Where can I find the GD Library standalone executable file?

[comp.lang.php]

I downloaded the tarball and while was able to compile within PHP with
no problems, I am having memory timeout issues involving image
manipulation with extremely large images (800K - 2mb). Requirements
are to create thumbnails for even these banner-sized images, but PHP +
GD + [huge image] = too much memory.

I'm trying to prove that it is undoable, though the suggestion was to
do a command-line GD call to the image instead of using the PHP
functions to do so to save some memory; if it still times out, then
it's undoable altogether.

However, I cannot find the standalone executable file that will ensure
I can run GD from the command line. Suggestions?

Thanx
Phil

[Mladen Gogala]

On Thu, 18 May 2006 15:10:20 -0700, comp.lang.php wrote:

However, I cannot find the standalone executable file that will ensure
I can run GD from the command line. Suggestions?

GD is a library, you don't run it, you link your executable with it.

$ rpm -ql gd-2.0.33-2
/usr/lib/libgd.so.2
/usr/lib/libgd.so.2.0.0
/usr/share/doc/gd-2.0.33
/usr/share/doc/gd-2.0.33/COPYING
/usr/share/doc/gd-2.0.33/README-JPEG.TXT
/usr/share/doc/gd-2.0.33/entities.html
/usr/share/doc/gd-2.0.33/index.html

As you can see, there is nothing to execute.

--
http://www.mgogala.com

[Erwin Moller]

comp.lang.php wrote:

I downloaded the tarball and while was able to compile within PHP with
no problems, I am having memory timeout issues involving image
manipulation with extremely large images (800K - 2mb). Requirements
are to create thumbnails for even these banner-sized images, but PHP +
GD + [huge image] = too much memory.

I'm trying to prove that it is undoable, though the suggestion was to
do a command-line GD call to the image instead of using the PHP
functions to do so to save some memory; if it still times out, then
it's undoable altogether.

Hi Phil,

Both the timeout- and the memoryissue are relative.
You can adjust them to your own liking.
This can be done by via php.ini or via ini_set() above your script.

Just browse through php.ini and look for the timeoutsettings
(max_execution_ time) for a script and max_memorysize (memory_limit).

Read more here:
http://nl3.php.net/manual/en/function.ini-set.php
and
http://nl3.php.net/manual/en/ini.php#ini.list
However, I cannot find the standalone executable file that will ensure
I can run GD from the command line. Suggestions?
As far as I know, you never call the GD libs directly.
(But maybe somebody wrote a wrapper, not sure, why not use PHP as wrapper?
It has many nice functions.)

One more note on the memory-issue:
If you have a jpg file of say: 100 KB with dimensions of 1000 X 400 pixels ,
and the file is represented as 24-bit in memory, PHP (and any language)
needs a LOT more than 100KB to store it.

You can easily estimate the memory needed: width X heigth X 3 bytes, so that
will be 1.200.000 Bytes for an 1000x400 image.

Just increase the memory needed and the time your scripts needs.
I think that is by far the easiest solution. :-)

Good luck

Regards,
Erwin Moller

Thanx
Phil

[comp.lang.php]

Erwin Moller wrote:

comp.lang.php wrote:

I downloaded the tarball and while was able to compile within PHP with
no problems, I am having memory timeout issues involving image
manipulation with extremely large images (800K - 2mb). Requirements
are to create thumbnails for even these banner-sized images, but PHP +
GD + [huge image] = too much memory.

I'm trying to prove that it is undoable, though the suggestion was to
do a command-line GD call to the image instead of using the PHP
functions to do so to save some memory; if it still times out, then
it's undoable altogether.

Hi Phil,

Both the timeout- and the memoryissue are relative.
You can adjust them to your own liking.
This can be done by via php.ini or via ini_set() above your script.

Just browse through php.ini and look for the timeoutsettings
(max_execution_ time) for a script and max_memorysize (memory_limit).

Read more here:
http://nl3.php.net/manual/en/function.ini-set.php
and
http://nl3.php.net/manual/en/ini.php#ini.list

However, I cannot find the standalone executable file that will ensure
I can run GD from the command line. Suggestions?

As far as I know, you never call the GD libs directly.
(But maybe somebody wrote a wrapper, not sure, why not use PHP as wrapper?
It has many nice functions.)

One more note on the memory-issue:
If you have a jpg file of say: 100 KB with dimensions of 1000 X 400 pixels ,
and the file is represented as 24-bit in memory, PHP (and any language)
needs a LOT more than 100KB to store it.

You can easily estimate the memory needed: width X heigth X 3 bytes, so that
will be 1.200.000 Bytes for an 1000x400 image.

Just increase the memory needed and the time your scripts needs.
I think that is by far the easiest solution. :-)

Hey, that's what I'm doing now, although not as precisely as what you
have, however, it still runs out of memory, because while PHP increases
memory for itself, it resides on an active live server implementing
several other applications, thus, it either takes away memory from
another working application, or it never gets the extra memory it needs
because another application is using the memory up at the time, thus,
increasing memory doesn't always work in this case.

I was told by people at the DC PHP user's group that the best way to
debug this issue is to run GD from the command line (I read online as
well that this is possible, sorry for those who doubt, but supposedly
there's a Perl wrapper out there) to see if GD + PHP = too much memory
then GD + PHP - PHP = [how much memory?].

Phil

Good luck

Regards,
Erwin Moller

Thanx
Phil

[NC]

comp.lang.php wrote:

I am having memory timeout issues involving image
manipulation with extremely large images (800K - 2mb).
There is no such thing as a "memory timeout". You can have an
out-of-memory error (the script does not have enough memory to complete
what's required of it), or you can have a timeout (the script runs past
its allotted time). The former is controlled by memory_limit directive
in php.ini, the latter, by max_execution_t ime in php.ini and HTTP
server's timeout setting, whichever is shorter.

In your case, it apprears that you have an out-of-memory error. So
deal with it accordingly -- increase memory_limit. Note that you may
be able to do it from the script itself:

ini_set('memory _limit', '20M');
I cannot find the standalone executable file that will ensure
I can run GD from the command line.

There is no such file. GD is a library. If you want to access its
functionality from a command-line program, you need to write that
program or use a program someone else wrote. Check out Martin
Gleeson's fly:

http://martin.gleeson.com/fly/

Alternatively, you can install ImageMagick, which does include a
command-line executable...

Cheers,
NC