[SOLVED] Customized Log-in using PHP

[halm1985]

I use dreamweaver in designing my a web-based project ..

 

There are three types of users : Students, Instuctors and Admins

Each user category has a prefex in ID .. e.g. st0001 or in0003 which is submitted with a password upon log-in

 

What i need is to customize log-in based on the first two chracters of the user ID

 

In other words , how to perform the following using PHP ?

 

IF user ID starts with "st"

Then go to student.php

 

else If User ID starts with "in"

Then go to instructor.php

 

Note : All user IDs and Passwords are stored in a Credentials tabel in the database

[AndyB]

substr ->http://ca.php.net/manual/en/function.substr.php

 

header ->http://ca.php.net/manual/en/function.header.php (to redirect to a defined URL

[MadTechie]

the basic is here

<?php
$ID = "st0001";
if(substr($ID, 0, 2) == "st")
{
//goto student
}
?>

[halm1985]

I got the idea but still don't know where exactly to implement this code, there are 3 cases ( student, instructor, admin) this is the code generated by Dreamweaver for access to only students page, T1 is the name of the UserID text box

 

if (isset($_POST['t1'])) {

  $loginUsername=$_POST['t1'];

  $password=$_POST['t2'];

  $MM_fldUserAuthorization = "";

 

  $MM_redirectLoginSuccess = "student_designed.php";

 

  $MM_redirectLoginFailed = "try_again.html";

  $MM_redirecttoReferrer = true;

  mysql_select_db($database_test, $test);

 

  $LoginRS__query=sprintf("SELECT ID, Password FROM credentials WHERE ID='%s' AND Password='%s'",

    get_magic_quotes_gpc() ? $loginUsername : addslashes($loginUsername), get_magic_quotes_gpc() ? $password : addslashes($password));

 

  $LoginRS = mysql_query($LoginRS__query, $test) or die(mysql_error());

  $loginFoundUser = mysql_num_rows($LoginRS);

  if ($loginFoundUser) {

    $loginStrGroup = "";

   

    //declare two session variables and assign them

    $_SESSION['MM_Username'] = $loginUsername;

    $_SESSION['MM_UserGroup'] = $loginStrGroup;      

 

    if (isset($_SESSION['PrevUrl']) && true) {

      $MM_redirectLoginSuccess = $_SESSION['PrevUrl'];

    }

    header("Location: " . $MM_redirectLoginSuccess );

  }

  else {

    header("Location: ". $MM_redirectLoginFailed );

  }

 

 

[MadTechie]

it would be something like this

 

if (isset($_POST['t1'])) {
$ID = $_POST['t1']
if(substr($ID, 0, 2) == "st")
{
  $MM_redirectLoginSuccess = "student_designed.php";
  $loginUsername= "student";//$_POST['t1'];
  $password=$_POST['t2'];
}

  $MM_fldUserAuthorization = "";

 

that should give you a push in the right direction

[halm1985]

Thanks very much for your help .. i'll work on that

[halm1985]

 

if(substr($ID, 0, 2) == "st")

 

this line causes the following error in the PHP page

 

Parse error: syntax error, unexpected T_IF in C:\wamp\www\login.php on line 14

[AndyB]

Nothing intrinsically wrong with that line.  Please post lines 1-15 of your code.

[MadTechie]

$ID = $_POST['t1']

should be

$ID = $_POST['t1'];

 

 

[halm1985]

That's what i made

 

$id = $_POST['t1'];

if(substr($id, 0, 2) == 'st')
{
  $MM_redirectLoginSuccess = "student_designed.php";

  $loginUsername=$_POST['t1'];
  $password=$_POST['t2'];
}
else if(substr($id, 0, 2) == 'in')
{
  $MM_redirectLoginSuccess = "instructor_designed.php";

  $loginUsername=$_POST['t1'];
  $password=$_POST['t2'];
}

else if(substr($id, 0, 2) == 'ad')
{
  $MM_redirectLoginSuccess = "admin_designed.php";

  $loginUsername=$_POST['t1'];
  $password=$_POST['t2'];
}

 

The question is where to put the code of redirection in case of log-in failure

$MM_fldUserAuthorization = "";

 

 

 

  $MM_redirectLoginFailed = "try_again.html";
  $MM_redirecttoReferrer = true;
  mysql_select_db($database_test, $test);

 

this code always executes and goes direcltly to the TRY AGAIN Page

[MadTechie]

may help if $test was being set

[halm1985]

Finally I did ..

Thank you very much MadTechie , Andy

 

The following made it work

 

if (isset($_POST['textfield1'])) {
  $loginUsername=$_POST['t1'];
  $password=$_POST['textfield2'];
  $MM_fldUserAuthorization = "";
  

	if(substr($loginUsername, 0, 2) == 'st')
	$MM_redirectLoginSuccess = "student.php";

	if(substr($loginUsername, 0, 2) == 'in')
	$MM_redirectLoginSuccess = "instructor.php";

	if(substr($loginUsername, 0, 2) == 'ad')
	$MM_redirectLoginSuccess = "admin.php";


    
  $MM_redirectLoginFailed = "try_again.html";
    
  $MM_redirecttoReferrer = true;
  mysql_select_db($database_test, $test);

 

...

...

..

 

Thanks again people

 

 

[MadTechie]

well done

 

can you please click solved (bottom left)