Tickets :: Comment on [#7851] "Headers already sent" caused by usage of flush()

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Comment	>>>> Cannot modify header information - headers already sent in Unknown > >>>> on line 0 > >> This will happen if you have extra space at the top of one of your > >> config files. > > > > No, I'm pretty sure I haven't - in that case it would tell me file and line > > number where the output started. And even without the flush notices > > would still be there. > > > >> That is correct - DIMP will catch any unexpected input at the very > >> end of processing and toss it - but will also this unexpected output > >> at a DEBUG level to the Horde log. So this has probably been an > >> issue forever - you simply haven't seen it because you are not > >> logging at a DEBUG level. > > > > There is nothing related in my Horde log - but every day (running in > > production since four days right now) there have been thousands of > > this strange line in my syslog, I'm logging all PHP errors and warnings. > > > > In our beta phase I've had PHP output Notices to the browser, but I > > never noticed them, and I still have no idea, WHY they appear. It > > could also be related to some strange PHP bug. But fact is: removing > > the flush solved it, no more such notice so far. > > > > As soon as time allows me to do so, I'll try to do some more tests. > > If someone else running DIMP in a production environment with more > > than a few hundred users, preferrably with same / similar PHP version > > and APC enabled, could enable logging for PHP errors and tell me > > wheter he / she is also seeing this errors, that would be a great help. > > > > For sure it could also be related to our personalisation / customization > > work, we strongly modified DIMP's appearance - but (repeating myself) > > if I really would have some prior output in my code or config files, PHP > > would tell me WHERE output has started. > > > > This one is really strange, I've neve before seen something similar. > > Anyone else? > > > >
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