Posted by jdbartlett on 08/20/07 19:33

I'm trying to capture output from a command line utility (XMLSec), but
only get an empty result. If I call the script from the command line,
I see XMLSec's output, but I can't seem to capture it!

My PHP installation is working correctly and captures other command
line output just fine, XMLSec is the only exception I've found. I've
also tried a couple of other systems to confirm this behavior.

Capture methods I've tried include:

- shell_exec

- exec, with and without output array

- system

- passthru combined with output buffering

- fread-ing from popen('xmlsec1...', 'r')

- proc_open

I get the same result for each of these: an empty string (or array in
the case of exec's $output).

Any idea what's happening here? Any help would be much appreciated.

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