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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 |
---|---|
6575 |
|
6576 | /** |
6577 | * Filters the attachment meta data. |
6578 | * |
6579 | * @since 2.1.0 |
6580 | * |
6581 | * @param array $data Array of meta data for the given attachment. |
6582 | * @param int $attachment_id Attachment post ID. |
6583 | */ |
6584 | return apply_filters( 'wp_get_attachment_metadata', $data, $attachment_id ); |
6585 | } |
6586 |
|
6587 | /** |
6588 | * Updates metadata for an attachment. |
6589 | * |
6590 | * @since 2.1.0 |
6591 | * |
6592 | * @param int $attachment_id Attachment post ID. |
6593 | * @param array $data Attachment meta data. |