anasayfa.php
<?php

	require_once("oturum.php");
	
	require_once("class.user.php");
	$auth_user = new USER();
	
	
	$user_id = $_SESSION['user_session'];
	
	$stmt = $auth_user->runQuery("SELECT * FROM users WHERE user_id=:user_id");
	$stmt->execute(array(":user_id"=>$user_id));
	
	$userRow=$stmt->fetch(PDO::FETCH_ASSOC);
 
 
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link href="bootstrap/css/bootstrap.min.css" rel="stylesheet" media="screen">
<link href="bootstrap/css/bootstrap-theme.min.css" rel="stylesheet" media="screen">
<script type="text/javascript" src="jquery-1.11.3-jquery.min.js"></script>
<link rel="stylesheet" href="style.css" type="text/css"  />
<title>Hoşgeldin - <?php print($userRow['kullanici_mail']); ?></title>
</head>

<body>

<nav class="navbar navbar-default navbar-fixed-top">
      <div class="container">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <a class="navbar-brand" href="#"><?php print($userRow['kullanici_mail']); ?></a>
        </div>
        <div id="navbar" class="navbar-collapse collapse">
          <ul class="nav navbar-nav">
            <li class="active"><a href="#">Link</a></li> 
          </ul>
          <ul class="nav navbar-nav navbar-right">
            
            <li class="dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
			  <span class="glyphicon glyphicon-user"></span>&nbsp;Merhaba <?php echo $userRow['kullanici_mail']; ?>&nbsp;<span class="caret"></span></a>
              <ul class="dropdown-menu">
                <li><a href="#"><span class="glyphicon glyphicon-user"></span>&nbsp;Xxx
</a></li>
                <li><a href="cikis.php?logout=true"><span class="glyphicon glyphicon-log-out"></span>&nbsp;Çıkış yapın</a></li>
              </ul>
            </li>
          </ul>
        </div><!--/.nav-collapse -->
      </div>
    </nav>


    <div class="clearfix"></div>
    	
    
<div class="container-fluid" style="margin-top:80px;">
	
    <div class="container">
    
    	<label class="h5">Hoşgeldin : <?php print($userRow['kullanici_adi']); ?></label>
        <hr />
        
        <h4>
        <a href="anasayfa.php"><span class="glyphicon glyphicon-home"></span> Anasayfa</a> &nbsp; 
        <a href="#"><span class="glyphicon glyphicon-user"></span> Xxx</a></h4>
       	<hr />
<meta charset="utf-8">
<pre>
	<div class="form">
		<p>Öğrenci numaranız</p>
		<input class="form-control" type="text" name="??" value="<?php echo $??['??']; ?>">
		<p>Öğrenci Şifreniz</p>
		<input class="form-control" type="text" name="??" value="<?php echo $??['??']; ?>">
	</div>
	<button type="submit" name="save" class="btn btn-success">Bilgilerimi Kaydet</button>
	
</pre>
<pre>
	içerik
</pre>
        
    <p class="blockquote-reverse" style="margin-top:200px;">Mikoc<br /> 
    <a href="#">xxx</a>
    </p>
    
    </div>

</div>

<script src="bootstrap/js/bootstrap.min.js"></script>

</body>
</html>

class.user.php
<?php

require_once('dbconfig.php');

class USER
{	

	private $conn;
	
	public function __construct()
	{
		$database = new Database();
		$db = $database->dbConnection();
		$this->conn = $db;
    }
	
	public function runQuery($sql)
	{
		$stmt = $this->conn->prepare($sql);
		return $stmt;
	}
	
	public function register($uname,$umail,$upass)
	{
		try
		{
			$new_password = password_hash($upass, PASSWORD_DEFAULT);
			
			$stmt = $this->conn->prepare("INSERT INTO users(kullanici_adi,kullanici_mail,kullanici_sifre) 
		                                               VALUES(:uname, :umail, :upass)");
												  
			$stmt->bindparam(":uname", $uname);
			$stmt->bindparam(":umail", $umail);
			$stmt->bindparam(":upass", $new_password);										  
				
			$stmt->execute();	
			
			return $stmt;	
		}
		catch(PDOException $e)
		{
			echo $e->getMessage();
		}				
	}
	
	
	public function doLogin($uname,$umail,$upass)
	{
		try
		{
			$stmt = $this->conn->prepare("SELECT user_id, kullanici_adi, kullanici_mail, kullanici_sifre FROM users WHERE kullanici_adi=:uname OR kullanici_mail=:umail ");
			$stmt->execute(array(':uname'=>$uname, ':umail'=>$umail));
			$userRow=$stmt->fetch(PDO::FETCH_ASSOC);
			if($stmt->rowCount() == 1)
			{
				if(password_verify($upass, $userRow['kullanici_sifre']))
				{
					$_SESSION['user_session'] = $userRow['user_id'];
					return true;
				}
				else
				{
					return false;
				}
			}
		}
		catch(PDOException $e)
		{
			echo $e->getMessage();
		}
	}
	
