Php 如何检查主机是否在线？

当我尝试连接到脱机或不存在的主机时，会出现异常：

cURL error 6: Could not resolve host: somedomain.com

那你怎么用这些东西呢？（）

我需要知道主机是否在线/离线

编辑：

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这对我不起作用，我总是得到：cURL错误6:无法解析主机：somedomain.com

Guzzle HTTP客户端引发了一组异常。 可以从异常中获得响应

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如果您想使用timeout，那么我可以通过使用guzzlehttp进行定向来提供一个选项

use GuzzleHttp\Client;
use GuzzleHttp\Exception\RequestException;


public function checkSiteStatus($host)
{
    define("read_timeout", \GuzzleHttp\RequestOptions::READ_TIMEOUT );
    try {
        $client = new Client();
        $response = $response = $client->get(
                $host, [
                'headers' => [
                    // your headers if any
                ],
                'stream' => true,
                'read_timeout' => 2,
            ]);
        $body = $response->getBody();

       // Returns false on timeout
       $data = $body->read(1024);
       // Returns false on timeout
       $line = fgets($body->detach());
       // you can use $data or $line if they are false means there is timeout.
    } catch (RequestException $e) {
        //Access the message or other type of errors and react to them
    }
}

---

您可以在中阅读更多关于它们的信息。

您有离线主机要测试吗？嗯。实际上，我没有。我将获得域名或ip地址，需要检查服务器是否在线。有时我会得到一个不存在的域名。这能回答你的问题吗？流式处理为true是必需的，它将流式处理响应，而不是预先下载所有响应。@kamilon123s您得到了什么结果？谢谢兄弟，为我工作了

use Illuminate\Support\Facades\Http;
use GuzzleHttp\Exception\RequestException;


public function checkSiteStatus($host)
{
    try {
        return Http::timeout(2)->get($host);
    } catch (RequestException $e) {
        //Access the message or other type of errors and react to them

        if (!$e->hasResponse()) {
            //No response from server. Assume the host is offline or server is overloaded.
            return 'offline';
        }
        
        return 'offline';
    }
}

use GuzzleHttp\Exception\RequestException;

try {
    $client->request('GET', 'https://github.com/_abc_123_404');
} catch (RequestException $e) {
    //Access the message or other type of errors and react to them
    $e->getMessage();
    if (! $e->hasResponse()) {
        //No response from server. Assume the host is offline or server is overloaded.
    }
}

use GuzzleHttp\Client;
use GuzzleHttp\Exception\RequestException;


public function checkSiteStatus($host)
{
    define("read_timeout", \GuzzleHttp\RequestOptions::READ_TIMEOUT );
    try {
        $client = new Client();
        $response = $response = $client->get(
                $host, [
                'headers' => [
                    // your headers if any
                ],
                'stream' => true,
                'read_timeout' => 2,
            ]);
        $body = $response->getBody();

       // Returns false on timeout
       $data = $body->read(1024);
       // Returns false on timeout
       $line = fgets($body->detach());
       // you can use $data or $line if they are false means there is timeout.
    } catch (RequestException $e) {
        //Access the message or other type of errors and react to them
    }
}