<p>$target_dir = "uploads/";$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);$uploadOk = 1;$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));// Check if image file is a actual image or fake imageif(isset($_POST["submit"])) {  $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);  if($check !== false) {    echo "File is an image - " . $check["mime"] . ".";    $uploadOk = 1;  } else {    echo "File is not an image.";    $uploadOk = 0;  }}</p>