src/Consumer.php
public function getAuthorizationHeader(Url $url, $consumerKey, $consumerSecret, $token, $tokenSecret, $method = 'HMAC-SHA1', $requestMethod = 'GET', array $post = array())
    {
        $values = array(
            'oauth_consumer_key'     => $consumerKey,
            'oauth_token'            => $token,
            'oauth_signature_method' => $method,
            'oauth_timestamp'        => self::getTimestamp(),
            'oauth_nonce'            => self::getNonce(),
            'oauth_version'          => self::getVersion(),
        );

        // build the base string
        $params = array_merge($values, $url->getParameters());

        if ($requestMethod == 'POST' && !empty($post)) {
            $params = array_merge($params, $post);
        }

        $baseString = self::buildBasestring($requestMethod, $url, $params);

        // get the signature object
        $signature = self::getSignature($method);

        // generate the signature
        $values['oauth_signature'] = $signature->build($baseString, $consumerSecret, $tokenSecret);

        // build request
        $authorizationHeader = 'OAuth realm="psx", ' . self::buildAuthString($values);

        return $authorizationHeader;
    }
public function getAuthorizationHeader(Url $url, $consumerKey, $consumerSecret, $token, $tokenSecret, $method = 'HMAC-SHA1', $requestMethod = 'GET', array $post = array())
    {
        $values = array(
            'oauth_consumer_key'     => $consumerKey,
            'oauth_token'            => $token,
            'oauth_signature_method' => $method,
            'oauth_timestamp'        => self::getTimestamp(),
            'oauth_nonce'            => self::getNonce(),
            'oauth_version'          => self::getVersion(),
        );

        // build the base string
        $params = array_merge($values, $url->getParameters());

        if ($requestMethod == 'POST' && !empty($post)) {
            $params = array_merge($params, $post);
        }

        $baseString = self::buildBasestring($requestMethod, $url, $params);

        // get the signature object
        $signature = self::getSignature($method);

        // generate the signature
        $values['oauth_signature'] = $signature->build($baseString, $consumerSecret, $tokenSecret);

        // build request
        $authorizationHeader = 'OAuth realm="psx", ' . self::buildAuthString($values);

        return $authorizationHeader;
    }
If you have established a token and token secret you can use this method
to get the authorization header. You can add the header to an http
request to make an valid oauth request i.e.
<code>
$header = array(
'Authorization: ' . $oauth->getAuthorizationHeader(...),
);
</code>

@param \PSX\Uri\Url $url
@param string $consumerKey
@param string $consumerSecret
@param string $token
@param string $tokenSecret
@param string $method
@param string $requestMethod
@param array $post
@return string