function login($user, $md5_password, $first_time = false, $password = "")
	{
		global $dbconn, $main;

		$user = $dbconn -> escape($user);
		$username = $dbconn -> escape($user);

		// LDAP settings.
		$host = "ldaps://{URL}";
		$port = 636;
		$admindn = "{DN}";
		$adminpass = "{PASSWORD};
		$basedn = "{CONTEXT}";
		$error = "";

		$auth = false;

			// Try to connect to the LDAP server.
			$ldapconn = ldap_connect($host, $port) or die("Could not authenticate LDAP username and password");
			if (ldap_bind($ldapconn, $admindn, $adminpass))
			{
				// Retrieve the user's LDAP distinguished name.
				$results = ldap_search($ldapconn, $basedn, "cn=$username");
				$info = ldap_get_entries($ldapconn, $results);

				$ldapuser->dn = $info[0]["dn"];

				// Attempt to bind with the user's dn and entered password.
				if (!empty($ldapuser->dn))
				{
					// Process login as normal.
					if (trim($password) != "")
					{
						$auth = ldap_bind($ldapconn, $ldapuser->dn, $password);
					}
				}
			}
		}