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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 |
|---|---|
| 2742 | * Modify returned attachment counts by mime type. |
| 2743 | * |
| 2744 | * @since 3.7.0 |
| 2745 | * |
| 2746 | * @param object $counts An object containing the attachment counts by |
| 2747 | * mime type. |
| 2748 | * @param string $mime_type The mime type pattern used to filter the attachments |
| 2749 | * counted. |
| 2750 | */ |
| 2751 | return apply_filters( 'wp_count_attachments', (object) $counts, $mime_type ); |
| 2752 | } |
| 2753 | |
| 2754 | /** |
| 2755 | * Get default post mime types. |
| 2756 | * |
| 2757 | * @since 2.9.0 |
| 2758 | * @since 5.3.0 Added the 'Documents', 'Spreadsheets', and 'Archives' mime type groups. |
| 2759 | * |
| 2760 | * @return array List of post mime types. |