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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 |
|---|---|
| 6473 | |
| 6474 | /** |
| 6475 | * Filters the attachment meta data. |
| 6476 | * |
| 6477 | * @since 2.1.0 |
| 6478 | * |
| 6479 | * @param array $data Array of meta data for the given attachment. |
| 6480 | * @param int $attachment_id Attachment post ID. |
| 6481 | */ |
| 6482 | return apply_filters( 'wp_get_attachment_metadata', $data, $attachment_id ); |
| 6483 | } |
| 6484 | |
| 6485 | /** |
| 6486 | * Updates metadata for an attachment. |
| 6487 | * |
| 6488 | * @since 2.1.0 |
| 6489 | * |
| 6490 | * @param int $attachment_id Attachment post ID. |
| 6491 | * @param array $data Attachment meta data. |