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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 |
|---|---|
| 537 | |
| 538 | /** |
| 539 | * Filter the 'Months' drop-down results. |
| 540 | * |
| 541 | * @since 3.7.0 |
| 542 | * |
| 543 | * @param object $months The months drop-down query results. |
| 544 | * @param string $post_type The post type. |
| 545 | */ |
| 546 | $months = apply_filters( 'months_dropdown_results', $months, $post_type ); |
| 547 | |
| 548 | $month_count = count( $months ); |
| 549 | |
| 550 | if ( !$month_count || ( 1 == $month_count && 0 == $months[0]->month ) ) |
| 551 | return; |
| 552 | |
| 553 | $m = isset( $_GET['m'] ) ? (int) $_GET['m'] : 0; |
| 554 | ?> |
| 555 | <label for="filter-by-date" class="screen-reader-text"><?php _e( 'Filter by date' ); ?></label> |