Question

我已经向REST API发出了oauth签名请求，并将响应头放在数组中，如下所示：

[0] => HTTP/1.1 200 OK
[1] => Cache-Control: private
[2] => Transfer-Encoding: chunked
[3] => Content-Type: text/html; charset=utf-8
[4] => Content-Location: https://***
[5] => Server: Microsoft-IIS/7.0
[6] => Set-Cookie: ASP.NET_SessionId=***; path=/; HttpOnly
[7] => X-AspNetMvc-Version: 2.0
[8] => oauth_token: ***
[9] => oauth_token_secret: ***
[10] => X-AspNet-Version: 4.0.30319
[11] => X-Powered-By: ASP.NET
[12] => Date: Sat, 15 Sep 2012 02:01:15 GMT

我正在试图弄清楚如何解析标题以便轻松检索诸如HTTP状态代码，Content-Location，oauth_token和oauth_token_secret之类的项目？

Answer 1

似乎唯一带有:的标头是HTTP版本和状态。做一个array_shift来提取它，迭代通过其他人创建一个这样的数组：

$parsedHeaders = array();
foreach ($headers as $header) {
    if (! preg_match('/^([^:]+):(.*)$/', $header, $output)) continue;
    $parsedArray[$output[1]] = $output[2];
}

ps：未经测试。

- 编辑 -

享受;）

/**
 * Parse a set of HTTP headers
 *
 * @param array The php headers to be parsed
 * @param [string] The name of the header to be retrieved
 * @return A header value if a header is passed;
 *         An array with all the headers otherwise
 */
function parseHeaders(array $headers, $header = null)
{
    $output = array();

    if ('HTTP' === substr($headers[0], 0, 4)) {
        list(, $output['status'], $output['status_text']) = explode(' ', $headers[0]);
        unset($headers[0]);
    }

    foreach ($headers as $v) {
        $h = preg_split('/:\s*/', $v);
        $output[strtolower($h[0])] = $h[1];
    }

    if (null !== $header) {
        if (isset($output[strtolower($header)])) {
            return $output[strtolower($header)];
        }

        return;
    }

    return $output;
}

Answer 2

您需要迭代数组并检查stripos()以找到您要查找的标头。在大多数情况下，然后在explode()上:（限制为2个结果部分），但HTTP响应代码将要求您在空格上爆炸。

// Get any header except the HTTP response...
function getResponseHeader($header, $response) {
  foreach ($response as $key => $r) {
     // Match the header name up to ':', compare lower case
     if (stripos($r, $header . ':') === 0) {
        list($headername, $headervalue) = explode(":", $r, 2);
        return trim($headervalue);
     }
  }
}
// example:
echo getResponseHeader("Content-Type");
// text/html; charset=utf-8

// Get the HTTP response code
foreach ($response as $key => $r) {
  if (stripos($r, 'HTTP/1.1') === 0) {
    list(,$code, $status) = explode(' ', $r, 3);
    echo "Code: $code, Status: $status";
    break;
  }
}

Answer 3

如果您有pecl_http：http://php.net/manual/it/function.explode.php

，请简短回答

答案稍长：

$header = "...";
$parsed = array_map(function($x) { return array_map("trim", explode(":", $x, 2)); }, array_filter(array_map("trim", explode("\n", $header))));

Answer 4

看起来你正在使用get_headers函数，如果是这样，请使用this函数的第二个参数替换输出数组键的数值，并用字符串键替换它们，查看{{ 3}}用于get_headers函数。

一个小例子是：

<?php
    $output = get_headers('http://google.com', 1);
    print_r($output);

将生成类似以下数组的内容：

Array
(
    [0] => HTTP/1.0 301 Moved Permanently
    [Location] => http://www.google.com/
    [Content-Type] => Array
        (
            [0] => text/html; charset=UTF-8
            [1] => text/html; charset=ISO-8859-1
        )

    [Date] => Array
        (
            [0] => Tue, 24 Sep 2013 11:57:10 GMT
            [1] => Tue, 24 Sep 2013 11:57:11 GMT
        )

