Req #44744 [Com]: apache_response_headers() does not include duplicate headers

Edit report at https://bugs.php.net/bug.php?id=44744&edit=1 ID: 44744 Comment by: cweiske@php.net Reported by: chsc at peytz dot dk Summary: apache_response_headers() does not include duplicate headers Status: Open Type: Feature/Change Request Package: Apache2 related Operating System: Linux PHP Version: 5.2.5 Block user comment: N Private report: N New Comment: PHP 7.3 with Apache 2.4 (mod_php) does not exhibit this behavior: Duplicate headers get merged into one ("X: Foo" and "X: Bar" appear in PHP as "X: Foo, Bar"). The problem still occurs with nginx/php-fpm, but that's a different problem. Previous Comments: ------------------------------------------------------------------------ [2012-09-09 12:13:10] space at wechall dot net Also in PHP 5.3.10… i will test it on PHP 5.4 ASAP… Bug #25173 can be closed as duplicate of this… ------------------------------------------------------------------------ [2008-04-16 16:25:43] chsc at peytz dot dk Description: ------------ When multiple response headers with the same name are set using header(..., false), only the last value is returned by apache_response_headers(). apache_response_headers() returns an associative array, so it cannot have multiple entries for the same header name. However, according to section 4.2 of RFC 2616, multiple headers with the same name may be combined into one comma-separated header. It MUST be possible to combine the multiple header fields into one "field-name: field-value" pair, without changing the semantics of the message, by appending each subsequent field-value to the first, each separated by a comma. I suggest that apache_response_headers() does this, i.e. combines multiple headers with comma. Reproduce code: --------------- header('Foo: 1'); header('Foo: 2', false); header('Foo: 3', false); var_dump(apache_response_headers()); Expected result: ---------------- array(2) { ["X-Powered-By"]=> string(9) "PHP/5.2.5" ["Foo"]=> string(1) "1,2,3" } Actual result: -------------- array(2) { ["X-Powered-By"]=> string(9) "PHP/5.2.5" ["Foo"]=> string(1) "3" } ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=44744&edit=1