <input type="hidden" name="download" value="true" />
 180  <p><label><input type="radio" name="content" value="all" checked="checked" aria-describedby="all-content-desc" /> <?php _e( 'All content' ); ?></label></p>
 181  <p class="description" id="all-content-desc"><?php _e( 'This will contain all of your posts, pages, comments, custom fields, terms, navigation menus, and custom posts.' ); ?></p>
 182  
 183  <p><label><input type="radio" name="content" value="posts" /> <?php _e( 'Posts' ); ?></label></p>
 184  <ul id="post-filters" class="export-filters">
 185      <li>
 186          <label><span class="label-responsive"><?php _e( 'Categories:' ); ?></span>
 187          <?php wp_dropdown_categories( array( 'show_option_all' => __( 'All' ) ) ); ?>
 188          </label>
 189      </li>
 190      <li>
 191          <label><span class="label-responsive"><?php _e( 'Authors:' ); ?></span>
 192          <?php
 193          $authors = $wpdb->get_col( "SELECT DISTINCT post_author FROM {$wpdb->posts} WHERE post_type = 'post'" );
 194          wp_dropdown_users(
 195              array(
 196                  'include'         => $authors,
 197                  'name'            => 'post_author',
 198                  'multi'           => true,
 199                  'show_option_all' => __( 'All' ),
 200                  'show'            => 'display_name_with_login',
 201              )
 202          );
 203          ?>
 204          </label>
 205      </li>
 206      <li>
 207          <fieldset>
 208          <legend class="screen-reader-text"><?php _e( 'Date range:' ); ?></legend>
 209          <label for="post-start-date" class="label-responsive"><?php _e( 'Start date:' ); ?></label>
 210          <select name="post_start_date" id="post-start-date">
 211              <option value="0"><?php _e( '&mdash; Select &mdash;' ); ?></option>
 212              <?php export_date_options(); ?>
 213          </select>
 214          <label for="post-end-date" class="label-responsive"><?php _e( 'End date:' ); ?></label>
 215          <select name="post_end_date" id="post-end-date">
 216              <option value="0"><?php _e( '&mdash; Select &mdash;' ); ?></option>
 217              <?php export_date_options(); ?>
 218          </select>
 219          </fieldset>
 220      </li>
 221      <li>
 222          <label for="post-status" class="label-responsive"><?php _e( 'Status:' ); ?></label>
 223          <select name="post_status" id="post-status">
 224              <option value="0"><?php _e( 'All' ); ?></option>
 225              <?php
 226              $post_stati = get_post_stati( array( 'internal' => false ), 'objects' );
 227              foreach ( $post_stati as $status ) :
 228                  ?>
 229              <option value="<?php echo esc_attr( $status->name ); ?>"><?php echo esc_html( $status->label ); ?></option>
 230              <?php endforeach; ?>
 231          </select>
 232      </li>
 233  </ul>
 234  
 235  <p><label><input type="radio" name="content" value="pages" /> <?php _e( 'Pages' ); ?></label></p>
 236  <ul id="page-filters" class="export-filters">
 237      <li>
 238          <label><span class="label-responsive"><?php _e( 'Authors:' ); ?></span>
 239          <?php
 240          $authors = $wpdb->get_col( "SELECT DISTINCT post_author FROM {$wpdb->posts} WHERE post_type = 'page'" );
 241          wp_dropdown_users(
 242              array(
 243                  'include'         => $authors,
 244                  'name'            => 'page_author',
 245                  'multi'           => true,
 246                  'show_option_all' => __( 'All' ),
 247                  'show'            => 'display_name_with_login',
 248              )
 249          );
 250          ?>
 251          </label>
 252      </li>
 253      <li>
 254          <fieldset>
 255          <legend class="screen-reader-text"><?php _e( 'Date range:' ); ?></legend>
 256          <label for="page-start-date" class="label-responsive"><?php _e( 'Start date:' ); ?></label>
 257          <select name="page_start_date" id="page-start-date">
 258              <option value="0"><?php _e( '&mdash; Select &mdash;' ); ?></option>
 259              <?php export_date_options( 'page' ); ?>
 260          </select>
 261          <label for="page-end-date" class="label-responsive"><?php _e( 'End date:' ); ?></label>
 262          <select name="page_end_date" id="page-end-date">
 263              <option value="0"><?php _e( '&mdash; Select &mdash;' ); ?></option>
 264              <?php export_date_options( 'page' ); ?>
 265          </select>
 266          </fieldset>
 267      </li>
 268      <li>
 269          <label for="page-status" class="label-responsive"><?php _e( 'Status:' ); ?></label>
 270          <select name="page_status" id="page-status">
 271              <option value="0"><?php _e( 'All' ); ?></option>
 272              <?php foreach ( $post_stati as $status ) : ?>
 273              <option value="<?php echo esc_attr( $status->name ); ?>"><?php echo esc_html( $status->label ); ?></option>
 274              <?php endforeach; ?>
 275          </select>
 276      </li>
 277  </ul>
 278  
 279  <?php
 280  foreach ( get_post_types(
 281      array(
 282          '_builtin'   => false,
 283          'can_export' => true,
 284      ),
 285      'objects'
 286  ) as $post_type ) :
 287      ?>
 288  <p><label><input type="radio" name="content" value="<?php echo esc_attr( $post_type->name ); ?>" /> <?php echo esc_html( $post_type->label ); ?></label></p>
 289  <?php endforeach; ?>
 290  
 291  <p><label><input type="radio" name="content" value="attachment" /> <?php _e( 'Media' ); ?></label></p>
 292  <ul id="attachment-filters" class="export-filters">
 293      <li>
 294          <fieldset>
 295          <legend class="screen-reader-text"><?php _e( 'Date range:' ); ?></legend>
 296          <label for="attachment-start-date" class="label-responsive"><?php _e( 'Start date:' ); ?></label>
 297          <select name="attachment_start_date" id="attachment-start-date">
 298              <option value="0"><?php _e( '&mdash; Select &mdash;' ); ?></option>
 299              <?php export_date_options( 'attachment' ); ?>
 300          </select>
 301          <label for="attachment-end-date" class="label-responsive"><?php _e( 'End date:' ); ?></label>
 302          <select name="attachment_end_date" id="attachment-end-date">
 303              <option value="0"><?php _e( '&mdash; Select &mdash;' ); ?></option>
 304              <?php export_date_options( 'attachment' ); ?>
 305          </select>
 306          </fieldset>
 307      </li>
 308  </ul>
 309  
 310  </fieldset>
 311  <?php
 312  /**
 313   * Fires at the end of the export filters form.
 314   *
 315   * @since 3.5.0
 316   */
 317  do_action( 'export_filters' );
 318  ?>
 319  
 320  <?php submit_button( __( 'Download Export File' ) ); ?>
 321  </form>
 322  </div>
 323  
 324  <?php include( ABSPATH . 'wp-admin/admin-footer.php' ); ?>


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