How to prevent curl or file_get_contents for access my page out side server

Question

I am facing one problem about 2 hour. Can anyone give the solution I will appreciate.

http://mydowmin.com/userdatapage.php Note: i do not want to access this page out side world using Curl function

how to avoid it this script

$ch=curl_init("http://mydowmin.com/userdatapage.php"); 
curl_setopt ($ch,CURLOPT_CERTINFO,1);
curl_setopt ($ch,CURLOPT_VERBOSE,1);
curl_exec($ch) or die;
print_r( curl_getinfo($ch) );

http://mydomain.com/datapage.php

I want to block the page for curl and file_get_content for access out side. If you access this url direct on browser it should be execute but should not in Curl and Fgc function.

Answer 1

Browser can be simulated easily. this is not possible
php curl: how can i emulate a get request exactly like a web browser?