PHP - Rotate Images

So whether I am uploading an image through my iphone or sending that image to my computer and uploading it from the computer, it has the same effect. If I upload that image, it'll orient the image in landscape mode.

Having said that, I found a function that can fix the orient issue. The problem is I don't know the proper way to integrate it into the image upload script. I have tried several different ways but they all give me errors. Can you show me where exactly I should use this function?

// IMAGE ORIENTATION 
function getOrientedImage($imagePath) {

	$image = imagecreatefromstring(file_get_contents($imagePath));
	$exif = exif_read_data($imagePath);

	if(!empty($exif['Orientation'])) {
		switch($exif['Orientation']) {

			case 8:
				$image = imagerotate($image,90,0);
				swapHW();
			break;

			case 3:
				$image = imagerotate($image,180,0);
			break;

			case 6:
				$image = imagerotate($image,-90,0);
				swapHW();
			break;
		}
	}
	return $image;
}

// IMAGE UPLOAD SCRIPT
if(isset($_FILES['fileToUpload']) AND !empty($_FILES['fileToUpload']["name"])) {
  if(is_uploaded_file($_FILES['fileToUpload']["tmp_name"])) {

    $target_dir	   = '../members/images/'.$global_user_id.'/projects/'.$url_project_id.'/';
    $target_file   = $target_dir . basename($_FILES["fileToUpload"]["name"]);
    $imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);

    $source_file   = $_FILES["fileToUpload"]["tmp_name"];
    $random_name   = generateRandomString(10);
    $new_image     = $random_name . '.' . $imageFileType;
    $resized_image = compressImage($source_file, $new_image, 50);
    $new_file_path = $target_dir . $resized_image;

    if(!is_dir($target_dir)){
      mkdir($target_dir, 0775, true);
    }

    $uploadOk      = 1;
    // Check if image file is a actual image or fake image
    $check = getimagesize($source_file);
    if($check !== false) {
     //   echo "File is an image - " . $check["mime"] . ".";
        $uploadOk = 1;
    } else {
        $errors[] = 'File is not an image!';
        $uploadOk = 0;
    }
    // Check if file already exists
    if (file_exists($target_file)) {
        $errors[] = 'Sorry, file already exists!';
        $uploadOk = 0;
    }
    // Check file size
    if ($_FILES["fileToUpload"]["size"] > 5000000) {
        $errors[] = 'Sorry, your file size is bigger than 5mb!';
        $uploadOk = 0;
    }
    // Allow certain file formats
    if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif" && $imageFileType != "JPG" && $imageFileType != "PNG" && $imageFileType != "JPEG" && $imageFileType != "GIF") {
        $errors[] = 'Sorry, only JPG, JPEG, PNG & GIF files are allowed!';
        $uploadOk = 0;
    }
    // Check if $uploadOk is set to 0 by an error
    if($uploadOk == 0) {
        $errors[] = 'Sorry, your file was not uploaded!';
    // if everything is ok, try to upload file
    } else {

      if(rename($new_image, $new_file_path)) {

        echo 'success';

      } else {
        $errors[] = 'Sorry, there was an error uploading your file!';
      }
    }
  } else {
    $errors[] = 'You must upload an image!';
  }
}

Hey guy's i have a script i did a few months ago and now noticed that it is doing its job but keeps the old file ..so i got the image a few times but on a different angle...

how can i optimize this code to delete the old image when doing the rotation?

<?php
session_start();
include_once 'dbconnect.php';
if (!isset($_SESSION['userSession'])) {
	header("Location: index.php");
}

$degrees = -270;
$path = $_GET['Folder'];
$file =$_GET['Pic'];
$fileid =$_GET['id'];

$image = $path.'/'.$file;
$imageN = $path.'/New_'.$file;
//load the image
$source = imagecreatefromjpeg($image);

//rotate the image
$rotate = imagerotate($source, $degrees, 0);

$NewImg='New_'.$file ;

//set the Content type
//header('Content-type: image/jpeg');

//display the rotated image on the browser
//imagejpeg($rotate);
imagejpeg($rotate,$imageN,100);
//free the memory
imagedestroy($source);
imagedestroy($rotate);
$sql = "UPDATE Coupon_list SET product_image_thumb = '$NewImg' WHERE id = '$fileid'";

if (mysqli_query($DBcon, $sql)) {
   echo "Rotation ok";
echo('<script language="Javascript">opener.window.location.reload(false); window.close();</script>');

} else {
   echo "Error Rotating: " . mysqli_error($DBcon);
}
mysqli_close($DBcon);
?>

<img src="gears.gif" alt="" />