php curl登錄問題（空白頁）

Question

更新：現在我可以訪問主頁了，但是我沒有登錄。

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://www.xxx.com/?cmd=home');
curl_setopt ($ch, CURLOPT_POST, 1);
curl_setopt ($ch, CURLOPT_POSTFIELDS, 'emailAddress=jeffanderson@tradermail.info&persist=on&pswd=qweqwe&from=/?cmd=home');
curl_setopt ($ch, CURLOPT_COOKIEJAR, 'cookie.txt');
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
$content = curl_exec ($ch);
curl_close ($ch);

echo $content;

Answer 1

添加curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1); 。

Answer 2

如果存在問題， curl_exec()返回false：

$content = curl_exec($ch);
if ($content === FALSE) {
      die(curl_error($ch));
}
return($content);

Answer 3

您需要做兩件事。 首先，將以下兩個選項添加到CURL：

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_MAXREDIRS, 3);

這將告訴CURL遵循任何重定向。 然后，更改回顯。 Echo會將數據發送到瀏覽器。 然后，您都准備好了！

Answer 4

畢竟是光榮的回答。

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://www.xxx.com/?cmd=sb-login&from=/?cmd=home');
curl_setopt ($ch, CURLOPT_POST, 1);
curl_setopt ($ch, CURLOPT_POSTFIELDS, 'emailAddress=xxx@tradermail.info&persist=on&pswd=xxx&from=/?cmd=home');
curl_setopt ($ch, CURLOPT_COOKIEJAR, 'cookie.txt');
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt ($ch, CURLOPT_MAXREDIRS, 10);
$content = curl_exec($ch);
if (FALSE===$content  {
      echo "Follwowing error:".curl_error();
      die(curl_errorno($ch));
}
curl_close ($ch);
return($content);