I'm having a problem trying to keep a session when i send a AJAX called to a file in a sub directory. I figured it was a problem with session create intance in the cookie based on the sub directory so i did the Set Cookie Param.

PHP Code:
CreateAccount.php
ini_set
('session.cookie_domain'substr($_SERVER['SERVER_NAME'],strpos($_SERVER['SERVER_NAME'],"."),100));
session_set_cookie_params(0'/''.domain.com');
session_start(); 
Code:
						$.ajax({
						  url: "/user_signup.php",
						  type: "post",
						  data: values,
						  success: function(){
							  window.location.reload(true);   // Reloads the window to force the session to show in current page. 
						  },
						  error:function(){
							  alert("failure");
						  }   
						});
It works perfect went i put the CreateAccount in the root directory.. however just for my sanity (OCD Issues) i prefer the CreateAccount to go into /ajax/CreateAccount.php lol