Sanırım saf PHP, framework değil.

<?php 
session_start();
ob_start();    
include("../.php");
include("../.php");
$ayar = @mysqli_query($baglanti,"SELECT * FROM ayarlar WHERE id='1'");
$ayar = $ayar->fetch_assoc();
if(isset($_SESSION["id"])){
    header("Location: ../hesabim/index.php");
    exit;
}
if(isset($_POST["kadi"]) && isset($_POST["pass"])){

    
$kadi=htmlentities($_POST["kadi"], ENT_QUOTES, "UTF-8");
$pass=htmlentities($_POST["pass"], ENT_QUOTES, "UTF-8");
$pass=md5($pass);