uploading csv file

i m uploading csv file one row is uploading but more than one row is cannot uploaded

public function actionUploadcsv()

	{	

		$model=new Studentmarks;

		$filelist=CUploadedFile::getInstancesByName('name');

           

			  foreach($filelist as $file)

	               {

	                   try{

					   

	                   $transaction = Yii::app()->db->beginTransaction();

					   ini_set("auto_detect_line_endings", true);

					   //if(($handle = fopen("$file->tempName", "r")) !== FALSE){

	                   $handle = fopen("$file->tempName", "r");

	                   $row = 1;

					   $temp = 0;

					   $notupdate = 0;

					   $newmodel=new Studentmarks;

						while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {

	                      if($data[0] != ""){

						   if($row>1){

								date_default_timezone_set("Asia/Kolkata"); 

								$timestamp = date('Y-m-d H:i:s');

								$SchoolId=Yii::app()->session['Schoolid'];

	                            $temp = 0;

								$examtype = $data[0];

								$classname = $data[1];

								$subjectname =$data[2];

								$coursename = $data[3];

								$username = $data[4];

								$modelp = Puserprofile::model()->findByAttributes(array('studentname'=>$username, 'Status'=>1,'puser_for'=>1, 'School_Id'=>$SchoolId));

								$modele = Examtype::model()->findByAttributes(array('ExamName'=>$examtype, 'Status'=>1, 'School_Id'=>$SchoolId));

								$modelc = Classdetails::model()->findByAttributes(array('classname'=>$classname, 'Status'=>1, 'School_Id'=>$SchoolId));

								$models = Subject::model()->findByAttributes(array('SubjectName'=>$subjectname, 'Status'=>1, 'School_Id'=>$SchoolId));

								if(!is_null($modelp) && !is_null($modele) && !is_null($modelc) && !is_null($models)){									

									if($coursename!="0"){

										$modelsc = Subjectcourse::model()->findByAttributes(array('CourseName'=>$coursename, 'Status'=>1, 'School_Id'=>$SchoolId, 'SubjectId'=>$models->Subjectid));

											if(!is_null($modelsc)){

													$newmodel->pid = $modelp->pid;

													$newmodel->ExamId = $modele->ExamId;

													$newmodel->ClassId = $modelc->classid;

													$newmodel->Subjectid = $models->Subjectid;

													$newmodel->CourseId = $modelsc->CourseId;

													$newmodel->Mark = $data[5];

													$newmodel->Timestamp=$timestamp;

													$newmodel->School_Id=$SchoolId;

													$newmodel->Status=1;

													if($newmodel->save()){

														$count=$temp + 1;

														$temp = $count;

													}else{

														$total = $notupdate + 1;

														$notupdate = $total;

													}

													

											}

										}else{

													$newmodel->pid = $modelp->pid;

													$newmodel->ExamId = $modele->ExamId;

													$newmodel->ClassId = $modelc->classid;

													$newmodel->Subjectid = $models->Subjectid;													

													$newmodel->Mark = $data[5];

													$newmodel->Timestamp=$timestamp;

													$newmodel->School_Id=$SchoolId;

													$newmodel->Status=1;

													if($newmodel->save()){

														$count=$temp + 1;

														$temp = $count;

													}else{

														$total = $notupdate + 1;

														$notupdate = $total;

													}


									}									

									

								}

	                       }

	                       $row++; 

						  // $transaction->commit();

					}						   

					else{

							Yii::app()->user->setFlash('success', "CSV file should not be empty");

							$this->refresh();

						

					}

	                }

					   if($newmodel->save())

					   {

						$transaction->commit();

						Yii::app()->user->setFlash('success', $temp." Rows Success ".$notupdate." Unsuccess");

						$this->refresh();

						}else{

							Yii::app()->user->setFlash('success', "CSV file upload not completed");

						}

	                   }catch(Exception $error){

	                      print_r($error);


						   //print_r($classdet);

	                       $transaction->rollback();

	                   }                   

	               }

		$this->render('uploadcsv',array(

			'model'=>$model,

		));

		

	}