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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 |
|---|---|
| 2598 | * Filters the date a post was last modified for display. |
| 2599 | * |
| 2600 | * @since 2.1.0 |
| 2601 | * |
| 2602 | * @param string|false $the_modified_date The last modified date or false if no post is found. |
| 2603 | * @param string $format PHP date format. |
| 2604 | * @param string $before HTML output before the date. |
| 2605 | * @param string $after HTML output after the date. |
| 2606 | */ |
| 2607 | $the_modified_date = apply_filters( 'the_modified_date', $the_modified_date, $format, $before, $after ); |
| 2608 | |
| 2609 | if ( $echo ) { |
| 2610 | echo $the_modified_date; |
| 2611 | } else { |
| 2612 | return $the_modified_date; |
| 2613 | } |
| 2614 | |
| 2615 | } |
| 2616 | |