PHP exec()

[transparencia]

Hi guys!

 

I have a php script that works and outputs info:

 

<?php

echo exec("uptime");

?>

 

and another that doesn't output anything:

 

<?php

echo exec("MP4Box");

?>

 

Why?

[nethnet]

The exec() function doesn't output anything by default, it just runs external commands.  You can set an optional second parameter variable to store output as an array, or you can look into the system() / passthru() functions that return output.