Spara filerna på annan hårddisk?

<?php ini_set("memory_limit", "200000000"); // for large images so that we do not get "Allowed memory exhausted"?>
<?php
// upload the file
if ((isset($_POST["submitted_form"])) && ($_POST["submitted_form"] == "image_upload_form")) {
	
	// file needs to be jpg,gif,bmp,x-png and 4 MB max
	if (($_FILES["image_upload_box"]["type"] == "image/jpeg" || $_FILES["image_upload_box"]["type"] == "image/pjpeg" || $_FILES["image_upload_box"]["type"] == "image/gif" || $_FILES["image_upload_box"]["type"] == "image/png") && ($_FILES["image_upload_box"]["size"] < 4000000))
	{
		
  
		// some settings
		$max_upload_width = 2592;
		$max_upload_height = 1944;
		  
		// if user chosed properly then scale down the image according to user preferances
		if(isset($_REQUEST['max_width_box']) and $_REQUEST['max_width_box']!='' and $_REQUEST['max_width_box']<=$max_upload_width){
			$max_upload_width = $_REQUEST['max_width_box'];
		}    
		if(isset($_REQUEST['max_height_box']) and $_REQUEST['max_height_box']!='' and $_REQUEST['max_height_box']<=$max_upload_height){
			$max_upload_height = $_REQUEST['max_height_box'];
		}	

		
		// if uploaded image was JPG/JPEG
		if($_FILES["image_upload_box"]["type"] == "image/jpeg" || $_FILES["image_upload_box"]["type"] == "image/pjpeg"){	
			$image_source = imagecreatefromjpeg($_FILES["image_upload_box"]["tmp_name"]);
		}		
		// if uploaded image was GIF
		if($_FILES["image_upload_box"]["type"] == "image/gif"){	
			$image_source = imagecreatefromgif($_FILES["image_upload_box"]["tmp_name"]);
		}	
		// BMP doesn't seem to be supported so remove it form above image type test (reject bmps)	
		// if uploaded image was BMP
		if($_FILES["image_upload_box"]["type"] == "image/bmp"){	
			$image_source = imagecreatefromwbmp($_FILES["image_upload_box"]["tmp_name"]);
		}			
		// if uploaded image was PNG
		if($_FILES["image_upload_box"]["type"] == "image/png"){
			$image_source = imagecreatefrompng($_FILES["image_upload_box"]["tmp_name"]);
		}
		

		$remote_file = "Image_files/".$_FILES["image_upload_box"]["name"];
		imagejpeg($image_source,$remote_file,100);
		chmod($remote_file,0644);