private function prepare_oauth_signature() {
    $this->request_settings['oauth1_params']['oauth_signature'] = $this->safe_encode(
      base64_encode(
        hash_hmac(
          'sha1', $this->request_settings['basestring'], $this->request_settings['signing_key'], true
    )));
  }
private function prepare_oauth_signature() {
    $this->request_settings['oauth1_params']['oauth_signature'] = $this->safe_encode(
      base64_encode(
        hash_hmac(
          'sha1', $this->request_settings['basestring'], $this->request_settings['signing_key'], true
    )));
  }
private function prepare_oauth_signature ( ) { $ this -> request_settings [ 'oauth1_params' ] [ 'oauth_signature' ] = $ this -> safe_encode ( base64_encode ( hash_hmac ( 'sha1' , $ this -> request_settings [ 'basestring' ] , $ this -> request_settings [ 'signing_key' ] , true ) ) ) ; }
Signs the OAuth 1 request

@return void oauth_signature is added to the parameters in the class array variable '$this->request_settings'
Signs the OAuth 1 request