第一次请求返回的格式

array(10) {
  ["return_code"]=>
  string(7) "SUCCESS"
  ["return_msg"]=>
  string(2) "OK"
  ["appid"]=>
  string(18) "wx6e0****dc7730f98"
  ["mch_id"]=>
  string(10) "158****061"
  ["nonce_str"]=>
  string(16) "7M4v****xat528qb"
  ["sign"]=>
  string(32) "7F5FF282F3C95****305BA031F50D715"
  ["result_code"]=>
  string(7) "SUCCESS"
  ["prepay_id"]=>
  string(36) "wx05104626334****4a97c6dc21008915800"
  ["trade_type"]=>
  string(4) "MWEB"
  ["mweb_url"]=>
  string(117) "https://wx.tenpay.com/cgi-bin/mmpayweb-bin/checkmweb?prepay_id=wx0510462633444064a97c6dc21008915800&package=875200415"
}

第二次请求返回的格式，mweb_url格式都变了唤不起微信支付 并且 出现个沙箱支付金额无效的错误

array(13) {
  ["trade_type"]=>
  string(4) "MWEB"
  ["prepay_id"]=>
  string(22) "wx202****8101644775259"
  ["nonce_str"]=>
  string(13) "5edd**8c18e8a"
  ["return_code"]=>
  string(7) "SUCCESS"
  ["err_code_des"]=>
  string(2) "ok"
  ["sign"]=>
  string(32) "F4C7C75B1ECC646F5****0F1A03222"
  ["mweb_url"]=>
  string(24) "weixin://wxpay/s/An4baqw"
  ["mch_id"]=>
  string(10) "158****061"
  ["return_msg"]=>
  string(2) "OK"
  ["appid"]=>
  string(18) "wx6e080f9dc****98"
  ["device_info"]=>
  string(7) "sandbox"
  ["result_code"]=>
  string(7) "SUCCESS"
  ["err_code"]=>
  string(7) "SUCCESS"
}