battles/classes/ShopItem.php

<?php

class ShopItem extends Item
{
    public function printInfo()
    {
        if ($this->printControls()) $this->maxdur = 0;

        parent::printBaseInfo();
        parent::printRequirements();
        parent::printBonuses();
        parent::printMagic();
    }

    /**
     * Для кнопок управления под картинкой прелмета в зависимости от ситуации.
     */
    public function printControls($sell = false)
    {
        if ($sell) {
            $btnPrice = "Продать";
            $btnLink = "/shop.php?sell={$this->id}&rnd=".mt_rand();
            $this->maxdur = 0;
        } else {
            $btnPrice = "Купить за " . intval($this->cost) . " кр.";
            $btnLink = "/shop.php?buy={$this->id}&rnd=" . mt_rand();
        }
        echo <<<BTN
<p><input type="button" style="background: darkgrey; border: 1px solid grey; border-radius: 2px;" value="{$btnPrice}"
                                   onclick="location='{$btnLink}'">
BTN;
        if ($this->count > 0) echo "<br><small>В наличии: {$this->count} штук</small>";
    }
}