eg.php

$oauth = new OAuthSimple($this->context->requestValidator->ConsumerKey, $this->context->requestValidator->ConsumerSecret);

$sign = $oauth->sign(array(
						"action" => $OauthMethod,
						"path" => $base,
						"parameters" => $query,
						"signatures" => array(
								"oauth_consumer_key" => $this->context->requestValidator->ConsumerKey,
								"oauth_consumer_secret" => $this->context->requestValidator->ConsumerSecret,
								"oauth_token" => $this->context->requestValidator->AccessToken,
								"oauth_secret" => $this->context->requestValidator->AccessTokenSecret,
						)
				));
				
$httpHeaders['authorization'] = "Authorization: " . $sign['header'];

...
...
$ch = curl_init($sign['signed_url']);

switch($OauthMethod)
{
    case 'POST':
      ...
      break;
    case 'GET':
      ...
      break;
}

$response = curl_exec($ch);