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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 |
|---|---|
| 475 | /** |
| 476 | * Filters whether to remove the 'Formats' drop-down from the post list table. |
| 477 | * |
| 478 | * @since 5.2.0 |
| 479 | * @since 5.5.0 The `$post_type` parameter was added. |
| 480 | * |
| 481 | * @param bool $disable Whether to disable the drop-down. Default false. |
| 482 | * @param string $post_type Post type slug. |
| 483 | */ |
| 484 | if ( apply_filters( 'disable_formats_dropdown', false, $post_type ) ) { |
| 485 | return; |
| 486 | } |
| 487 | |
| 488 | // Return if the post type doesn't have post formats or if we're in the Trash. |
| 489 | if ( ! is_object_in_taxonomy( $post_type, 'post_format' ) || $this->is_trash ) { |
| 490 | return; |
| 491 | } |
| 492 | |
| 493 | // Make sure the dropdown shows only formats with a post count greater than 0. |