【PHP开发】用curl向https发请求时的35号错误

放了个假发现以前写的程序的模拟登陆不管用了，中间输出，发现curl向https发请求时没有返回数据，输出错误信息，得到：

curl_errno($ch) -----> 35
curl_error($ch) -----> error:14077458:SSL routines:SSL23_GET_SERVER_HELLO:reason(1112)

查了很多资料，终于发现要强行指定SSL的版本，即加上下面的话就可以了：

curl_setopt($ch, CURLOPT_SSLVERSION, 3);

整个函数也贴下来供参考：

function sendPostHttps($url, $postData, $header=0, $referer=""){
    $ch = curl_init () ;    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_HEADER, $header);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_URL, $url) ;
    curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
    curl_setopt($ch, CURLOPT_REFERER, $referer);
    curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 1);
    curl_setopt($ch, CURLOPT_SSLVERSION, 3);
    $result = curl_exec($ch);
    curl_close($ch);    return $result;
}

参考帖子：http://stackoverflow.com/questions/20988782/curl-unknown-ssl-protocol-error-in-connection-error-in-server-but-works-on-lo