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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 |
|---|---|
| 860 | |
| 861 | /** |
| 862 | * Filters the attached file based on the given ID. |
| 863 | * |
| 864 | * @since 2.1.0 |
| 865 | * |
| 866 | * @param string|false $file The file path to where the attached file should be, false otherwise. |
| 867 | * @param int $attachment_id Attachment ID. |
| 868 | */ |
| 869 | return apply_filters( 'get_attached_file', $file, $attachment_id ); |
| 870 | } |
| 871 | |
| 872 | /** |
| 873 | * Updates attachment file path based on attachment ID. |
| 874 | * |
| 875 | * Used to update the file path of the attachment, which uses post meta name |
| 876 | * `_wp_attached_file` to store the path of the attachment. |
| 877 | * |
| 878 | * @since 2.1.0 |