файл становиться больше

foreach($_FILES as $file) { 
  if ($file['size'] < 2000000) { 
    $tmp_name = $file['tmp_name']; 
    $temp = getimagesize($file['tmp_name']); 
    $percent = 0.5; 
    list($width_orig, $height_orig) = $temp; 
    $width = $width_orig * $percent; 
    $height = $height_orig * $percent; 
    $canvas = imagecreatetruecolor($width, $height); 
    imageAlphaBlending($canvas, false); 
    imageSaveAlpha($canvas, true); 
    if ($image_name != "") { 
      $razr = array(); 
      $razr = explode(".", $image_name); 
      $file_extension = end($razr); 
      $file_extension = mb_strToLower($file_extension); 
    } 
 
    function create_newImage($extension, $url) { 
      if ($extension == "jpg") { 
        return imagecreatefromjpeg($url); 
      } 
      if ($extension == "png") { 
        return ImageCreateFromPNG($url); 
      } 
      if ($extension == "gif") { 
        return imagecreatefromgif($url); 
      } 
      return (false); 
    } 
    $new_image = create_newImage($file_extension, $tmp_name); // 
    if ($new_image !== false) { 
      imagecopyresampled($canvas, $new_image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig); 
      imagepng($canvas, $tmp_name, 0); 
      imagedestroy($canvas); 
    } 
 
    if (move_uploaded_file($file['tmp_name'], $upload.$image_name)) { 
      $files = realpath($upload.$image_name); 
      $answer = "фаил загружен"; 
    } else { 
      $error = true; 
    } 
  } else { 
    $answer = "фаил слишком большой"; 
  } 
}