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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 |
|---|---|
| 749 | |
| 750 | /** |
| 751 | * Filters the 'Months' drop-down results. |
| 752 | * |
| 753 | * @since 3.7.0 |
| 754 | * |
| 755 | * @param object[] $months Array of the months drop-down query results. |
| 756 | * @param string $post_type The post type. |
| 757 | */ |
| 758 | $months = apply_filters( 'months_dropdown_results', $months, $post_type ); |
| 759 | |
| 760 | $month_count = count( $months ); |
| 761 | |
| 762 | if ( ! $month_count || ( 1 === $month_count && 0 === (int) $months[0]->month ) ) { |
| 763 | return; |
| 764 | } |
| 765 | |
| 766 | $m = isset( $_GET['m'] ) ? (int) $_GET['m'] : 0; |
| 767 | ?> |