Re: [PHP] Catch STDERR

you could instead use the proc_* functions to do this. However, seen as those are pretty complicated and were not available in most php versions ran by most hosts, a lot of people had to come up with other ways around it. The most used way is indeed what you described. A simple:
$t = tempnam();
exec('/bin/SomeCommand 2>'.$t);
$stderror = file_get_contents($t);

is what most scripts seem to use currently
- tul

Frank Arensmeier wrote:
Spontaneously, my suggestion would to pipe the STDERR output from your command to a file. I have to admit that this doesn't feel like the most efficient solution since you would involve some reading / writing to your filesystem.

Regards.
//frank

17 feb 2007 kl. 21.49 skrev Peter Lauri:

Hi,

I am executing exec('some cool command', $stdout, $exitcode);

That is fine. I get what I in the beginning wanted. However, now I need to
catch the STDERR that the command is generating as well. Some of you might
tell me to redirect STDERR to STDOUT, but that is not possible as I need to
use the STDOUT as is to automate a process.

I know I can do fwrite(STDERR, 'Output some error\n');

So could I fread(STDERR, SOMESIZE)?

Is there anyone with experience of best way of doing this? Should I maybe
use proc_open or something similar and then write it to a file, and then
read that file? Hrm, doesn’t make any sense to do that.

Best regards,
Peter Lauri

www.dwsasia.com - company web site
www.lauri.se - personal web site
www.carbonfree.org.uk - become Carbon Free

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