[PHP] working with jpegs

2001-04-03 Thread J.R. Lillard

i've only been using the php image functions for about a week now.  i
understand that jpegs have their own custom color pallette.  so whenever i
want to add something to an existing jpeg, the only colors i have to work
with are the ones that are already defined.  hence the purpose of
imagecolorclosest().  at least this is how i understand things.  so, for
example, if i'm working with a jpeg that mostly uses dark colors, attempting
to add white text to it doesn't always come out as bright as i'd like.  is
there any way around this without switching to a different image format or
making system calls to something more advance like imagemagick?  is it not
possible to expand the color pallette after doing an imagecreatefromjpeg()?

-jr



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[PHP] gd 2.0

2001-04-07 Thread J.R. Lillard

has anyone gotten php to compile with gd 2.0?  i know gd 2.0 is still in
beta, but i was able to compile and install it without any problems.  when
compiling php, however, i end up with some error in regards to the libmysql
extension.  if i switch back to gd 1.8, all works fine.

-jr



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[PHP] network connections

2001-09-07 Thread J.R. Lillard

i've got a command-line php script that i've been using to deliver large 
amounts of e-mail.  originally it relied on mail() to deliver the 
messages but i could easily overload sendmail and bring the box (redhat 
7.1) to a crawl.  so i am now using the various network functions to 
speak smtp directly from the script.  i seem to be having a problem with 
an excessive number of tcp connections that eventually brings down the 
machine.

i have attempted a semi-multi-threaded approach by spawning off 
additional copies of the script to deliver more mail simultaneously.  so 
i might have 100 copies of the script running at the same time.  and 
this was after dumping a million messages into my mysql-based mail 
queue.  things may run okay for a few hours...maybe even a day...but 
then doing a netstat shows over 10k tcp connections.  and the only way 
i've found to fix the problem is to reboot the machine.

thinking that i was attempting too many connections at the same time, i 
throttled down the number of threads to 25.  this slowed down my mail 
delivery of course.  and it allowed the machine to stay up longer.  but 
i eventually ran into the same problem after maybe two or three weeks. 
just before it died, i was showing over 30k tcp connections.

are they any known issues in the php networking code that would cause 
this to happen?  as far as i know, i should never have more than 25 tcp 
connections open.  but i'm not sure if they are not being closed 
properly or what.

-- 
-jr


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