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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 |
---|---|
1748 | $pinged = get_pung($post_id); |
1749 | if ( empty($to_ping) ) { |
1750 | $wpdb->update($wpdb->posts, array('to_ping' => ''), array('ID' => $post_id) ); |
1751 | return; |
1752 | } |
1753 |
|
1754 | if ( empty($post->post_excerpt) ) |
1755 | $excerpt = apply_filters('the_content', $post->post_content); |
1756 | else |
1757 | $excerpt = apply_filters('the_excerpt', $post->post_excerpt); |
1758 | $excerpt = str_replace(']]>', ']]>', $excerpt); |
1759 | $excerpt = wp_html_excerpt($excerpt, 252) . '...'; |
1760 |
|
1761 | $post_title = apply_filters('the_title', $post->post_title, $post->ID); |
1762 | $post_title = strip_tags($post_title); |
1763 |
|
1764 | if ( $to_ping ) { |
1765 | foreach ( (array) $to_ping as $tb_ping ) { |
1766 | $tb_ping = trim($tb_ping); |