<?php
 
$buyList = array(
        array('name' => 'Телевизор', 'price' => '400', 'quantity' => 1),
        array('name' => 'Телефон', 'price' => '300', 'quantity' => 3),
        array('name' => 'Кросовки', 'price' => '150', 'quantity' => 2),
    );
 
     function resultBuyList($buyList)
     {  
 
     	$creditCount = 0;
     	$productCount = 0;
        foreach ($buyList  as $key => $value) { 
            $credits = $value['quantity'] * $value['price'];
            $creditCount += $credits;
            $productCount += $value['quantity'];
        }
         return $result = "Вы купили $productCount единиц товара, общая сумма к оплате: $creditCount";
    }
 
 
    echo resultBuyList($buyList);

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