PHP get_headers（）替代方案

问题描述：

我需要一个PHP脚本来读取每个URL请求的HTTP响应代码。

I need a PHP script that reads the HTTP response code for each URL request.

类似

$headers = get_headers($theURL);
return substr($headers[0], 9, 3);

问题是在服务器级别禁用了get_headers（）函数作为策略。所以它没有不行。

The problem is the get_headers() function is disabled at server level, as a policy.So it doesn't work.

问题是如何获取URL的HTTP响应代码？

The question is how to get the HTTP response code for a URL?

答

如果启用了cURL，您可以使用它来获取整个标题或只是响应代码。以下代码将响应代码分配给 $ response_code 变量：

If cURL is enabled, you can use it to get the whole header or just the response code. The following code assigns the response code to the $response_code variable:

$curl = curl_init();
curl_setopt_array( $curl, array(
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_URL => 'http://stackoverflow.com' ) );
curl_exec( $curl );
$response_code = curl_getinfo( $curl, CURLINFO_HTTP_CODE );
curl_close( $curl );

要获得整个标头，您可以发出HEAD请求，如下所示：

To get the whole header you can issue a HEAD request, like this:

$curl = curl_init();
curl_setopt_array( $curl, array(
    CURLOPT_HEADER => true,
    CURLOPT_NOBODY => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_URL => 'http://stackoverflow.com' ) );
$headers = explode( "\n", curl_exec( $curl ) );
curl_close( $curl );

PHP get_headers（）替代方案

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