    [Expires] => Array
        (
            [0] => Thu, 24 Oct 2013 11:57:10 GMT
            [1] => -1
        )

    [Cache-Control] => Array
        (
            [0] => public, max-age=2592000
            [1] => private, max-age=0
        )

    [Server] => Array
        (
            [0] => gws
            [1] => gws
        )

    [Content-Length] => 219
    [X-XSS-Protection] => Array
        (
            [0] => 1; mode=block
            [1] => 1; mode=block
        )

    [X-Frame-Options] => Array
        (
            [0] => SAMEORIGIN
            [1] => SAMEORIGIN
        )

    [Alternate-Protocol] => Array
        (
            [0] => 80:quic
            [1] => 80:quic
        )

    [1] => HTTP/1.0 200 OK
    [Set-Cookie] => Array
        (
            [0] => PREF=ID=58c8f706594fae17:FF=0:TM=1380023831:LM=1380023831:S=_ehOnNWODZqIarXn; expires=Thu, 24-Sep-2015 11:57:11 GMT; path=/; domain=.google.com
            [1] => NID=67=L85IlJW5yG4l9Suyf1LwKMUTcVHyGv4u9tuuMlBH4pfT1syOJvspcgRJ9uTde1xLTDhI2QcOG_fuJY3sfhw49mayT5WdMHnGeMyhh3SgFTRYVF0RAtBXXmjyDFzMqPKu; expires=Wed, 26-Mar-2014 11:57:11 GMT; path=/; domain=.google.com; HttpOnly
        )

    [P3P] => CP="This is not a P3P policy! See http://www.google.com/support/accounts/bin/answer.py?hl=en&answer=151657 for more info."
)

Answer 5

我最终得到了这个解决方案，该解决方案使用正则表达式在标头中查找所有键和值，并结合来自flask_cors的一些数组突变，以将正则表达式匹配项放入关联数组中。这不是100％适用于此处提出的问题，因为它接受了一个字符串，但是连接字符串数组以获取单个字符串将是对此的先驱。我的案子必须处理原始标头，因此是这种解决方案。

preg_match_all('/^([^:\n]*): ?(.*)$/m', $header, $headers, PREG_SET_ORDER);
$headers = array_merge(...array_map(function ($set) {
    return array($set[1] => trim($set[2]));
}, $headers));

这将产生标题的关联数组。如果标头的第一行作为输入（例如GET / HTTP/1.1），则将其忽略作为输出。

Answer 6

如果要更加安全，请使用Symfony HTTP Foundation：

composer require symfony/http-foundation

use Symfony\Component\HttpFoundation\Request;

$request = Request::createFromGlobals();

// retrieves an HTTP request header, with normalized, lowercase keys
$request->headers->get('host');
$request->headers->get('content-type');

如果您不希望有这种依赖关系，下面是一个示例，我将其汇总为一个示例，以了解Cache-Control标头是否具有no-cache值，例如：

/**
*  [
*    0 => 'Cache-Control: no-cache, no-store, no-validate',
*    1 => 'User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20100101 Firefox/12.0',
*  ]
*/
$headers = headers_list();

foreach ( $headers as $header_string ) {
     /*
     * Regex Samples:
     * "Foo: Bar"
     * "Foo-Bar: Baz-Bar:1"
     *
     * Matches:
     * "Foo"
     * "Foo-Bar"
     */
    preg_match( '#^.+?(?=:)#', $header_string, $key );

    if ( empty( $key ) ) {
        continue;
    }

    $key   = strtolower( reset( $key ) );
    $value = strtolower( ltrim( strtolower( $header_string ), $key . ':' ) );

    if ( $key == 'cache-control' ) {
        if ( strpos( $value, 'no-cache' ) !== false || strpos( $value, 'no-store' ) !== false ) {
            $nocache = true;
        }
    }
}

如何在PHP中解析响应头？

6 个答案: