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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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577 |
|
578 | /** |
579 | * Filters the 'Months' drop-down results. |
580 | * |
581 | * @since 3.7.0 |
582 | * |
583 | * @param object $months The months drop-down query results. |
584 | * @param string $post_type The post type. |
585 | */ |
586 | $months = apply_filters( 'months_dropdown_results', $months, $post_type ); |
587 |
|
588 | $month_count = count( $months ); |
589 |
|
590 | if ( ! $month_count || ( 1 == $month_count && 0 == $months[0]->month ) ) { |
591 | return; |
592 | } |
593 |
|
594 | $m = isset( $_GET['m'] ) ? (int) $_GET['m'] : 0; |
595 | ?> |