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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 |