public function call($api, $param = '', $method = 'POST')
{
/* 人人网调用公共参数 */
$params = ['method' => $api, 'access_token' => $this->token['access_token'], 'v' => '1.0', 'format' => 'json'];
$data = $this->http($this->url(''), $this->param($params, $param), $method);
return json_decode($data, true);
}