php post请求方法，不用curl方法的解决办法

/**
 * file_get_contents方法 请求
 * @param string $url 接口url
 * @param string $post_data 接口参数
 * @return   string
 */
if (!function_exists('send_post')) {
    function send_post($url, $post_data)
    {
        $postdata = http_build_query($post_data);
        $options = array(
            'http' => array(
                'method' => 'POST',
                'header' => 'Content-type:application/x-www-form-urlencoded',
                'content' => $postdata,
                'timeout' => 15 * 60 // 超时时间（单位:s）
            )
        );
        $context = stream_context_create($options);
        $result = @file_get_contents($url, false, $context);
        return $result;
    }
}

　　调用实例

  $data = array(
            "mobile" => $orderData['phone'],
            'pay_price' => $orderData['orderAmount'],
            'send_price' => 0,
            'id' => 0,
            'mall_id' => $merchantInfo['xiaowei_id'],
        );
        $url = 'https://xiaowei23.shop.test/web/index.php?_mall_id='.$merchantInfo['xiaowei_id'].'&r=api/open/balance-recharge';
        $res = send_post($url,$data);
        // dd($res);
        $res = json_decode($res,true);