Melkij

$post = $pdo->prepare('SELECT * FROM post ORDER BY id DESC LIMIT 2');
$post->execute();
$news = $post->fetchAll(PDO::FETCH_BOTH);

<?php foreach ($news as $n): ?>
    <p><strong><?php echo $n['date'] ?></strong> <?php echo $n->h1 ?></p>
<?php endforeach ?>

<?php
session_start();

$_SESSION['foo'] = 100;

call_user_func_array(function($args) {
	var_dump($args, $_SESSION);
	}, array(10));

select
sum(value) as month_sum,
sum(case when CURRENT_DATE =f_timestamp::date then value else 0 end) as today_sum
from ... where за этот месяц

select id_item from tablename where (prop = 'naz2' and val = 2) or (prop = 'naz1' and val = 1)
group by id_item
having count(0)=2

select id_item from tablename t1
join tablename t2 using(id_item)
where (t2.prop = 'naz2' and t2.val = 2) and (t1.prop = 'naz1' and t1.val = 1)