Why is my PHP echo returning entire PHP file after WWW request?

I'm having a problem accessing my SQL database after transferring it to a new server.

Previously, the scripts were working very well, but I had to migrate it to a new server (I have set up PHP on the new server, and the phpinfo(); function appears to be working successfully).

I'm calling the PHP page with the WWW class in the same manner as before, and instead of returning an echo value that I am using to determine if the login details were correct or not, it's returning the entire contents of the PHP script, starting from .

Some Google-fu has turned up this:

http://answers.unity3d.com/questions/221881/wwwtext-is-returning-entire-indexphp-page.html

This was caused by the PHP page having HTML on it. My PHP page does not have any HTML on it (as far as I can tell) and the same problem is still occurring.

Does anyone have any advice at all? I simply do not know where to look now.

Thanks in advance. :)

 <?
 // CONNECTIONS =========================================================
 
 $host = "localhost"; //put your host here
 
 $user = "----"; //in general is root
 
 $password = "----"; //use your password here
 
 $dbname = "----"; //your database
 
 mysql_connect($host, $user, $password) or die("Cant connect into database");
 
 mysql_select_db($dbname)or die("Cant connect into database");
 
 // =============================================================================
 
 $unityHash = anti_injection_login($_POST["myform_hash"]);
 
 $phpHash = "hashcode"; // same code in here as in your Unity game
 
 $useremail = $_POST["myform_nick"];
 
 $userpassword = $_POST["myform_pass"];
 
 if(!$nick || !$pass) 
 {
    echo "Not enough data";
 } 
 else 
 {
     $SQL = "SELECT * FROM database WHERE ouremail = '" . $useremail . "'";
 
     $result_id = @mysql_query($SQL) or die("DATABASE ERROR!");
 
     $total = mysql_num_rows($result_id);
 
     if($total) 
     {
         $datas = @mysql_fetch_array($result_id);
 
         if(!strcmp($userpassword, $datas["userpasswordfield"])) 
         {
             echo "login okay";
         } 
         else 
         {
             echo "Incorrect details";
         }
     } 
     else 
     {
         echo "Incorrect details";
     }
 }
 
 // Close mySQL Connection
 
 mysql_close();
 
 ?>