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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 |
|---|---|
| 361 | $where = 'WHERE ID IN (' . join( ',', $next_posts ) . ')'; |
| 362 | $posts = $wpdb->get_results( "SELECT * FROM {$wpdb->posts} $where" ); |
| 363 | |
| 364 | // Begin Loop |
| 365 | foreach ( $posts as $post ) { |
| 366 | setup_postdata( $post ); |
| 367 | $is_sticky = is_sticky( $post->ID ) ? 1 : 0; |
| 368 | ?> |
| 369 | <item> |
| 370 | <title><?php echo apply_filters( 'the_title_rss', $post->post_title ); ?></title> |
| 371 | <link><?php the_permalink_rss() ?></link> |
| 372 | <pubDate><?php echo mysql2date( 'D, d M Y H:i:s +0000', get_post_time( 'Y-m-d H:i:s', true ), false ); ?></pubDate> |
| 373 | <dc:creator><?php echo get_the_author_meta( 'login' ); ?></dc:creator> |
| 374 | <guid isPermaLink="false"><?php the_guid(); ?></guid> |
| 375 | <description></description> |
| 376 | <content:encoded><?php echo wxr_cdata( apply_filters( 'the_content_export', $post->post_content ) ); ?></content:encoded> |
| 377 | <excerpt:encoded><?php echo wxr_cdata( apply_filters( 'the_excerpt_export', $post->post_excerpt ) ); ?></excerpt:encoded> |
| 378 | <wp:post_id><?php echo $post->ID; ?></wp:post_id> |
| 379 | <wp:post_date><?php echo $post->post_date; ?></wp:post_date> |