yatang/vendor/riverslei/payment/examples/wx/settlement.php

<?php

/*
 * The file is part of the payment lib.
 *
 * (c) Leo <dayugog@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

require_once __DIR__ . '/../../vendor/autoload.php';

date_default_timezone_set('Asia/Shanghai');
$wxConfig = require_once __DIR__ . '/../wxconfig.php';

// 订单信息
$params = [
    'bill_date' => '20200201',
    'bill_type' => 'Basic',
];

// 使用
try {
    $client = new \Payment\Client(\Payment\Client::WECHAT, $wxConfig);
    $res    = $client->settleDownload($params);
} catch (InvalidArgumentException $e) {
    echo $e->getMessage();
    exit;
} catch (\Payment\Exceptions\GatewayException $e) {
    echo $e->getMessage();
    exit;
} catch (\Payment\Exceptions\ClassNotFoundException $e) {
    echo $e->getMessage();
    exit;
}

var_dump($res);