[iOS] ถามเรื่อง upload การอัพโหลด file รูปภาพจาก แอพฯ ลงยังเซิฟเวอร์ครับ

NSData *imageData = UIImageJPEGRepresentation(self.imageView.image , 90);
	NSString *urlString = @"http://www.letsgogoapp.com/apiletsgogo/apiuppic_locat.php";
	
	NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
	[request setURL:[NSURL URLWithString:urlString]];
	[request setHTTPMethod:@"POST"];
	
	NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
	NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
	[request addValue:contentType forHTTPHeaderField:@"Content-Type"];
	
	NSMutableData *body = [NSMutableData data];
	[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
	[body appendData:[@"Content-Disposition: form-data; name=\"userfile\"; filename=\".jpg\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
	[body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
	[body appendData:[NSData dataWithData:imageData]];
	[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
	[request setHTTPBody:body];
	
    NSError *error = nil;
	NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&error];
    
    if(error)
    {
        NSLog(@"%@",[NSString stringWithFormat:@"%@",error.localizedDescription]);
        return;
    }
    
	NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
	
	NSLog(@"%@",returnString);

<?
ob_start();
session_start();
include("apiconnection.php");
$sstripID = $_SESSION["trip_ID"];
$sslocatID = $_SESSION["locat_ID"];
$ssimageID = $_SESSION["image_ID"];

$picnew_id =mysql_result(mysql_query("Select Max(imageID)+1 as MaxID from  ImageDetail"),0,"MaxID");//เลือกเอาค่า id ที่มากที่สุดในฐานข้อมูล
			

$uploaddir = './trip/';      //Uploading to same directory as PHP file
$file = basename($_FILES['userfile']['name']);
$uploadFile = $file;
//$randomNumber = rand(0, 999999); 
$randomNumber = "locat0".$sslocatID."p".$picnew_id;
$newName = $uploadDir . $randomNumber . $uploadFile;


if (is_uploaded_file($_FILES['userfile']['tmp_name'])) {
	echo "Temp file uploaded. \r\n";
} else {
	echo "Temp file not uploaded. \r\n";
}

if ($_FILES['userfile']['size']> 3000000) {
	exit("Your file is too large."); 
}

//$imageDetail = $_POST["imageDetail"];
$imageDateTime = date("Y-m-d H:i:s");
$imageurl = "http://www.letsgogoapp.com/apiletsgogo/trip/".$newName;
$_SESSION["image_ID"] = $picnew_id;

$strSQL = "INSERT INTO ImageDetail (imageID,tripID,locatID,imageDateTime,imagePath,imageUrlPic)

VALUES ('".$picnew_id."','".$sstripID."','".$sslocatID."','".$imageDateTime."','".$newName."','".$imageurl."')";
echo "insert OK!";
$objQuery = mysql_query($strSQL);
$arr = null;

if(!$objQuery)
{

$arr["Status"] = "0";
$arr["Message"] = "Insert Data Failed";
}
else
{
$arr["Status"] = "1";
$arr["Message"] = "Insert Data Successfully";
}

echo json_encode($arr);


if (move_uploaded_file($_FILES['userfile']['tmp_name'],"./trip/".$newName)) {
	
    $postsize = ini_get('post_max_size');   //Not necessary, I was using these
    $canupload = ini_get('file_uploads');    //server variables to see what was 
    $tempdir = ini_get('upload_tmp_dir');   //going wrong.
    $maxsize = ini_get('upload_max_filesize');
	echo "move sucess!!";
}

?>