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    apache_response_headers

    (PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

    apache_response_headers — HTTPレスポンスヘッダを全て取得する

    説明

    apache_response_headers(): array|false

    全てのApacheレスポンスヘッダを配列として取得します。 Apache, FastCGI, CLI, FPM ウェブサーバーで動作します。

    パラメータ

    この関数にはパラメータはありません。

    戻り値

    全てのApacheレスポンスヘッダの配列、失敗した場合に false を返します。

    例

    例1 apache_response_headers() の例

    <?php
    print_r    (apache_response_headers());
    ?>

    上の例の出力は、 たとえば以下のようになります。

    Array
(
    [Accept-Ranges] => bytes
    [X-Powered-By] => PHP/4.3.8
)

    参考

    • apache_request_headers() - すべての HTTP リクエストヘッダを取得する
    • headers_sent() - ヘッダが既に送信されているかどうかを調べる
    • headers_list() - 送信した (もしくは送信される予定の) レスポンスヘッダの一覧を返す

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    User Contributed Notes 6 notes

    up
    3
    Isaac Z dot Schlueter i at foohack dot com
    15 years ago
    This function doesn't exist on lighttpd, so I wrote this little function to emulate it:

    <?php

    if (!function_exists('apache_response_headers')) {
    function     apache_response_headers () {
    $arh = array();
    $headers = headers_list();
    foreach (    $headers as $header) {
    $header = explode(":", $header);
    $arh[array_shift($header)] = trim(implode(":", $header));
    }
    return     $arh;
    }
    }

    ?>
    up
    2
    php at mailplus dot pl
    13 years ago
    I get "Call to undefined function apache_response_headers()" when using php-cli so be aware of lack of this function CLI.
    In my case I was trying to test my app via phpunit (command line tool of course ;)) if it sends proper headers.
    up
    1
    orange
    19 years ago
    If apache_response_headers() returns an empty array, try calling flush() before and it'll get filled.
    up
    -1
    athlet
    18 years ago
    For apache_response_headers() working good, you need to set up output_buffering = Off in php.ini
    up
    -2
    Daniel Lorch
    17 years ago
    Addendum: The code

    <pre>
    <?php
    print_r    (apache_request_headers());
    ?>
    </pre>

    gives me

    Array
    (
    [X-Powered-By] => PHP/5.1.6
    )

    But the code
    <pre>
    <?php
    ob_end_flush    ();
    print_r(apache_request_headers());
    ?>
    </pre>

    Results in

    Array
    (
    [Content-Location] => phpinfo.de.php
    [Vary] => negotiate
    [TCN] => choice
    [X-Powered-By] => PHP/5.1.6
    [Keep-Alive] => timeout=15, max=96
    [Connection] => Keep-Alive
    [Transfer-Encoding] => chunked
    [Content-Type] => text/html
    [Content-Language] => de
    )
    up
    -2
    Daniel Lorch
    17 years ago
    I can confirm athlet's experience with apache_response_headers() using PHP 5.1.6. When the resulting array is empty or only contains "X-Powered-By" instead of the full list of values, you'll need to switch off output_buffering _before_ the script has been executed, for example with the following directive in .htaccess:

    php_value "output_buffering" "0"

    it _doesn't_ work when you do a you ini_set('output_buffering', 0); in your script. Not sure why that is so - it is not a bug in PHP, but probably has to do with how Apache populates the request values.
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