xyzshop/helper/refill/policy/mavg_price.php

<?php

namespace refill;

class  mavg_price
{
    private $mMchidPrices;
    public function __construct()
    {
        $this->mMchidPrices = [];
    }

    public function setPrice($mchid,$quality,$card_type,$spec,$avg_price)
    {
        $key = "{$mchid}-{$quality}-{$card_type}-{$spec}";
        if(array_key_exists($key,$this->mMchidPrices)) {
            return $this->mMchidPrices[$key];
        } else {
            $this->mMchidPrices[$key] = $avg_price;
        }
    }

    public function getPrice($mchid,$quality,$card_type,$spec)
    {
        $key = "{$mchid}-{$quality}-{$card_type}-{$spec}";
        if(array_key_exists($key,$this->mMchidPrices)) {
            return $this->mMchidPrices[$key];
        } else {
            return false;
        }
    }
}