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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 |
|---|---|
| 2565 | * Filters the date a post was last modified for display. |
| 2566 | * |
| 2567 | * @since 2.1.0 |
| 2568 | * |
| 2569 | * @param string|false $the_modified_date The last modified date or false if no post is found. |
| 2570 | * @param string $format PHP date format. |
| 2571 | * @param string $before HTML output before the date. |
| 2572 | * @param string $after HTML output after the date. |
| 2573 | */ |
| 2574 | $the_modified_date = apply_filters( 'the_modified_date', $the_modified_date, $format, $before, $after ); |
| 2575 | |
| 2576 | if ( $echo ) { |
| 2577 | echo $the_modified_date; |
| 2578 | } else { |
| 2579 | return $the_modified_date; |
| 2580 | } |
| 2581 | |
| 2582 | } |
| 2583 | |