php include_once config php if isset _GET id result mysql_query SELECT

<?php
include_once 'config.php';

if(isset($_GET['id'])){
	$result = mysql_query("SELECT * FROM `images` WHERE `id` = '".$_GET['id']."' ");
	 while ($img=mysql_fetch_assoc($result)) {
	 	echo '<img src="'.$dir.$img['name'].'">';
	 }
}
?>