如何使用PHP cURL获取最后的重定向页面内容？

Question

我正在尝试获取网址的内容。确切的网址是动态的，但我有网址重定向到数据的最终网址。当我在浏览器中输入此URL时，一切都很好，但是当下面的curl配置没有获得任何数据时。我还能尝试什么？谢谢！

// custom curl to get page content of last redirect
function getCurlContent($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
    curl_setopt($ch, CURLOPT_HEADER, TRUE);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
if ($content===FALSE)
    echo curl_error($ch);
    $content = curl_exec($ch);
    curl_close($ch);
    return $content;
}

回声输出：

SSL certificate problem: self signed certificate in certificate chainSSL certificate problem: unable to get local issuer certificateSSL certificate problem: self signed certificate in certificate chain