Still cannot understand sessions.

[u214]

Hello guys. I'm back with a quick question that I don't seem to understand.

 

How exactly you create a session?

I know the very basics of it, and that includes:

<form action="Logged.php" method="post" >
    <input type="text" name="User" />
    <input type="password" name="Password" />
    <input type="submit" value="Login" />
    <input type="reset" value="Clear" />
</form>

Start with my log-in form.

 

This is called when you log-in:

				<?php
				include("config.php");
				if(isset($_SESSION["Username"]))
				{
					$user = $_SESSION["Username"];
					$pass = md5($_SESSION["Password"]);
				}
				else
				{
					$user = $_POST["User"];
					$pass = md5($_POST["Password"]);
					$_SESSION['Username'] = $user;
					$_SESSION['Password'] = $pass;

					$escuser = mysql_real_escape_string($user);
					$escpass = mysql_real_escape_string($pass);
				}

				$result = mysql_query("SELECT * FROM testWHERE user = '$escuser'");
				$num_rows = mysql_num_rows($result);
				if($num_rows == 0)
				{
					echo('That username does not exist...');
					echo '<a href="something.php"">  Go back!</a>';
					unset($_SESSION['Username']);
					unset($_SESSION['Password']);
					die;
				}

				$row = mysql_fetch_row($result);
				if($row[1] !== $escpass)
				{
				    echo('Wrong Password!...');
				    echo '<a href="something.php">  Go Back!</a>';
      					unset($_SESSION['Username']);
				    unset($_SESSION['Password']);
				    die;
				}
			?>

Like I said above, the very basics. On that Logged.php page ( Which I got the above code from ) does not have:

<?php  session_start(); ?>

 

^ That's what I am having trouble with. Am I supposed to add that on top of EVERY page I have?

 

I just need a quick rough-draft on how it should be, you don't need to use my examples, I just need to see a small preview of a log-in and then you can be able to access every page WHILE still logged.

 

Thanks.

[fugix]

every page that you need to call a $_SESSION[] global needs to contain session_start() at the beginning of the script, yes