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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 |
|---|---|
| 386 | $posts = $wpdb->get_results( "SELECT * FROM {$wpdb->posts} $where" ); |
| 387 | |
| 388 | // Begin Loop. |
| 389 | foreach ( $posts as $post ) { |
| 390 | setup_postdata( $post ); |
| 391 | $is_sticky = is_sticky( $post->ID ) ? 1 : 0; |
| 392 | ?> |
| 393 | <item> |
| 394 | <?php /** This filter is documented in wp-includes/feed.php */ ?> |
| 395 | <title><?php echo apply_filters( 'the_title_rss', $post->post_title ); ?></title> |
| 396 | <link><?php the_permalink_rss() ?></link> |
| 397 | <pubDate><?php echo mysql2date( 'D, d M Y H:i:s +0000', get_post_time( 'Y-m-d H:i:s', true ), false ); ?></pubDate> |
| 398 | <dc:creator><?php echo wxr_cdata( get_the_author_meta( 'login' ) ); ?></dc:creator> |
| 399 | <guid isPermaLink="false"><?php the_guid(); ?></guid> |
| 400 | <description></description> |
| 401 | <content:encoded><?php |
| 402 | /** |
| 403 | * Filter the post content used for WXR exports. |
| 404 | * |