получение парент ID

<?php
	global $modx;

	$sql = "SELECT `parent` FROM ".$modx->getFullTableName("site_content")." WHERE `ID`='".$modx->documentIdentifier."'";

	$rezult = $modx->dbQuery($sql);
	
	while( $row = $modx->db->getRow( $rezult ) ) {
		print $row['parent'];
	}
?>

<?php
	global $modx;	
	$parent = $modx->getParent($modx->documentIdentifier,1,'id');
	print $parent;
?>

[!test!]