建议chain用法以标准的uri_template方式传参

[TheNorthMemory]

Ity/app/Http/Controllers/Controller.php

Lines 107 to 108 in b626989

	->chain('v3/pay/transactions/id/' . $transactionId)
	->get(['query' => ['mchid' => $merchantId]]);

当然这里的拼接方式是可以工作的，不过仍然建议用标准用法来构造请求，形如：

->chain('v3/pay/transactions/id/{transaction_id}')
->get(['query' => ['mchid' => $merchantId], 'transaction_id' => $transactionId])

另外建议增加依赖 iwechatpay/openapi dev包，上述代码即可以在JB IDE上书写成

->v3->pay->transactions->id->_transaction_id_
->get(['query' => ['mchid' => $merchantId], 'transaction_id' => $transactionId])

即带请求数据结构基础语法提示。