if(isset($_COOKIE['ID_my_site']))

//if there is, it logs you in and directes you to the members page

{ 	$username = $_COOKIE['ID_my_site']; 	$pass = $_COOKIE['Key_my_site']; 	 	$check = mysql_query("SELECT * FROM users WHERE username = '$username'")or die(mysql_error()); 	while($info = mysql_fetch_array( $check )) 	 		{ 		if ($pass != $info['password']) 			{ 			 			} 		else 			{ 			header("Location: members.php"); 			} 		} }

//if the login form is submitted

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

// if form has been submitted
// makes sure they filled it in
 	if(!$_POST['username'] | !$_POST['pass']) {
 		die('You did not fill in a required field.');
 	}
 	// checks it against the database

 	if (!get_magic_quotes_gpc()) {
 		$_POST['email'] = addslashes($_POST['email']);
 	}
 	$check = mysql_query("SELECT * FROM users WHERE username = '".$_POST['username']."'")or die(mysql_error());

 //Gives error if user dosen't exist
 $check2 = mysql_num_rows($check);
 if ($check2 == 0) {
 		die('That user does not exist in our database. <a href=add.php>Click Here to Register</a>');
 				}
 while($info = mysql_fetch_array( $check ))
 {
 $_POST['pass'] = stripslashes($_POST['pass']);
 	$info['password'] = stripslashes($info['password']);
 	$_POST['pass'] = md5($_POST['pass']);

 //gives error if the password is wrong
 	if ($_POST['pass'] != $info['password']) {
 		die('Incorrect password, please try again.');
 	}
else { // if login is ok then we add a cookie
$_POST['username'] = stripslashes($_POST['username']); 	 $hour = time() + 3600; setcookie(ID_my_site, $_POST['username'], $hour); setcookie(Key_my_site, $_POST['pass'], $hour);	 //then redirect them to the members area
header("Location: members.php"); } } }
else {	 // if they are not logged in
?> <form action="<?php echo $_SERVER['PHP_SELF']?>" method="post"> <table border="0"> <tr><td colspan=2><h1>Login</h1></td></tr> <tr><td>Username:</td><td> <input type="text" name="username" maxlength="40"> </td></tr> <tr><td>Password:</td><td> <input type="password" name="pass" maxlength="50"> </td></tr> <tr><td colspan="2" align="right"> <input type="submit" name="submit" value="Login"> </td></tr> </table> </form> <?php } ?>