On Dec 19, 2007, at 12:51 PM, Web Scribble - Alexey Gutin wrote:
I am trying to check if a program is installed on the server through
PHP. In particular, FFMPEG. In Linux, I can just run “ffmpeg”, and
the shell will throw an error if it isn’t found. The same happens in
Windows.
Sorry for replying to a relatively old thread. I've been on
vacation. But I see know one exactly answered this - the
is_executable only works if you know the exact absolute path that the
program would be installed at. The following should work on a unix
based machine. There's got to be something similar for Windows, but I
don't want to reboot my Mac to try to figure it out :)
<?php
function getCommandPath($command = '')
{
// note: security vulnerability...
// should validate that $command doesn't
// contain anything bad
$path = `which $command`;
if ($path != null) {
$path = trim($path); // get rid of trailing line break
return $path;
} else {
return false;
}
}
var_dump(getCommandPath('ffmpeg'));
var_dump(getCommandPath('php'));
On my machine (which doesn't have ffmpeg), I get this output:
bool(false)
string(18) "/usr/local/bin/php"
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