PHP: Curl仍然没有返回源码

Question

我现在已经尝试了很多不同的解决方案，但这些卷曲设置都不起作用……我只想把网页的源码拿回来...

是的，我知道有file_get_contents()。但是我需要并且想要使用file_get_contents()的curl实例。错误在哪里？如何使用curl获取网页内容？

$url = "https://google.de";

$curl = curl_init($url);
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "GET");
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
//curl_setopt($curl, CURLOPT_HTTPHEADER, array(
//    "API-Token: " . APITOKEN . "",
//    "API-Secret: " . APISECRET . "",
//));

$response = curl_exec($curl);
echo "This is the response...:\n" . $response;

$response始终为空...即使我将变量保存到文本文件中...这张图片证明了这一点！

Picture

致以问候和感谢！

Answer 1

请转储curl_error($curl)。然后你会得到"SSL certificate problem: unable to get local issuer certificate"。

您只需设置以下选项即可避免此错误：

curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);

警告:上述解决方案禁用了SSL验证，并且不安全。一个安全的解决方案是设置cURL的认证：

curl_setopt ($curl, CURLOPT_CAINFO, "PATH_TO/cacert.pem");

Answer 2

            If you will check error  then you will show below error

        if(!curl_exec($curl)){
          die('Error: "' . curl_error($curl) . '" - Code: ' . curl_errno($curl));
           }

 Error: "SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed" - Code: 60

    To solve this issue you can follow this link-

    https://wehavefaces.net/fixing-ssl-certificate-problem-when-performing-https-requests-in-php-e3b2bb5c58f6