What are best practices for configuring upload_tmp_dir in the php.ini file for PHP file uploads?

When uploading files using PHP, it is important to configure the `upload_tmp_dir` directive in the `php.ini` file to specify a directory where temporary files will be stored during the upload process. This helps prevent potential security risks and ensures that the server has enough space to handle large file uploads.

; Set upload_tmp_dir to a specific directory for storing temporary files during uploads
upload_tmp_dir = /path/to/temp/directory