Så får du sgu det hele - jeg må ha kedet mig ;-)
<?php
// dette er forsiden.
include("sql.php");
include("login.php");
session_start();
$velkomst = tjeklogin();
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Untitled</title>
</head>
<body>
<?php
print $velkomst;
?>
<br />
<form action="<?php $_SERVER["PHP_SELF"]; ?>" method="post">
<input type="hidden" name="logind" value="logind">
Brugernavn:<br>
<input type="text" name="navn"><br>
Password:<br>
<input type="password" name="pass"><br>
<input type="submit" value="Log ind">
</form>
<br />
<a href="logout.php">logout.php</a>
<br/>
<a href="side2.php">link</a>
</body>
</html>
//////////////////////////////
//////////////////////////////
//////////////////////////////
<?php
// dette er side 2.
include("sql.php");
include("login.php");
session_start();
$velkomst = tjeklogin();
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Untitled</title>
</head>
<body>
<?php
print $velkomst;
?>
<br /><br/>
<a href="logout.php">logout.php</a>
<br/>
<a href="side.php">link</a>
</body>
</html>
//////////////////////////////
//////////////////////////////
//////////////////////////////
<?php
//logout.php
session_start();
$_SESSION = array();
session_destroy();
header("Location:forside.php");
exit;
?>
//////////////////////////////
//////////////////////////////
//////////////////////////////
<?php
// login.php
function tjeklogin(){
if(!isset($_SESSION["username"],$_SESSION["id"]) || $_SESSION["id"] != session_id){
if(isset($_POST["navn"],$_POST["pass"])){
return login($_POST["navn"],$_POST["pass"]);
}else{
return "Her skal du logge ind";
// ovenstående liner kan erstattes med header("location:logud_igenigen.php"); husk så at have formen der.
}
}else{
return "velkommen ".$_SESSION["username"];
}
}
function login($navn, $pass) {
$sql = mysql_query("SELECT * FROM users WHERE brugernavn = '".$navn."' AND password= MD5('".$pass."') LIMIT 0,1")or die(mysql_error());
if(mysql_num_rows($sql) != 0){
while($r = mysql_fetch_array($sql)){
$_SESSION["username"] = $r["nick"];
$_SESSION["id"] = session_id;
}
// return "YEAH MAN";
header("location:$_SERVER[PHP_SELF]?".$r["brugernavn"]);
}else{
return "Forkert brugernavn eller password";
}
}
?>
//////////////////////////////
//////////////////////////////
//////////////////////////////
Sider uden loginkrav fjerner du : $velkomst = tjeklogin();
slut bum finito
