PJ wrote:
> This really needs some explanation
> I found this on the web:
> <?php echo `whoami`; ?>
> with it there was the comment "the direction of those single-quotes matters"
> (WHY ?)
> and it works....
>
> But this (_*FROM THE PHP MANUAL***_ * - exec()* executes the given
> /command/ ) does not,
> COPIED AND PASTED:
> |<?php
> // outputs the username that owns the running php/httpd process
> // (on a system with the "whoami" executable in the path)
> echo exec('whoami');
> ?> |
> What is going on here?
> And I often find such discrepancies in examples - and some wonder why I
> seem to be so stupid... and don't know the fundamentals... :-\
Others have shown how exec() returns the output. If you use
shell_exec() it's the same as using the backticks:
<?php echo `whoami`; ?>
-or-
<?php echo shell_exec("whoami"); ?>
You can use single quotes here also, i used double so you can easily
tell they are not backticks
--
Thanks!
-Shawn
http://www.spidean.com
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