[PHP] HTTP headers and include()
I've written a separate function library for a cluster of web pages, and I
then include(slib.php) in each of the web pages, instead of copying 12k
of code to each page individually. Some of the pages require (simple)
authentication or redirection headers, which some of the code in the
library is supposed to handle.
Problem is, when I include the library, even though there's no other output
to be processed, it still generates the linefeed that triggers sending all
the current headers, so if(!headers_sent) {...} fails.
Is it possible to include php code without sending headers? I've tried
exit() within the library, but that fails to work. Instead, exit causes
generation of HTML code (a content type metatag) that is neither in the
main page nor the library. I've also tried a simple return() (per the
documentation), but that generates a parse error.
I'm using Apache 1.3.12, PHP 4.0.2 and Slackware Linux (Not sure which
kernel version).
Thanks
Cas
PS: Please CC replies to [EMAIL PROTECTED], since I'm not officially
subscribed to this list. Thanks.
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Re: [PHP] HTTP headers and include()
Andy [EMAIL PROTECTED] wrote in article
003b01c12b23$d1f245d0$0b01a8c0@ANDreY...
See if is there some kind of echo before header()s, or HTML sent to
browser.
No, I've been extremely careful to avoid that. The following are the two
test files I've been using to try to solve this.. (sans the --
File Begin/End --)
lib.php:
-- File Begin --
?php
function do_nothing() {}
?
-- File End --
test.php
-- File Begin --
?php
include_once(lib.php);
if( headers_sent ) {
$senthdrs = Headers Sent;
} else {
$senthdrs = Headers not sent;
}
?html
headtitlePHP Lib Test/title/head
bodyh1PHP Lib Test/h1hr
?php
echo( $senthdrs );
?/body
/html
-- File End --
End result:
PHP Lib Test
Headers sent
From what I can tell from the documentation and through experimentation,
either there's additional headers being generated when php includes the
content (a content-type header maybe?) or more likely, after php is done
parsing the file and 'removing' the code, it comes back as a single CRLF,
which triggers Apache/PHP to send the headers. Actually, that setup makes
sense to me, but I'm trying to find out if there is a way around it.
Thanx
Cas
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