The page I am working on has a javascript function executed to print parts of the page. For some reason, printing in Safari, causes the window to somehow update. I say somehow, because it does not really refresh as in reload the page, but rather it starts the "rendering" of the page from start, i.e. scroll to top, flash animations start from 0, and so forth. The effect is reproduced by this fiddle: http://jsfiddle.net/fYmnB/ Clicking the print button and finishing or cancelling a print in Safari causes the screen to "go white" for a sec, which in my real website manifests itself as something "like" a reload. While running print button with, let's say, Firefox, just opens and closes the print dialogue without affecting the fiddle page in any way. Is there something with my way of calling the browsers print method that causes this, or how can it be explained - and preferably, avoided? P.S.: On my real site the same occurs with Chrome. In the ex
I usually make a field in the users table called admin or in this case maybe privilege_level, then in your php, you define what values of that field correspond to what levels of privilege.
ReplyDeleteEDIT (example):
// start session on every page using $_SESSION array
session_start();
session_name("Your Site Name");
header("Cache-control: private");
// in login file:
$q = mysql_query("SELECT uid, privilege_level FROM users WHERE pw = 'escaped_and_preferrably_hashed_password' AND username = 'escaped_username' LIMIT 0,1");
// if row found:
if($q && mysql_num_rows($q) > 0){
// get associative array
$array = mysql_fetch_assoc($q);
// set session vars
$_SESSION['privilege_level'] = $array['privilege_level'];
}
Then, on pages where you want to check the privilege level you can use a switch or other control structure/design pattern to load content dynamically, ie:
switch($_SESSION['privilege_level']){
default:
echo 'you have no privileges';
break;
case "1":
echo 'you have some privileges';
break;
case "2":
echo 'you have lots of privileges';
break;
}
When the user logs on they are giving a username/password. The database should store this username and a hash of the password. For Ex.md5($password). You first do a query like "SELECT privilege_level FROM table WHERE username = ".mysql_real_escape_string ($_POST["username"])." AND password=".md5($_POST["password"])
ReplyDeleteThen save that privilege_level to the session. $_SESSION["privilege_level"] = $privilege_level
Now when they load the next page, that page should refer to the privilege level in session variable to construct the page.