    <?php
    class Api
    {
        /** API URL */
        public $api_url = 'https://hevoteam.com/api/v2';

        /** Your API key */
        public $api_key = '';

        /** Add order */
        public function order($data)
        {
            $post = array_merge(['key' => $this->api_key, 'action' => 'add'], $data);
            return json_decode((string)$this->connect($post));
        }

        /** Get order status  */
        public function status($order_id)
        {
            return json_decode(
                $this->connect([
                    'key' => $this->api_key,
                    'action' => 'status',
                    'order' => $order_id
                ])
            );
        }

        /** Get orders status */
        public function multiStatus($order_ids)
        {
            return json_decode(
                $this->connect([
                    'key' => $this->api_key,
                    'action' => 'status',
                    'orders' => implode(",", (array)$order_ids)
                ])
            );
        }

        /** Get services */
        public function services()
        {
            return json_decode(
                $this->connect([
                    'key' => $this->api_key,
                    'action' => 'services',
                ])
            );
        }

        /** Refill order */
        public function refill(int $orderId)
        {
            return json_decode(
                $this->connect([
                    'key' => $this->api_key,
                    'action' => 'refill',
                    'order' => $orderId,
                ])
            );
        }

        /** Refill orders */
        public function multiRefill(array $orderIds)
        {
            return json_decode(
                $this->connect([
                    'key' => $this->api_key,
                    'action' => 'refill',
                    'orders' => implode(',', $orderIds),
                ]),
                true,
            );
        }

        /** Get refill status */
        public function refillStatus(int $refillId)
        {
             return json_decode(
                $this->connect([
                    'key' => $this->api_key,
                    'action' => 'refill_status',
                    'refill' => $refillId,
                ])
            );
        }

        /** Get refill statuses */
        public function multiRefillStatus(array $refillIds)
        {
             return json_decode(
                $this->connect([
                    'key' => $this->api_key,
                    'action' => 'refill_status',
                    'refills' => implode(',', $refillIds),
                ]),
                true,
            );
        }

        /** Cancel orders */
        public function cancel(array $orderIds)
        {
            return json_decode(
                $this->connect([
                    'key' => $this->api_key,
                    'action' => 'cancel',
                    'orders' => implode(',', $orderIds),
                ]),
                true,
            );
        }

        /** Get balance */
        public function balance()
        {
            return json_decode(
                $this->connect([
                    'key' => $this->api_key,
                    'action' => 'balance',
                ])
            );
        }

        private function connect($post)
        {
            $_post = [];
            if (is_array($post)) {
                foreach ($post as $name => $value) {
                    $_post[] = $name . '=' . urlencode($value);
                }
            }

            $ch = curl_init($this->api_url);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_HEADER, 0);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

            if (is_array($post)) {
                curl_setopt($ch, CURLOPT_POSTFIELDS, join('&', $_post));
            }
            curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)');
            $result = curl_exec($ch);
            if (curl_errno($ch) != 0 && empty($result)) {
                $result = false;
            }
            curl_close($ch);
            return $result;
        }
    }

    // Examples

    $api = new Api();

    $services = $api->services(); # Return all services

    $balance = $api->balance(); # Return user balance

    // Add order

    $order = $api->order(['service' => 1, 'link' => 'http://example.com/test', 'quantity' => 100, 'runs' => 2, 'interval' => 5]); # Default

    $order = $api->order(['service' => 1, 'link' => 'http://example.com/test', 'comments' => "good pic\ngreat photo\n:)\n;)"]); # Custom Comments

    $order = $api->order(['service' => 1, 'link' => 'http://example.com/test', 'quantity' => 1000, 'username' => "test"]); # Mentions User Followers

    $order = $api->order(['service' => 1, 'link' => 'http://example.com/test', 'quantity' => 100, 'runs' => 10, 'interval' => 60]); # Drip-feed

    // Old posts only
    $order = $api->order(['service' => 1, 'username' => 'username', 'min' => 100, 'max' => 110, 'posts' => 0, 'delay' => 30, 'expiry' => '11/11/2022']); # Subscriptions

    // Unlimited new posts and 5 old posts
    $order = $api->order(['service' => 1, 'username' => 'username', 'min' => 100, 'max' => 110, 'old_posts' => 5, 'delay' => 30, 'expiry' => '11/11/2022']); # Subscriptions

    $order = $api->order(['service' => 1, 'link' => 'http://example.com/test', 'quantity' => 100, 'username' => "test"]); # Comment Likes

    $order = $api->order(['service' => 1, 'link' => 'http://example.com/test', 'quantity' => 100, 'answer_number' => '7']); # Poll

    $status = $api->status($order->order); # Return status, charge, remains, start count, currency

    $statuses = $api->multiStatus([1, 2, 3]); # Return orders status, charge, remains, start count, currency
    $refill = (array) $api->multiRefill([1, 2]);
    $refillIds = array_column($refill, 'refill');
    if ($refillIds) {
        $refillStatuses = $api->multiRefillStatus($refillIds);
    }