Custom_Image_Header::create_attachment_object( string $cropped, int $parent_attachment_id )

	final public function create_attachment_object( $cropped, $parent_attachment_id ) {
		$parent = get_post( $parent_attachment_id );
		$parent_url = wp_get_attachment_url( $parent->ID );
		$url = str_replace( basename( $parent_url ), basename( $cropped ), $parent_url );

		$size = @getimagesize( $cropped );
		$image_type = ( $size ) ? $size['mime'] : 'image/jpeg';

		$object = array(
			'ID' => $parent_attachment_id,
			'post_title' => basename($cropped),
			'post_mime_type' => $image_type,
			'guid' => $url,
			'context' => 'custom-header',
			'post_parent' => $parent_attachment_id,
		);

		return $object;
	}