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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 264 | while ( $next_posts = array_splice($post_ids, 0, 20) ) { |
| 265 | $where = "WHERE ID IN (".join(',', $next_posts).")"; |
| 266 | $posts = $wpdb->get_results("SELECT * FROM $wpdb->posts $where ORDER BY post_date_gmt ASC"); |
| 267 | foreach ($posts as $post) { |
| 268 | // Don't export revisions. They bloat the export. |
| 269 | if ( 'revision' == $post->post_type ) |
| 270 | continue; |
| 271 | setup_postdata($post); ?> |
| 272 | <item> |
| 273 | <title><?php echo apply_filters('the_title_rss', $post->post_title); ?></title> |
| 274 | <link><?php the_permalink_rss() ?></link> |
| 275 | <pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_post_time('Y-m-d H:i:s', true), false); ?></pubDate> |
| 276 | <dc:creator><?php echo wxr_cdata(get_the_author()); ?></dc:creator> |
| 277 | <?php wxr_post_taxonomy() ?> |
| 278 | |
| 279 | <guid isPermaLink="false"><?php the_guid(); ?></guid> |
| 280 | <description></description> |
| 281 | <content:encoded><?php echo wxr_cdata( apply_filters('the_content_export', $post->post_content) ); ?></content:encoded> |
| 282 | <excerpt:encoded><?php echo wxr_cdata( apply_filters('the_excerpt_export', $post->post_excerpt) ); ?></excerpt:encoded> |