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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 |
|---|---|
| 2102 | } else { |
| 2103 | /** This filter is documented in wp-admin/post-template.php */ |
| 2104 | $excerpt = apply_filters( 'the_excerpt', $post->post_excerpt ); |
| 2105 | } |
| 2106 | |
| 2107 | $excerpt = str_replace(']]>', ']]>', $excerpt); |
| 2108 | $excerpt = wp_html_excerpt($excerpt, 252, '…'); |
| 2109 | |
| 2110 | /** This filter is documented in wp-includes/post-template.php */ |
| 2111 | $post_title = apply_filters( 'the_title', $post->post_title, $post->ID ); |
| 2112 | $post_title = strip_tags($post_title); |
| 2113 | |
| 2114 | if ( $to_ping ) { |
| 2115 | foreach ( (array) $to_ping as $tb_ping ) { |
| 2116 | $tb_ping = trim($tb_ping); |
| 2117 | if ( !in_array($tb_ping, $pinged) ) { |
| 2118 | trackback($tb_ping, $post_title, $excerpt, $post_id); |
| 2119 | $pinged[] = $tb_ping; |
| 2120 | } else { |