February 12, 2011 
Definition:
function wp_update_attachment_metadata( $post_id, $data ) {}
Update metadata for an attachment.
Parameters
- int $post_id: Attachment ID.
- array $data: Attachment data.
Defined filters
- wp_update_attachment_metadata
apply_filters( 'wp_update_attachment_metadata', $data, $post->ID )
Source code
function wp_update_attachment_metadata( $post_id, $data ) {
$post_id = (int) $post_id;
if ( !$post =& get_post( $post_id ) )
return false;
$data = apply_filters( 'wp_update_attachment_metadata', $data, $post->ID );
return update_post_meta( $post->ID, '_wp_attachment_metadata', $data);
}
4211
A HitchHackers guide through WordPress 
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