<?php
try{
$db = new PDO("mysql:host=localhost;dbname=demo;charset=utf8", "root", "roottoor");
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch(PDOException $e){
echo "Bağlantı hatası: " . $e->getMessage();
}

$query = $db->prepare("SELECT * FROM sitekategoriler");
$query->execute();

if($query->rowCount()){   
    foreach($query as $row){       
    echo $row['kat_adi']."<br />";
    }
}
?>