Description:
------------
I make a code:
system('ls -gfjgsfl');

and I nothing see then as I read in manual: "Execute an external program and ->display output<-"

In this situation then I use wrong unix command the system() function not worked propertly.

I think what it's will be solved in next version...
I do not know how it's work under PHP5.

P.S.
With passthru() and exec() functions same problem :o(

Reproduce code:
---------------
<?php

system('ls -gfjgsfl');
//nothing see

$_out = system('ls -gfjgsfl');
//still nothing see

?>

Expected result:
----------------
/bin/ls: invalid option -- j
Try `/bin/ls --help' for more information.