$HTTP_RAW_POST_DATA — ԭ��POST����
This feature was DEPRECATED in PHP 5.6.0, and REMOVED as of PHP 7.0.0.
$HTTP_RAW_POST_DATA ���� POST �ύ��ԭʼ���ݡ��μ� always_populate_raw_post_data
һ����ԣ�ʹ�� php://input ���� $HTTP_RAW_POST_DATA��