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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 |
|---|---|
| 561 | $content = wxr_cdata( apply_filters( 'the_content_export', $post->post_content ) ); |
| 562 | |
| 563 | /** |
| 564 | * Filters the post excerpt used for WXR exports. |
| 565 | * |
| 566 | * @since 2.6.0 |
| 567 | * |
| 568 | * @param string $post_excerpt Excerpt for the current post. |
| 569 | */ |
| 570 | $excerpt = wxr_cdata( apply_filters( 'the_excerpt_export', $post->post_excerpt ) ); |
| 571 | |
| 572 | $is_sticky = is_sticky( $post->ID ) ? 1 : 0; |
| 573 | ?> |
| 574 | <item> |
| 575 | <title><?php echo $title; ?></title> |
| 576 | <link><?php the_permalink_rss(); ?></link> |
| 577 | <pubDate><?php echo mysql2date( 'D, d M Y H:i:s +0000', get_post_time( 'Y-m-d H:i:s', true ), false ); ?></pubDate> |
| 578 | <dc:creator><?php echo wxr_cdata( get_the_author_meta( 'login' ) ); ?></dc:creator> |
| 579 | <guid isPermaLink="false"><?php the_guid(); ?></guid> |