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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 |
---|---|
744 | 'metadata' => wp_get_attachment_metadata( $media_item->ID ), |
745 | ); |
746 |
|
747 | $thumbnail_src = image_downsize( $media_item->ID, $thumbnail_size ); |
748 | if ( $thumbnail_src ) |
749 | $_media_item['thumbnail'] = $thumbnail_src[0]; |
750 | else |
751 | $_media_item['thumbnail'] = $_media_item['link']; |
752 |
|
753 | return apply_filters( 'xmlrpc_prepare_media_item', $_media_item, $media_item, $thumbnail_size ); |
754 | } |
755 |
|
756 | /** |
757 | * Prepares page data for return in an XML-RPC object. |
758 | * |
759 | * @access protected |
760 | * |
761 | * @param object $page The unprepared page data |
762 | * @return array The prepared page data |