	public function is_loggedin()
	{
		if(isset($_SESSION['user_session']))
		{
			return true;
		}
	}
	
	public function redirect($url)
	{
		header("Location: $url");
	}
	
	public function doLogout()
	{
		session_destroy();
		unset($_SESSION['user_session']);
		return true;
	}
}
?>
(lazım olucaksa)
kayit-ol.php
<?php
session_start();
require_once('class.user.php');
$user = new USER();

if($user->is_loggedin()!="")
{
	$user->redirect('anasayfa.php');
}

if(isset($_POST['btn-signup']))
{
	$uname = strip_tags($_POST['txt_uname']);
	$umail = strip_tags($_POST['txt_umail']);
	$upass = strip_tags($_POST['txt_upass']);	
	
	if($uname=="")	{
		$error[] = "Kullanıcı adınızı girin";	
	}
	else if($umail=="")	{
		$error[] = "Mail adresinizi girin";	
	}
	else if(!filter_var($umail, FILTER_VALIDATE_EMAIL))	{
	    $error[] = 'Geçerli bir mail adresi girin';
	}
	else if($upass=="")	{
		$error[] = "Şifrenizi girin";
	}
	else if(strlen($upass) < 6){
		$error[] = "Şifreniz en az 6 karakterden oluşmalıdır";	
	}
	else
	{
		try
		{
			$stmt = $user->runQuery("SELECT kullanici_adi, kullanici_mail FROM users WHERE kullanici_adi=:uname OR kullanici_mail=:umail");
			$stmt->execute(array(':uname'=>$uname, ':umail'=>$umail));
			$row=$stmt->fetch(PDO::FETCH_ASSOC);
				
			if($row['kullanici_adi']==$uname) {
				$error[] = "Kullanıcı adı zaten alınmış";
			}
			else if($row['kullanici_mail']==$umail) {
				$error[] = "Bu epostaya kayıtlı bir hesap zaten vardır, şifrenizi unuttuysanz iletişim sayfamızdan bilginizle birlikte bildirimde bulununuz";
			}
			else
			{
				if($user->register($uname,$umail,$upass)){	
					$user->redirect('kayit-ol.php?joined');
				}
			}
		}
		catch(PDOException $e)
		{
			echo $e->getMessage();
		}
	}	
}

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Hoşgeldin misafir :-)</title>
<link href="bootstrap/css/bootstrap.min.css" rel="stylesheet" media="screen">
<link href="bootstrap/css/bootstrap-theme.min.css" rel="stylesheet" media="screen">
<link rel="stylesheet" href="style.css" type="text/css"  />
</head>
<body>

<div class="container"><br>
<div class="container">
        <form method="post" class="form-signin">
            <h2 class="form-signin-heading">Kayıt olun</h2><hr/>
            <?php
			if(isset($error))
			{
			 	foreach($error as $error)
			 	{
					 ?>
                     <div class="alert alert-danger">
                        <i class="glyphicon glyphicon-warning-sign"></i> &nbsp; <?php echo $error; ?>
                     </div>
                     <?php
				}
			}
			else if(isset($_GET['joined']))
			{
				 ?>
                 <div class="alert alert-info">
                      <i class="glyphicon glyphicon-log-in"></i> &nbsp; Başarıyla kayıt oldunuz <a href='index.php'>Giriş</a> yapabilirsiniz
                 </div>
                 <?php
			}
			?>
            <div class="form-group">
            <input type="text" class="form-control" name="txt_uname" placeholder="Kullanıcı adınız" value="<?php if(isset($error)){echo $uname;}?>" />
            </div>
            <div class="form-group">
            <input type="text" class="form-control" name="txt_umail" placeholder="Mail adresiniz" value="<?php if(isset($error)){echo $umail;}?>" />
            </div>
            <div class="form-group">
            	<input type="password" class="form-control" name="txt_upass" placeholder="Şifreniz" />
            </div> 
             
            <div class="clearfix"></div><hr />
            <div class="form-group">
            	<button type="submit" class="btn btn-primary" name="btn-signup">
                	<i class="glyphicon glyphicon-open-file"></i>&nbsp;KAYIT OL
                </button>
            </div>
            <br />
            <label>Hesabınız varsa<a href="index.php"> giriş yapın</a></label>
        </form>
       </div>
</div>

</div>

</body>
</html>

anasayfa.php deki bu




ogrencı no ve sıfreyı veritabannda








buraya yazmak ve guncellemek cn anasayfa php deki kodlar nasl yazmalııyız, baya ugastım üstesinden gelemedim yardımcı olabılen olursa cok sevınırım arkadaslar