使用curl登录网站

Question

我尝试使用curl登录。 这是我尝试远程登录的Web登录表单。

 <form id="frmNIDLogin" name="frmNIDLogin" target="_top" autocomplete="off" action="https://nid.naver.com/nidlogin.login" method="post" onsubmit="return confirmSubmit();">
            <input type="hidden" name="enctp" id="enctp" value="1">
            <input type="hidden" name="encpw" id="encpw" value="">
            <input type="hidden" name="encnm" id="encnm" value="">
            <input type="hidden" name="svctype" id="svctype" value="">
            <input type="hidden" name="svc" id="svc" value="">
            <input type="hidden" name="viewtype" id="viewtype" value="">
            <input type="hidden" name="locale" id="locale" value="ko_KR">
            <input type="hidden" name="postDataKey" id="postDataKey" value="">
            <input type="hidden" name="smart_LEVEL" id="smart_LEVEL" value="-1">
            <input type="hidden" name="logintp" id="logintp" value="">
            <input type="hidden" name="url" id="url" value="http://www.naver.com">
            <input type="hidden" name="localechange" id="localechange" value="">
            <input type="hidden" name="theme_mode" id="theme_mode" value="">
            <input type="hidden" name="pre_id" id="pre_id" value="">
            <input type="hidden" name="resp" id="resp" value="">
            <input type="hidden" name="exp" id="exp" value="">
            <input type="hidden" name="ru" id="ru" value="">
            <fieldset class="login_form">

这是我试过的代码...... 如何将数据发送到原始的login_check php？（https://nid.naver.com/nidlogin.login）

<?php
$id = $_POST[id];
$pw = $_POST[pw];
$ch = curl_init();
curl_setopt ($ch, CURLOPT_URL,"https://nid.naver.com/nidlogin.login"); 
curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, FALSE); 
 curl_setopt ($ch, CURLOPT_SSLVERSION,3); 
curl_setopt ($ch, CURLOPT_HEADER, 0); 
curl_setopt ($ch, CURLOPT_POST, 1); 
curl_setopt($ch, CURLOPT_POSTFIELDS,'id='.urlencode($id).'&pw='.urlencode($pw));
curl_setopt ($ch, CURLOPT_TIMEOUT, 30); 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
$result = curl_exec ($ch);
curl_close ($ch);
echo $result;
echo $page;
?>