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Redirect based on session variable


digi duck

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Hi. I am trying to create a very simple admin login page that will let only me access a number of pages. I am trying the following code for the login page:

 

<?php session_start();

// Define your username and password 
$username = "username"; 
$password = "password"; 

if ($_POST['txtUsername'] == $username && $_POST['txtPassword'] == $password)
{ $_SESSION['admin']="true"; 
header("location: admin.php");
}
?>

### HTML code and form for entering in username and password with action echoing it back to itself ### 

 

On  the admin.php page i then try:

 

<?php 
if ($_SESSION['admin'] != "true") 
{ header("location: login.php");}
else { ?>


### code for the rest of the page ###

 

I am fairly new to all this and cant understand why its remaining on the login page and not sending me to admin.php when the password and username are correct. Is this the correct way to be going about it? I envisaged simply adding the above code to the top of any page only the admin could see. Any help is much appreciated.

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