收到Webhook后，PHP脚本不会更新数据库

Question

付款成功后，Shopify将一个Webhook发送到我的订单管理系统，以更新我的客户已付款的本地数据库，并在订单上留下一条消息。

我对PHP不好，因此我愿意付钱给别人把它整理好。有什么好心可以帮助我吗？我认为那里使用的系统不相关，但是它是FreeBSD 12，nginx和PHP 7.3.4

public function mark_additionals_as_paid( )
{
    define('SHOPIFY_APP_SECRET', 'MY_SECRET_KEY');

    $hmac_header = $_SERVER['HTTP_X_SHOPIFY_HMAC_SHA256'];
    $data = file_get_contents('php://input');
    $verified = $this->_verify_webhook($data, $hmac_header);

    if( $verified ) {

        $returnedOrder = json_decode($data);

        if( $returnedOrder->status == "completed" ) {

            // search the database to see if this order is from a pending quote approval
            $query = $this->order_details_model->get_order_via_shopify_id( $returnedOrder->id );

            // if a result has been found, update it
            if( $query->num_rows > 0 ) {
                foreach ( $query->result() as $foundOrder ) {

                    $customer_has_paid = 0;
                    $customer_has_paid = $returnedOrder->total_price;

                    foreach ( $returnedOrder->line_items as $line_item ) {
                        // get the line item id contained in shopify response
                        $new_line_item_id = $line_item->id;
                    }

                    // update this order with the shopify data
                    $this->db->set( 'total_price_paid', 'total_price_paid+' . $customer_has_paid, FALSE );
                    $this->db->set( 'additional_order_id', $returnedOrder->order_id );
                    $this->db->where( 'order_id', $foundOrder->order_id );

                    $this->db->update('orders');

                    // add note to the order to show how much was paid
                    $data = array(
                        'order_id' => $foundOrder->order_id,
                        'note' => 'Customer paid £' . $returnedOrder->total_price . ' through Shopify',
                        'date_time' => date( 'Y-m-d H:i:s' ),
                        'user_id' => '1'
                    );

                    $this->timeline->insert( $data );
                }

                /*
                    once finished, query this order and see if the total_price_paid at least matches the total_price column,
                    being higher isn't the end of the world as a refund can be processed. whereas if it's less, the order cannot
                    be sent out
                */

                $query = $this->order_details_model->get_order_via_shopify_id( $returnedOrder->id );

                foreach ( $query->result() as $foundOrder ) {

                    $customer_paid = $foundOrder->total_price_paid;
                    $job_price = $foundOrder->total_price;

                    if( $customer_paid >= $job_price ){

                        // update this order with the shopify data
                        $this->db->set( 'pending_payment', 'n' );
                        $this->db->where( 'order_id', $foundOrder->order_id );

                        $this->db->update('orders');

                        // add note to the order to show outstanding balance has been paid
                        $data = array(
                            'order_id' => $foundOrder->order_id,
                            'note' => 'Outstanding balance has been paid (£' . $customer_has_paid . ')',
                            'date_time' => date( 'Y-m-d H:i:s' ),
                            'user_id' => '1'
                        );

                        $this->timeline->insert( $data );

                    }

                }

            }

        }

        // shopify keeps trying to send until an ok response is received
        header('HTTP/1.0 200 OK');
    } else {
        header('HTTP/1.0 200 OK');
    }

}