upload.php

<?php
include 'profilePage.php';
$id = $_SESSION['id'];

$target_dir = "Images/";
//$fileNameNew = "profile".$id.".".$fileActualExt;
$newFileName = $target_dir .'Profile'.$id.'.'. pathinfo($_FILES["fileToUpload"]["name"] ,PATHINFO_EXTENSION);
$uploadOk = 1;
//$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
$imageFileType = pathinfo($_FILES["fileToUpload"]["name"] ,PATHINFO_EXTENSION);

//echo $fileNameNew;
//exit;

// Check if image file is a actual image or fake image
if(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;
  }
}

// Check if file already exists
//if (file_exists($target_file)) {
 // echo "Sorry, file already exists.";
  //$uploadOk = 0;
//}

// Check file size
if ($_FILES["fileToUpload"]["size"] > 5000000) {
  echo "Your file is too large.";
  $uploadOk = 0;
}

// Allow certain file formats
if($imageFileType != "png" ) {
  echo "Sorry, only PNG files are allowed.";
  $uploadOk = 0;
}

// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
  echo "Your file was not uploaded.";
// if everything is ok, try to upload file
} else {
  if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $newFileName)) {
    echo "Profile picture updated.";
    include 'connection.php';
    $query = "UPDATE dogusers SET Img ='1' WHERE userID = $_SESSION[id]";
    mysqli_query($connection, $query);
    //echo $query;
    //exit;
  } else {
    echo "Sorry, there was an error uploading your file.";
  }
}
?>