public static function isChildOlsubjects($SubjectId, $ChildSubjectId) { $ischild = false; $obj_retResult = DAL_manageOlsubjects::getOlsubjectsListBySubjectId($ChildSubjectId); //get child node if ($obj_retResult->type == 1) { $arr_OlsubjectsList = $obj_retResult->data; $obj_Olsubjects = $arr_OlsubjectsList[0]; $arrParentIds = explode(",", $obj_Olsubjects->Url); foreach ($arrParentIds as $OlsubjectsParentId) { if ($OlsubjectsParentId == $SubjectId) { $ischild = true; } } } return $ischild; }