If asObject is set to false, $objectItem won't be an object.

static function &fetchListByClassID( $classID, $version = EZ_CLASS_VERSION_STATUS_DEFINED, $asObject = true )
{
$objects = null;
if ( $asObject )

{ $objects =& $GLOBALS['eZContentClassAttributeCacheList'][$classID][$version]; }

if ( !isset( $objects ) or
$objects === null )
{
$cond = array( 'contentclass_id' => $classID,
'version' => $version );
$objectList = eZPersistentObject::fetchObjectList( eZContentClassAttribute::definition(),
null, $cond, null, null,
$asObject );
foreach ( array_keys( $objectList ) as $objectKey )

{ $objectItem =& $objectList[$objectKey]; $objectID = $objectItem->ID; $objectVersion = $objectItem->Version; if ( !isset( $GLOBALS['eZContentClassAttributeCache'][$objectID][$objectVersion] ) ) $GLOBALS['eZContentClassAttributeCache'][$objectID][$objectVersion] =& $objectItem; }

$objects = $objectList;
}
return $objects;
}