index.php

<?php

    require_once __DIR__ . '/vendor/autoload.php';

    use Hp\Test\Functions;

    $func = new Functions();
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1>Function 1</h1>
    <?php
        $array = [
            ['price'=>10, 'count'=>2],
            ['price'=>5, 'count'=>5],
            ['price'=>8, 'count'=>5],
            ['price'=>12, 'count'=>4],
            ['price'=>8, 'count'=>4],
        ];
        print_r($func->sortPrice($array));
    ?>
</body>
</html>