header('content-type:text/html;charset=utf-8');
function curlPost($url,$data,$method){
    $ch = curl_init();   //1.初始化
    curl_setopt($ch, CURLOPT_URL, $url); //2.请求地址
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);//3.请求方式
    //4.参数如下
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);//https
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');//模拟浏览器
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
        curl_setopt($ch, CURLOPT_HTTPHEADER,array('Accept-Encoding: gzip, deflate'));//gzip解压内容
        curl_setopt($ch, CURLOPT_ENCODING, 'gzip,deflate');

    if($method=="POST"){//5.post方式的时候添加数据
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    }
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $tmpInfo = curl_exec($ch);//6.执行

    if (curl_errno($ch)) {//7.如果出错
        return curl_error($ch);
    }
    curl_close($ch);//8.关闭
    return $tmpInfo;
}
$data=array('name' => '1234');
$url="http://www.sohu.com/";

$method="GET";
$file=curlPost($url,$data,$method);
$file=mb_convert_encoding($file,'UTF-8','GBK');
echo $file;

当cookie认证登陆的时候

<?php
    $cookie_file = tempnam('./temp','cookie');
    function weixinPost($url,$data,$method,$setcooke=false,$cookie_file=false){
        $ch = curl_init();   //1.初始化
        curl_setopt($ch, CURLOPT_URL, $url); //2.请求地址
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);//3.请求方式
        //4.参数如下
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
        curl_setopt($ch, CURLOPT_AUTOREFERER, 1);

        if($method=="POST"){//5.post方式的时候添加数据
            curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        }
        if($setcooke==true){
            curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file);
        }else{
            curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file);
        }
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $tmpInfo = curl_exec($ch);//6.执行

        if (curl_errno($ch)) {//7.如果出错
            return curl_error($ch);
        }
        curl_close($ch);//8.关闭
        return $tmpInfo;
    }
    $data=array('username' => '***','password'=>'***');
    $url="http://www.xinxinj.com/login.php";
    $method="POST";
    $file=weixinPost($url,$data,$method,true,$cookie_file);
    echo $file;

    $url="http://www.xinxinj.com/admin.php";
    $method="GET";
    $file=weixinPost($url,$data,$method,false,$cookie_file);
    echo $file;

?>