index.php

<?php

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

$func = new Hp\Test\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>