if curl getinfo for HTTP CODE is not returning a code?

Question

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);

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.

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

Thanks, Tanmay

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

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.

Thanks again.

---------------------- 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?

Thanks again, Tanmay

Answer 1

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