back button problem

sunanurag · #1 (**permalink**) 08-25-09, 07:02 AM

Hi Everyone,
I ve created one login page. In this if username and password is correct then it will open a new page, otherwise it will show an error msg on the same page but in a division that"wrong username or password".
now my problem is when i am giving wrong username and password then it is showing the error msg. now if next time i will give correct username and password then it will show me the new page but if i use browser's back buton, then it will come back to the login page but that error msg will be there. I dont wanr this.
Can nyone please tell me that where is the problem, and how to solve it.
Thanks in advance.

therocket954 · #2 (**permalink**) 08-25-09, 07:13 AM

Post some code if you can... but most likely it sounds like you might not be keeping the session open on all pages.

Look for something similar to this on your "authorized" page, and make sure it appears on your login page as well.

PHP Code:


			
session_start();

Or as well, your login page could be looking for $_POST or $_GET values instead of $_SESSION values which would cause this to happen.

sunanurag · #3 (**permalink**) 08-25-09, 07:21 AM

Thanks for reply,
frankly speaking i ve just started php coding 4 days back. I m very new for it. So please if you can then just write a small demo code for me for this situation.
waiting...

wirehopper · #4 (**permalink**) 08-25-09, 07:33 AM

Please post the code you have.

sunanurag · #5 (**permalink**) 08-26-09, 12:00 AM

PHP Code:


			
<?php

session_start();

$_session["count"]=0;

?>



<html>

<head>



<link href=\"Style.css\" rel=\"stylesheet\" type=\"text/css\" />

</head>

<body style="background-color:#fff">

<form action="1.php" method="post">

<div class="outerBlock">

<table cellpadding="4" align=center >

<tr><td>Username</td><td><input type=text name=username></td></tr><br/>

<tr><td>Password</td><td><input type=password name=password></td></tr><br/>

<tr><td>

</td></tr><br/>

<tr><td><input type=submit name="submit" value="Login"></td></tr>

</table>







<?php

if(isset($_POST['submit']))

{

    if(($_POST['username'] == "abc") && ($_POST['password']== "abc"))

    {

        header("Location:2.php");

    }



    else

    {

        $_session["count"]=1;

    }

}

?>



<?php

if($_session["count"]==1)

{

?>

<div style="background-color:#3399cc; left: 650px; top:-110px; position:relative; width :241px; height :31px">Please enter the correct Login Details</div>

<?php

}

?>

</div>

</form>

</body>

</html>

wirehopper · #6 (**permalink**) 08-26-09, 07:27 AM

PHP is case-sensitive, use $_SESSION, instead of $_session.