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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 |
|---|---|
| 839 | |
| 840 | /** |
| 841 | * Filters the attached file based on the given ID. |
| 842 | * |
| 843 | * @since 2.1.0 |
| 844 | * |
| 845 | * @param string|false $file The file path to where the attached file should be, false otherwise. |
| 846 | * @param int $attachment_id Attachment ID. |
| 847 | */ |
| 848 | return apply_filters( 'get_attached_file', $file, $attachment_id ); |
| 849 | } |
| 850 | |
| 851 | /** |
| 852 | * Updates attachment file path based on attachment ID. |
| 853 | * |
| 854 | * Used to update the file path of the attachment, which uses post meta name |
| 855 | * '_wp_attached_file' to store the path of the attachment. |
| 856 | * |
| 857 | * @since 2.1.0 |