Question

I’m using this peice of code to try and get all my latest tweets for printing on my site but it’s returning an error about being not authenticated. I’ve created an app in the Dev section and get my consumer and OAuth keys, and added them in the right place in the code.

    <?php
        function buildBaseString($baseURI, $method, $params) {
            $r = array();
        ksort($params);
        foreach($params as $key=>$value){
            $r[] = "$key=" . rawurlencode($value);
        }
        return $method."&" . rawurlencode($baseURI) . '&' . rawurlencode(implode('&', $r));
        }

        function buildAuthorizationHeader($oauth) {
        $r = 'Authorization: OAuth ';
        $values = array();
        foreach($oauth as $key=>$value)
            $values[] = "$key=\"" . rawurlencode($value) . "\"";
        $r .= implode(', ', $values);
        return $r;
        }

        $url = "https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=jameskrawczyk";
        $oauth_access_token = "SECURITY";
        $oauth_access_token_secret = "SECURITY";
        $consumer_key = "SECURITY";
        $consumer_secret = "SECURITY";

        $oauth = array( 'oauth_consumer_key' => $consumer_key,
                    'oauth_nonce' => time(),
                    'oauth_signature_method' => 'HMAC-SHA1',
                    'oauth_token' => $oauth_access_token,
                    'oauth_timestamp' => time(),
                    'oauth_version' => '1.0');



        $base_info = buildBaseString($url, 'GET', $oauth);
        $composite_key = rawurlencode($consumer_secret) . '&' .     rawurlencode($oauth_access_token_secret);
        $oauth_signature = base64_encode(hash_hmac('sha1', $base_info, $composite_key, true));
        $oauth['oauth_signature'] = $oauth_signature;



        $header = array(buildAuthorizationHeader($oauth), 'Expect:');
        $options = array( CURLOPT_HTTPHEADER => $header,
                      //CURLOPT_POSTFIELDS => $postfields,
                      CURLOPT_HEADER => false,
                      CURLOPT_URL => $url,
                      CURLOPT_RETURNTRANSFER => true,
                      CURLOPT_SSL_VERIFYPEER => false);



        $feed = curl_init();
        curl_setopt_array($feed, $options);
        $json = curl_exec($feed);
        curl_close($feed);
        $twitter_data = json_decode($json, true);
        foreach ($twitter_data as $elem)
        {
          print_r($elem);
          echo '<br>';
        }

Error returned on page

Array ( [0] => Array ( [message] => Could not authenticate you [code] => 32 ) ) 

Answer 1

Answer seemed to be that the line

$url = "https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=jameskrawczyk";

should not have the ?screen_name=jameskrawczyk at the end.