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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 |
|---|---|
| 518 | |
| 519 | /** |
| 520 | * Filter whether to remove the 'Months' drop-down from the post list table. |
| 521 | * |
| 522 | * @since 4.2.0 |
| 523 | * |
| 524 | * @param bool $disable Whether to disable the drop-down. Default false. |
| 525 | * @param string $post_type The post type. |
| 526 | */ |
| 527 | if ( apply_filters( 'disable_months_dropdown', false, $post_type ) ) { |
| 528 | return; |
| 529 | } |
| 530 | |
| 531 | $months = $wpdb->get_results( $wpdb->prepare( " |
| 532 | SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month |
| 533 | FROM $wpdb->posts |
| 534 | WHERE post_type = %s |
| 535 | ORDER BY post_date DESC |
| 536 | ", $post_type ) ); |