<?php
$thh=mysql_query("select p_id from fmd_encok where p_id='19' order by adet desc limit ".fmd_sabit("1"));
while($g=mysql_fetch_object($thh))$ref[]=$g->p_id;

$args = array( 'post__in' => $ref );
$posts_array = get_posts( $args ); 
foreach ($posts_array as $post) :  setup_postdata($post); 
?>