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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 |
|---|---|
| 2740 | } else { |
| 2741 | /** This filter is documented in wp-includes/post-template.php */ |
| 2742 | $excerpt = apply_filters( 'the_excerpt', $post->post_excerpt ); |
| 2743 | } |
| 2744 | |
| 2745 | $excerpt = str_replace( ']]>', ']]>', $excerpt ); |
| 2746 | $excerpt = wp_html_excerpt( $excerpt, 252, '…' ); |
| 2747 | |
| 2748 | /** This filter is documented in wp-includes/post-template.php */ |
| 2749 | $post_title = apply_filters( 'the_title', $post->post_title, $post->ID ); |
| 2750 | $post_title = strip_tags( $post_title ); |
| 2751 | |
| 2752 | if ( $to_ping ) { |
| 2753 | foreach ( (array) $to_ping as $tb_ping ) { |
| 2754 | $tb_ping = trim( $tb_ping ); |
| 2755 | if ( ! in_array( $tb_ping, $pinged ) ) { |
| 2756 | trackback( $tb_ping, $post_title, $excerpt, $post->ID ); |
| 2757 | $pinged[] = $tb_ping; |
| 2758 | } else { |