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I am trying to use an API offered by a website in PHP however I am facing problems. I can use the API very fine in C#. The following code in C3 works:

string result = wb.UploadString(apiurl, "POST", "Hello, where do you live");

The above code works perfectly find. But I want to make the same code in PHP. In PHP I am utilizing HTTP POST from PHP without CURL , I have tried with CURL as well but it just doesn't work, I do not get anything returned from the API.

The following is the PHP code:

function do_post_request($url, $data, $optional_headers = null)
    $params = array('http' => array('method' => 'POST','content' => $data));

    if ($optional_headers !== null) 
        $params['http']['header'] = $optional_headers;
    $ctx = stream_context_create($params);
    echo $ctx['content'];
    $fp = @fopen($url, 'rb', false, $ctx);          
    if (!$fp) 
        throw new Exception("Problem with $url, $php_errormsg");
    $response = @stream_get_contents($fp);          
    if ($response === false) 
        throw new Exception("Problem reading data from $url, $php_errormsg");
    return $response;

$result = do_post_request($apiurl,$txtstr);
echo $result;

I get no result, Neither do I get any error.

The API has strict condition that:
you should put your content as the POST DATA, and don’t write any other content or parameters in the POST DATA

Any one have any idea and can help me?


1 solution

Get Wireshark on the job. Record the messages exchanged with your C# code (that works), and do the same with your PHP (that doesn't). Find out what's different, then work from there. My wild guess is a missing header in the request. Oh, and read the PHP Manual carefully.

Share this answer
dahacked1 16-Aug-11 10:43am    
Thanks, Your suggestion indirectly solved the problem. I ran Wireshark on c# and then to check php on my own PC I installed webserver on my PC and I saw the script worked perfectly fine. I have been wasting my time useless for the whole day.

I guess the API ports are blocked on my hosting company, Have emailed them.


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