您需要两件事：

引用

application / x-www-form-urlencodedPOST数据

a referrer
an "application/x-www-form-urlencoded" POST data

$params = 'lccp_trnname='.urlencode('14553').'&getIt='.urlencode('Get Schedule');
curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
curl_setopt($ch,CURLOPT_REFERER, "http://www.indianrail.gov.in/train_Schedule.html");