Re: Is header() malfunction due to PHP5.3.3 -> 5.4.11 transition?

Stuart, Thanks for getting back to me.... you were right - I had misread the headers_sent() Return Value statement. When I went back and tested it turns out that the 'initialize' routine is somehow prematurely sending output out. So, now I have to figure out which of the ten called routines and classes/objects in the initialize script are the culprit. I greatly appreciate the assistance, Jonathan On 2/9/2013 2:34 PM, Stuart Dallas wrote: > On 9 Feb 2013, at 19:00, Jonathan Eagle <jeofva@attglobal.net> wrote: > >> I'm having a problem with a very straightforward routine; one that works >> in one PHP installation but not on the other. The only difference that I >> can see between the working version and the non-working version is that >> the one that doesn't work is running on the later version of PHP. The >> following basic log-in routine works fine on my personal development >> server, running PHP 5.3.3, but doesn't work on the production server, >> hosted by 1&1.com that is running PHP 5.4.11. >> >> <?php >> require_once('../includes/initialize.php'); //<== $session object >> init'd and set to false >> >> if(!$session->is_logged_in()) >> { >> header("Location: login.php"); >> exit; >> } >> ?> >> >> login.php is in the same directory as the file that has this code at the >> very top of the file. >> >> Everything works as expected right up to the 'exit;' line. >> * $session->is_logged_in() is false >> * when tested immediately after the 'header("Loc...)' statement, >> 'headers_sent()' reports true. >> * no error messages result (like: 'header already sent', etc.) >> >> Instead of the program flow moving to 'login.php', the URL indicates >> that the destination is the original file, except that the file is empty >> - zero bytes. I've tried accessing the routine via three different >> computers, all running different MS operating systems from XP to Win7 >> and they all behave identically. The behavior is also consistent >> between browsers (i.e., FireFox, Chrome, and Windows Explorer). >> >> I also did a $_SERVER variable dump immediately before and after the >> 'header(...' line, expecting to see a difference in at least one of the >> 'REDIRECT_*' elements, but both outputs where identical with the >> exception that the $_SERVER ouput after the header statement was >> executed was missing the following line: >> >> ["HTTP_CACHE_CONTROL"]=> "max-age=0" >> >> It doesn't look relevant to me, but I include it to be thorough. >> >> I looked through the PHP changelog pages, but I don't see mention of the >> problem (of course, that might just be due to my ignorance). The ISP >> for the production version of PHP indicated that I should come here for >> help, so here I am. >> >> Can anyone shed some light as to what is (or might be) going on? >> >> Any help or guidance that can be offered will be greatly appreciated. > > > Check the output buffering settings. You say no errors are displayed, but are you sure that > errors are set to be displayed? > > You mention the headers_sent() result immediately after the header() function call is true. If > the header() function call had worked it would not be true, it would be false. You have output being > sent to the client before that header() function call. > > -Stuart >