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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 |
|---|---|
| 534 | $parent = get_post( $find_main_page ); |
| 535 | |
| 536 | if ( is_null( $parent ) ) |
| 537 | break; |
| 538 | |
| 539 | $level++; |
| 540 | $find_main_page = (int) $parent->post_parent; |
| 541 | |
| 542 | if ( !isset( $parent_name ) ) |
| 543 | $parent_name = apply_filters( 'the_title', $parent->post_title, $parent->ID ); |
| 544 | } |
| 545 | } |
| 546 | } |
| 547 | |
| 548 | $pad = str_repeat( '— ', $level ); |
| 549 | echo "<td $attributes><strong>"; |
| 550 | |
| 551 | if ( $format = get_post_format( $post->ID ) ) { |
| 552 | $label = get_post_format_string( $format ); |