php中curl返回false该如何解决？（示例讲解）

function request_post($url = '', $param = '') {
    if (empty($url) || empty($param)) {
        return false;
    }
    $postUrl = $url;
    $curlPost = $param;
    $curl = curl_init();//初始化curl
    curl_setopt($curl, CURLOPT_URL,$postUrl);//抓取指定网页
    curl_setopt($curl, CURLOPT_HEADER, 0);//设置header
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);//要求结果为字符串且输出到屏幕上
    curl_setopt($curl, CURLOPT_POST, 1);//post提交方式
    curl_setopt($curl, CURLOPT_POSTFIELDS, $curlPost);//提交的参数
    $data = curl_exec($curl);//运行curl
    curl_close($curl);
    
    return $data;
}

curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);

string(39) "Problem (2) in the Chunked-Encoded data" bool(false)

//CURL_HTTP_VERSION_1_0 (强制使用 HTTP/1.0)
//CURL_HTTP_VERSION_1_1 (强制使用 HTTP/1.1)。
curl_setopt($curlp, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);