Twitter API Issue: OAuth Request Token using GET works, POST fails -

I am using the Twitter API for OAuth.

I received a token operation to work without any problems using GET.

However, when I do the same thing using POST, I get the 'Failed to validate the Oath sign' error.

I'm using different curl options here:

  curl_setopt ($ ch, CURLOPT_URL, ''. $ Url_post_str. ''); Curl_setopt ($ CH, CURLOPT_POST, 1); Curl_setopt ($ CH, CURLOPT_POSTFIELDS, $ post_vars_arr); Curl_setopt ($ CH, CURLOPT_HEADER, 0); Curl_setopt ($ CH, CURLOPT_FOLLOWLOCATION, 1); Curl_setopt ($ CH, CURLOPT_MAXREDIRS, 10); Curl_setopt ($ CH, CURLOPT_RETURNTRANSFER, 1); Curl_setopt ($ ch, CURLOPT_HTTPHEADER, array ('expected:'));  

Can you help?

Thank you

I thought it a while later

It is revealed that because I was using an array for the post field i.e.

  curl_setopt ($ ch, CURLOPT_POSTFIELDS, ** $ post_vars_arr **) ;  

The content type of the form was multiple / form-data, which is not supported by the Twitter OAuth API.

So pass this array to a query-string and the same curl_setopt i.e.

  curl_setopt ($ ch, CURLOPT_POSTFIELDS, ** $ post_vars_str **);  

I understand that when you use a query string instead of an array, the form content type will be application / x-www-form-urlencoded (Which is supported by the Twitter API) and not multipart / form-data .

And in the same way I got this job. I hope it helps someone else.