i have homework about this but i don't know how to make it work,
after a few hours it stuck with every login will go to same place
i must create 4 id :
1.owner : can access all page , edit all id
2.chasier : report any item out, only access item out page (item.php)
3.warehouse : add item from purchasing department, add new item, get notification from chasier, tell purchasing department to buy item
4.purchasing department : get notification from warehouse, sent report to warehouse after add stock or add new item
login.php
<table width="300" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<form name="form1" method="post" action="cek_login.php">
<td>
<table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF">
<tr>
<td colspan="3"><strong>Login </strong></td>
</tr>
<tr>
<td width="78">Username</td>
<td width="6">:</td>
<td width="294"><input name="username" type="text" id="username"></td>
</tr>
<tr>
<td>Password</td>
<td>:</td>
<td><input name="password" type="text" id="password"></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td><input type="submit" name="Submit" value="Login"></td>
</tr>
</table>
</td>
</form>
</tr>
</table>
cek_login.php
<?php
$host="localhost";
$username="root";
$password="";
$db_name="shop_system";
$tbl_name="members";
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
$username=$_POST['username'];
$password=$_POST['password'];
$usertype=$_GET['usertype'];
$username = stripslashes($username);
$password = stripslashes($password);
$username = mysql_real_escape_string($username);
$password = mysql_real_escape_string($password);
$sql="SELECT * FROM $tbl_name WHERE username='$username' and password='$password' ";
$result=mysql_query($sql);
$count=mysql_num_rows($result);
if($count==1){
session_register("username");
session_register("password");
header("location:sukses.php");
}
else {
echo "Wrong Username or Password";
}
?>
sukses.php
<?
session_start();
if(!session_is_registered(myusername)){
header("location:main_login.php");
}
?>
<html>
<body>
Login Successful
</body>
</html>