ok firstly, create a database (mysql) :
Table:
Password char(100);
url char(200);
ok now create a form that recieves the password from the administrator:
<?php
include "authorize.php"; // COde to authorize the user.
if(isValidUser()) {
echo "<form action='url' method=post>";
echo "Password: <input type=password name=password value=''>";
echo "<input type=submit value=send name=submit>";
echo "</form>";
}
?>
now introduce the password form. asking for a single password. then you vertify
<?php
include "mysql.php"; // functions for connected to a mysql database.
$d= $_POST['password'];
$result = mysql_query("Select url from pages where password = '$password'", $db);
if($loc = mysql_fetch_object($result))
header("Location: $loc->url"); //path if it is valid.
else
header("Location: Login.php"); //Path if the password is invalid
?>
this would be helpful if you know some php and mysql.