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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 |
|---|---|
| 3005 | $wpdb->update( $wpdb->posts, array( 'to_ping' => '' ), array( 'ID' => $post->ID ) ); |
| 3006 | return; |
| 3007 | } |
| 3008 | |
| 3009 | if ( empty( $post->post_excerpt ) ) { |
| 3010 | /** This filter is documented in wp-includes/post-template.php */ |
| 3011 | $excerpt = apply_filters( 'the_content', $post->post_content, $post->ID ); |
| 3012 | } else { |
| 3013 | /** This filter is documented in wp-includes/post-template.php */ |
| 3014 | $excerpt = apply_filters( 'the_excerpt', $post->post_excerpt ); |
| 3015 | } |
| 3016 | |
| 3017 | $excerpt = str_replace( ']]>', ']]>', $excerpt ); |
| 3018 | $excerpt = wp_html_excerpt( $excerpt, 252, '…' ); |
| 3019 | |
| 3020 | /** This filter is documented in wp-includes/post-template.php */ |
| 3021 | $post_title = apply_filters( 'the_title', $post->post_title, $post->ID ); |
| 3022 | $post_title = strip_tags( $post_title ); |
| 3023 | |