Problemer med session i login script
selv om jeg logger ud, kan jeg stadig komme ind på login_success.php uden bruger og adgangskode. Hvad har jeg gjort forkert i min kode... der kommer ingen fejlbeskeder.-- Min index.php:
<?php $idx=$_GET['idx']; ?>
<body>
<table width="300" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<form name="form1" method="post" action="checklogin.php">
<td>
<table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF">
<tr>
<td colspan="3"><strong>Member Login </strong></td>
</tr>
<tr>
<td width="78">Username</td>
<td width="6">:</td>
<td width="294"><input name="myusername" type="text" id="myusername"></td>
</tr>
<tr>
<td>Password</td>
<td>:</td>
<td><input name="mypassword" type="password" id="mypassword"></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td><input type="submit" name="Submit" value="Login"></td>
</tr>
</table>
</td>
</form>
</tr>
<?php if($idx==logud) { echo '<tr><td>Du er nu logget ud</td></tr>'; } ?>
</table>
</body>
</html>
-- Min checklogin.php:
<?php
ob_start();
$host="localhost"; // Host name
$username="optur"; // Mysql username
$password="s1t3e7n1"; // Mysql password
$db_name="solar_agency"; // Database name
$tbl_name="members"; // Table name
// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
// Define $myusername and $mypassword
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];
// To protect MySQL injection (more detail about MySQL injection)
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);
$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$result=mysql_query($sql);
// Mysql_num_row is counting table row
$count=mysql_num_rows($result);
// If result matched $myusername and $mypassword, table row must be 1 row
if($count==1){
// Register $myusername, $mypassword and redirect to file "login_success.php"
session_register("$myusername");
session_register("mypassword");
header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
ob_end_flush();
?>
-- Min login_success.php:
<? ob_start();
// Check if session is not registered , redirect back to main page.
// Put this code in first line of web page.
session_start();
if(!session_is_registered(myusername)){
header("location:index.php");
}
?>
<body>
du er nu logget ind<br />
<a href="logout.php">logud</a>
</body>
</html>
<?php
ob_end_flush();
?>
-- Min logud.php:
<?php
ob_start();
session_start();
session_destroy();
header("location:index.php?idx=logud");
ob_end_flush();
?>
