使用PHP版的SDK，没处理好，发现有个test/TestImage.php的测试文件，开始改，发现状态码$request -> getCode()一直为0，一路调试上去，发现是getContents函数里curl错误！输出curl_errno($ch),SSL certificate problem: unable to get local issuer certificate 使用解决方法是证书问题。

错误代码 invalid-method 错误原因: 不存在的方法名 一直未解决，可能是$request应该是文档中的AlipayCommerceCityfacilitatorVoucherGenerateRequest类实例还是测试文件中的$alipayClient -> getContents() 返回值（AlipayMobilePublicMultiMediaExecute实例）还有Warning: openssl_sign(): supplied key param cannot be coerced into a private key in... 好多问题，又回头看API发现页面API下有示例代码，哟吼吼吼。

配置好之后有错误{"code":"40006","msg":"Insufficient Permissions","sub_code":"isv.insufficient-isv-permissions","sub_msg":"ISV权限不足"}

换了沙箱账号，提醒另外一个错误{"code":"40004","msg":"Business Failed","sub_code":"unknown-sub-code","sub_msg":"未知的错误码"}，但都是验签函数checkResponseSign()内出错。

object(SignData)[5]
  public 'signSourceData' => string '{"code":"40004","msg":"Business Failed","sub_code":"unknown-sub-code","sub_msg":"未知的错误码"}' (length=101)
  public 'sign' => string 'EfXcLt1HDYQFHnfJRy31/S9+AeCd7J4jw/Zrphi2ImHgCIBGIbyZ8+Ch2yoiGeKN/tqdTPSEOosEI9QF1Nx53fHKHZG1SkrodwVzSSdkVPM9pxCszCn4u0ktTi925BazTFfNoq****JTHflEJ91GOhX19sbFYSnvD6RWus4YeFo=' (length=172)

 追溯curl函数，url=https://openapi.alipaydev.com/gateway.do?app_id=2016091000478468&version=1.0&format=json&sign_type=RSA&method=alipay.commerce.cityfacilitator.station.query×tamp=2016-10-27+08%3A31%3A05&auth_token=&alipay_sdk=alipay-sdk-php-20160411&terminal_type=&terminal_info=&prod_code=¬ify_url=&charset=UTF-8&app_auth_token=&sign=T2xEACiz6ET%2FHs5DWdBZqrQQlB8nB8iw4%2F4VlEtqG6qVePjEop9IgLpgLt%2BOtDCJgbWYA%2FIlzyHXBRs9D1JYfT1wUHzYoXXATcXNm0rssfFLB********xdLHMn4DCF%2B4QQLLeZrBVV2nj7Kxo1Zz1zv5ElS%2FLialsFA%3D

上面加重的【×tamp=】很疑惑啊，×怎么可以在里面，前面应该query就结束了然后应该是时间参数&timestamp这个啊，改成&timestamp=就至少可以返回了而不是这个错误：错误代码 invalid-method 错误原因: 不存在的方法名 了。看看哪里构造url出错的。

array (size=15)
  'app_id' => string '2016091000478468' (length=16)
  'version' => string '1.0' (length=3)
  'format' => string 'json' (length=4)
  'sign_type' => string 'RSA' (length=3)
  'method' => string 'alipay.commerce.cityfacilitator.station.query' (length=45)
  'timestamp' => string '2016-10-27 08:48:32' (length=19)
  'auth_token' => null
  'alipay_sdk' => string 'alipay-sdk-php-20160411' (length=23)
  'terminal_type' => null
  'terminal_info' => null
  'prod_code' => null
  'notify_url' => null
  'charset' => string 'UTF-8' (length=5)
  'app_auth_token' => null
  'sign' => string 'f6ufUiSHCb7LNaXJvTdPEdDzfxKgepILJiKaM3wqueGojpOTZrVFRhVFqAQAxCEze9bVX77fpS/bvT8IVoD+/DMikZrje8SqkrSQvIHG8r1VhucgWplpgJU7HzViE*****************/MoG5OqfPf+H+rU+Eui7+bfYXtTDY=' (length=172)

可以看出来确实应该是timestamp，&times的html转义字符就是×,所以 echo "&timestamp=";会输出×tamp这种幺蛾子。

foreach ($sysParams as $sysParamKey => $sysParamVal