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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 |
|---|---|
| 650 | else |
| 651 | $excerpt = apply_filters('the_excerpt', $post->post_excerpt); |
| 652 | $excerpt = str_replace(']]>', ']]>', $excerpt); |
| 653 | $excerpt = strip_tags($excerpt); |
| 654 | if ( function_exists('mb_strcut') ) // For international trackbacks |
| 655 | $excerpt = mb_strcut($excerpt, 0, 252, get_option('blog_charset')) . '...'; |
| 656 | else |
| 657 | $excerpt = substr($excerpt, 0, 252) . '...'; |
| 658 | |
| 659 | $post_title = apply_filters('the_title', $post->post_title); |
| 660 | $post_title = strip_tags($post_title); |
| 661 | |
| 662 | if ( $to_ping ) { |
| 663 | foreach ( (array) $to_ping as $tb_ping ) { |
| 664 | $tb_ping = trim($tb_ping); |
| 665 | if ( !in_array($tb_ping, $pinged) ) { |
| 666 | trackback($tb_ping, $post_title, $excerpt, $post_id); |
| 667 | $pinged[] = $tb_ping; |
| 668 | } else { |