使用 curl 的 https 登录 - https login using curl

我正在尝试使用 curl 登录 https://www.investagrams.com/login，它只显示空白页。顺便说一句，我是卷曲的新手，所以请耐心等待。有人可以指出我的代码中的问题吗？

<!DOCTYPE html>
<html>
<body>
<?php
// Create temp file to store cookies
$ckfile = tempnam ("/tmp", "CURLCOOKIE");
// URL to login page
$url = "https://www.investagrams.com/login";
// Get Login page and its cookies and save cookies in the temp file
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // Accepts all CAs
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_COOKIEJAR, $ckfile); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec($ch);
$fields = array(
'ctl00$WelcomePageMainContent$ctl00$Username' => '******',
'ctl00$WelcomePageMainContent$ctl00$Password' => '******',
);
$fields_string = '';
foreach($fields as $key=>$value) {
$fields_string .= $key . '=' . $value . '&';
}
rtrim($fields_string, '&');
// Post login form and follow redirects
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // Accepts all CAs
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, count($fields));
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
curl_setopt($ch, CURLOPT_COOKIEFILE, $ckfile); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); 
$output = curl_exec($ch);

$url = "https://www.investagrams.com/Stock/RealTimeMonitoring";
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // Accepts all CAs
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_COOKIEFILE, $ckfile); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec($ch); 
?>
</body>
</html>

我注意到你的代码有几点错误：

您需要返回第二个 curl 请求的值。
如果您使用 curl 从已经包装在这些标签中的网站中提取信息，则无需声明 DOCTYPE 或使用 <html> 或 <body> 标签。
正如@Terminus您的问题的评论中提到的，您需要在第一个 URL 的末尾包含一个.com。

在这些修订之后，您的代码应为：

<?php
// Create temp file to store cookies
$ckfile = tempnam ("/tmp", "CURLCOOKIE");
// URL to login page
$url = "https://www.investagrams.com/login";
// Get Login page and its cookies and save cookies in the temp file
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true); // Accepts all CAs
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_COOKIEJAR, $ckfile); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec($ch);
$fields = array(
'ctl00$WelcomePageMainContent$ctl00$Username' => '******',
'ctl00$WelcomePageMainContent$ctl00$Password' => '******',
);
$fields_string = '';
foreach($fields as $key=>$value) {
$fields_string .= $key . '=' . $value . '&';
}
rtrim($fields_string, '&');
// Post login form and follow redirects
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true); // Accepts all CAs
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, count($fields));
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
curl_setopt($ch, CURLOPT_COOKIEFILE, $ckfile); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); 
$output = curl_exec($ch);
$url = "https://www.investagrams.com/Stock/RealTimeMonitoring";
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true); // Accepts all CAs
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_COOKIEFILE, $ckfile); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec($ch);
echo $output;
?>

编辑：

正如@Tom下面的评论中所述，除非绝对必要，否则您不应该使用curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);，发生的事情是它不会验证服务器提供的SSL证书，允许模拟任何服务器curl连接到。

此外，由于 https://investagrams.com 具有有效的SSL证书，因此没有理由将CURLOPT_SSL_VERIFYPEER设置为false。