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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 |
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633 |
|
634 | /** |
635 | * Filters the 'Months' drop-down results. |
636 | * |
637 | * @since 3.7.0 |
638 | * |
639 | * @param object[] $months Array of the months drop-down query results. |
640 | * @param string $post_type The post type. |
641 | */ |
642 | $months = apply_filters( 'months_dropdown_results', $months, $post_type ); |
643 |
|
644 | $month_count = count( $months ); |
645 |
|
646 | if ( ! $month_count || ( 1 == $month_count && 0 == $months[0]->month ) ) { |
647 | return; |
648 | } |
649 |
|
650 | $m = isset( $_GET['m'] ) ? (int) $_GET['m'] : 0; |
651 | ?> |