(
    [appid] => wx999dde87c915ad99
    [mch_id] => 1559747721
    [nonce_str] => YQuLixBjgqN1onsm
    [sign_type] => MD5
    [notify_url] => https://yudamc.lueasy.com/api/Pay/Pay
    [trade_type] => JSAPI
    [out_trade_no] => 20191029172043766094
    [body] => 门店经营诊断
    [total_fee] => 10
    [openid] => otlcK41p4zH4EKtOtl236XySd5UM
    [spbill_create_ip] => 127.0.0.1
    [sign] => 9FE85AD93DDB341113E2E8662A2358FF
)

Array
(
    [return_code] => FAIL
    [return_msg] => 签名错误
)