function show_movies_rate($db, $argv)
{
    if (verif_float($argv[3])) {
        $num = intval($argv[3]);
        $collection = $db->createCollection("movies");
        $range = array('$gte' => (double) $argv[3], '$lte' => (double) $argv[3] + 0.9);
        $cursor = $collection->find(array('rate' => $range));
        $i = 0;
        foreach ($cursor as $film) {
            echo_movie($film);
            $i++;
        }
        if ($i == 0) {
            echo "Sorry, no movie found.\n";
        } else {
            echo "*" . $i . "*\n";
        }
    } else {
        echo "Error: Must be an int between 0 and 10.\n";
    }
}
function show_movies_rate($db, $argv)
{
    if (verif_float($argv[3])) {
        $num = intval($argv[3]);
        $collection = $db->createCollection("movies");
        $range = array('$gte' => (double) $argv[3], '$lte' => (double) $argv[3] + 0.9);
        $cursor = $collection->find(array('rate' => $range));
        $i = 0;
        foreach ($cursor as $film) {
            echo_movie($film);
            $i++;
        }
        if ($i == 0) {
            echo "Sorry, there is no film according to your research.\n";
        } else {
            echo "*" . $i . "*\n";
        }
    } else {
        echo "Error: Must be an int between 0 and 10.\n";
    }
}