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How to redirect users to previous page using SESSION and/or COOKIES

Thread began 4/27/2012 6:17 pm by danny405167 | Last modified 4/30/2012 9:42 am by danny405167 | 2470 views | 1 replies

Jason ByrnesWebAssist

1) This code uses the switch case concept. You cannot add an else statement to the switch .. case.


think of it as a switchboard.


the switch statement sets a variable to be used for comparison. the case statement sets an action to be performed if the comparison variables matches the case value.

the code:

php:
switch($_SESSION['userLevel']) { 

    case "1": 
        header("Location: admin_index.php"); 
        break; 
    case "2": 
        header("Location: clients_index.php"); 
        break; 
}



could also be written using if... else, but switch... case is more efficient:

php:
<?php

if($_SESSION['userLevel'] == "1") {
    
header("Location: admin_index.php"); 
} elseif(
$_SESSION['userLevel'] == "2") {
    
header("Location: clients_index.php"); 
}
?>




to add a third scenario to the switch... case code, you just need to add another case statement:

php:
switch($_SESSION['userLevel']) { 

    case "1": 
        header("Location: admin_index.php"); 
        break; 
    case "2": 
        header("Location: clients_index.php"); 
        break; 
    case "3": 
        header("Location: admin_index.php"); 
        break; 
}




2) Redirecting back to the previous page is not done using a session variable. when you access a proteced page, it redirects to the login page with a querystring varaible that contains the path to the protected page named "accesscheck":
users_login.php?accesscheck=%2Fsculptortocms%2Fadmin_cms%2Findex.php%3F

just make sure that the action of the login form on the login page is set to pass any existing querystreing variables by using this code for the action attribute:

php:
 action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?><?php echo (isset($_SERVER["QUERY_STRING"]) && $_SERVER["QUERY_STRING"] != "")?"?".htmlspecialchars($_SERVER["QUERY_STRING"]):""?>"

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