PHP照片上传的好例子代码在哪里？

似乎没有人将各种StackOverflow问题中的所有示例代码绑定到一个好的、放在一起的关于如何处理照片上传的示例中。这是我的开始。。。请帮助改进它

以下是我们的设置：

• 我们的文件上载控件名为

  $file

  ，例如

  ，下面是我对它的拍摄：
  
  // Given: $file, $targetFilename, $photosPath, $maxSize
  $filePath = NULL;
  if (array_key_exists($_FILES, $file)
      && $_FILES[$file]['size'] != 0
      && $_FILES[$file]['error'] == UPLOAD_ERR_OK)
  {
      if ($_FILES[$file]['size'] > $maxSize)
      {
          throw new Exception("The uploaded photo was too large; the maximum size is $maxSize bytes.");
      }
  
      $imageData = getimagesize($_FILES[$file]['tmp_name']);
      $extension = image_type_to_extension($imageData[2]);
      if ($extension != ".jpg" && $extension != ".jpeg")
      {
          throw new Exception("Only .jpg photos are allowed.");
      }
  
      $possibleFilePath = $photosPath . $targetFilename . ".jpg";
      if (!move_uploaded_file($_FILES[$file]['tmp_name'],
                              $_SERVER['DOCUMENT_ROOT'] . $possibleFilePath)
      {
          throw new Exception("Could not save the uploaded photo to the server.");
      }
  
      $filePath = $possibleFilePath;
  }