Re: [Phplib-users] page expiry problems

[Layne W. <la...@dr...>]

>> Put your header declaration *after* page_open() - the default PHP 
>> behavior is to overwrite previously set headers of the same name. 
>> FWIW, when I send an image file through a PHP script, I send the 
>> following headers, mainly taken from session.inc:
>>
>> header("Expires: " . gmdate("D, d M Y H:i:s", time() + 1440 * 60) . " 
>> GMT");
>> header("Last-Modified: " . gmdate("D, d M Y H:i:s", 
>> filemtime("./logo.gif")) . " GMT");
>> header("Cache-Control: public");
>> header("Cache-Control: max-age=" . 1440 * 60, false);
>> header("Pragma: public");
>>
>> HTH,
>> Layne Weathers
>
>
> If PHP overwrites headers with same name, how can your example have 
> two "Cache-Control" headers?

Notice that the second header sends a second argument, false. The 
*default* behavior is overwrite, but you can control that by telling 
PHP to append instead of overwrite.

Layne Weathers