How to work with Save or SaveAs COM function

[PeterF888]

I am having some issue of saving data into excel. Here is my source code:

$path_name = 'F:/temp.xls';
$strFileName = 'temp.xls';

$xlSheet1 = new COM("Excel.Sheet");
$xlApp = new COM("Excel.Application");

			echo "Application name: ".$xlSheet1->Application->value."<br/>" ;  
			echo "Loaded version: ".$xlSheet1->Application->version."<br/>";

			$xlBook = $xlApp->Workbooks->Add();
			echo "Workbook Opened <br/>";
			$xlSheet1->Application->Visible = 1; 

			//*** Create Sheet 1 ***//  
			$Sheet = $xlBook->Worksheets(1);
			echo "Select a sheet <br/>";
			$xlBook->Worksheets(1)->Activate;
			echo "Activate sheet <br/>";
			$Sheet->Name = $xlTabName;
			echo "Name sheet to ".$xlTabName."<br/>";

			echo "Insert column headers <br/>";
			//*** Header ***// 
			$cell = $Sheet->Cells(1,1)->Value = "ITEM";
			$cell = $Sheet->Cells(1,2)->Value = "PRICE2";
			$cell = $Sheet->Cells(1,3)->Value = "AQTY";
			$cell = $Sheet->Cells(1,4)->Value = "QTYORD";


			echo "Insert data into columns <br/>";
			$intRows = 2;  
			while($objResult = mysqli_fetch_row($objQuery))  
			{  
				$cell = $Sheet->Cells($intRows,1)->Value = $objResult[0];
				$cell = $Sheet->Cells($intRows,2)->Value = $objResult[1];
				$cell = $Sheet->Cells($intRows,3)->Value = $objResult[2];
				$cell = $Sheet->Cells($intRows,4)->Value = $objResult[3];

				 //*** Detail ***//  
				//$xlApp->$Sheet->Cells($intRows,1)->Value = $objResult[0]; 
				//$xlApp->$Sheet->Cells($intRows,2)->Value = $objResult[1];  
				//$xlApp->$Sheet->Cells($intRows,3)->Value = $objResult[2];  
				//$xlApp->ActiveSheet->Cells($intRows,4)->Value = $objResult["disc"];  
				//$xlApp->ActiveSheet->Cells($intRows,5)->Value = $objResult["discls"];  
				//$xlApp->$Sheet->Cells($intRows,4)->Value = $objResult[3];  
				$intRows++;  
			}  				

			if(file_exists($path_name)) 
			{
				unlink($file_name);
				echo "Remove existing File";
			}

			$xlBook->Save($path_name); //*** Save to Path ***// 				 
			echo "File is saved <br/>";

			//*** Close & Quit ***//  
			$xlApp->Quit();
			$xlSheet1->Quit();
			unset($xlApp);
			unset($xlSheet);