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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 |
|---|---|
| 2121 | } else { |
| 2122 | /** This filter is documented in wp-admin/post-template.php */ |
| 2123 | $excerpt = apply_filters( 'the_excerpt', $post->post_excerpt ); |
| 2124 | } |
| 2125 | |
| 2126 | $excerpt = str_replace(']]>', ']]>', $excerpt); |
| 2127 | $excerpt = wp_html_excerpt($excerpt, 252, '…'); |
| 2128 | |
| 2129 | /** This filter is documented in wp-includes/post-template.php */ |
| 2130 | $post_title = apply_filters( 'the_title', $post->post_title, $post->ID ); |
| 2131 | $post_title = strip_tags($post_title); |
| 2132 | |
| 2133 | if ( $to_ping ) { |
| 2134 | foreach ( (array) $to_ping as $tb_ping ) { |
| 2135 | $tb_ping = trim($tb_ping); |
| 2136 | if ( !in_array($tb_ping, $pinged) ) { |
| 2137 | trackback($tb_ping, $post_title, $excerpt, $post_id); |
| 2138 | $pinged[] = $tb_ping; |
| 2139 | } else { |