PHP Mysql - Tombol Hapus terus menghapus baris terbaru

Di sini Anda harus melewati $_POST['postid']

if(isset($_POST['posteraser'])){
   $postid = $_POST['postid'];
   $sql = query("DELETE FROM post_list WHERE postid = '$postid' ");       
   redirect ('home.php');
}

ATAU sebagai cara prosedur

$sql = query("DELETE FROM post_list WHERE postid = ? ",$postid);