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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 |
|---|---|
| 542 | |
| 543 | /** |
| 544 | * Filters whether to remove the 'Months' drop-down from the post list table. |
| 545 | * |
| 546 | * @since 4.2.0 |
| 547 | * |
| 548 | * @param bool $disable Whether to disable the drop-down. Default false. |
| 549 | * @param string $post_type The post type. |
| 550 | */ |
| 551 | if ( apply_filters( 'disable_months_dropdown', false, $post_type ) ) { |
| 552 | return; |
| 553 | } |
| 554 | |
| 555 | $extra_checks = "AND post_status != 'auto-draft'"; |
| 556 | if ( ! isset( $_GET['post_status'] ) || 'trash' !== $_GET['post_status'] ) { |
| 557 | $extra_checks .= " AND post_status != 'trash'"; |
| 558 | } elseif ( isset( $_GET['post_status'] ) ) { |
| 559 | $extra_checks = $wpdb->prepare( ' AND post_status = %s', $_GET['post_status'] ); |
| 560 | } |