我正在尝试从festivalnet中删除事件列表数据。只能在登录后检索。我在使用Curl的PHP中尝试它。但是无法登录festivalnet页面，我正在使用curl发布参数。
//username and password of account
$login_username = 'abcd';
$password = 'xxxx';
//login form action url
$form_url="https://festivalnet.com/cgi-bin/festbiz2/db.cgi";
$postinfo = "userid=".$login_username."&pw=".$password.'&db=festbiz&login=1';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $form_url);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postinfo);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
echo curl_exec($ch);
请帮忙。