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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 |
|---|---|
| 608 | |
| 609 | if ( is_null( $parent ) ) |
| 610 | break; |
| 611 | |
| 612 | $level++; |
| 613 | $find_main_page = (int) $parent->post_parent; |
| 614 | |
| 615 | if ( !isset( $parent_name ) ) { |
| 616 | /** This filter is documented in wp-includes/post-template.php */ |
| 617 | $parent_name = apply_filters( 'the_title', $parent->post_title, $parent->ID ); |
| 618 | } |
| 619 | } |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | $pad = str_repeat( '— ', $level ); |
| 624 | echo "<td $attributes><strong>"; |
| 625 | |
| 626 | if ( $format = get_post_format( $post->ID ) ) { |