用于中文的get和post请求的函数

function http_get($url,$header=array("Content-Type: text/xml;charset=utf-8"))
{
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, 60);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        $ret = curl_exec($ch);
        curl_close($ch);
        return $ret;
}

function http_post($url,$params,$xml_post = true)
{
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, 60);
        curl_setopt($ch, CURLOPT_POST, 1);
        if($xml_post) curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: text/xml"));
        curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
        $ret = curl_exec($ch);
        curl_close($ch);
        return $ret;
}