如果curl getinfo为HTTP CODE不返回代码？ [英] if curl getinfo for HTTP CODE is not returning a code?

问题描述

我正在对web服务进行正常的curl调用，并通过

I am doing a normal curl call to a webservice and I grab the return HTTP code through

$code = curl_getinfo ($ch, CURLINFO_HTTP_CODE);

它返回$ code为200 - 这是好的。
但是记录curl调用现在从一个星期，那里几乎没有调用到同一个webservice没有返回任何东西！所以基本上我得到$代码为空白。

It does return me $code as 200 - which is good. But logging the curl calls now from a week, there where few calls to the same webservice which didn't return anything! so basically I am getting $code as blank.

有人可以告诉我什么应该在这些情况下出现错误，如果可以调试它更多！

Can someone tell me what should be going wrong under those scenarios, and if can debug it more!?

感谢，
Tanmay

Thanks, Tanmay

------------- ----------更新-------------------------

-----------------------Update-------------------------

感谢大家的信息。是的，我也在想，一样，它没有达到服务器。我将更新我的代码，以获得curl_error&&

Thanks everyone for the info. Yes I was also thinking the same, its not reaching the server. I will update my code with to get curl_error && curl_errno and will update you guys soon.

再次感谢。

--------- ------------- Update 2 ----------------------------------- ----------------------
我没有更新我的代码，返回我的错误没有7 - 无法连接到主机。
我没有记录所有的curl调用，所以基本上约90-98％的curl调用执行良好。但只有1-2％的curl调用不能找到主机！任何人都可以告诉我什么可能是原因？

---------------------- Update 2--------------------------------------------------------- I did update my code to return me the error no 7 - couldn't connect to host. I did logged all the curl calls, so basically around 90-98% of curl calls are executing good. But only 1-2% of curl calls are not able to find the host! Can anyone tell me what could be the reason? and How I can prevent it?

推荐答案

再次感谢
Tanmay

解决方案

如果cURL HTTP代码没有返回任何东西（也就是0），这意味着cURL操作由于某种原因失败。捕获您的日志中的 curl_error 将是有益的，以及它可能会给你更多的洞察在这些情况下发生（如果他们再次发生）。

If the cURL HTTP code returned nothing (aka '0'), that means the cURL operation failed for some reason. It would be beneficial to capture the curl_error in your logs as well as it might give you more insight to was happened in those cases (if they happen again).

PHP：curl_error

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