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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 |
|---|---|
| 872 | if ( is_null( $parent ) ) { |
| 873 | break; |
| 874 | } |
| 875 | |
| 876 | $this->current_level++; |
| 877 | $find_main_page = (int) $parent->post_parent; |
| 878 | |
| 879 | if ( ! isset( $parent_name ) ) { |
| 880 | /** This filter is documented in wp-includes/post-template.php */ |
| 881 | $parent_name = apply_filters( 'the_title', $parent->post_title, $parent->ID ); |
| 882 | } |
| 883 | } |
| 884 | } |
| 885 | } |
| 886 | |
| 887 | $pad = str_repeat( '— ', $this->current_level ); |
| 888 | echo "<strong>"; |
| 889 | |
| 890 | $format = get_post_format( $post->ID ); |