How to limit the number of requests per minute?

Question

Yii

I extract data from VK. But VK complains that I am doing too many requests per second. How it is possible to bypass it?
In the code below, I first get the number of posts, how many times I need to offset and I already get the posts.

$piecesPosts = Yii::$app->vk->api('wall.get', array('owner_id' => '-10639516'));

        $countPiecesPosts = $piecesPosts['response'][0];
        $cp = $countPiecesPosts / 100;
        $cp = ceil($cp);
        for ($c = 0; $c < $cp; $c++) {
            $coue = 99 * $c;

            $getPosts = Yii::$app->vk->api('wall.get', array('owner_id' => '-10639516', 'count' => '99', 'offset' => $coue));
}

Answer 1

php.net/manual/en/function.sleep.php
php.net/manual/en/function.time-nanosleep.php
php.net/manual/en/function.usleep.php