PHP functions

[manual_overide]

I'm starting to teach myself some PHP. I'm experimenting with some functions and I want to be able to display my system's uptime on the page. I tried <?php system(uptime); ?> but all i get is nothingness.

What am I doing wrong??
I've also done the same thing with
<?php echo system(uptime); ?>


Thanks for any help

[Darth Tminos]

It's all in the exec baby!
Here is an example in of my books:

For examle, you would use the following code to
perform a ping of a server five times and print the
output:


$command = "ping -c5 www.host.com (http://www.host.com)
exec($command, $result, $rval);
for ($i = 0; $i < sizeof($result); $i++) {
echo "$result[$i]<br>";
}


------------------
I hold it to be the inalienable right of anybody to go to hell in his own way. -- Robert Frost
C-x C-c power!

[manual_overide]

OK. This SHOULD output something, but it doesn't. The code at least makes sense to the C++ part of my brain.


<?php
$command = "uptime";
exec($command, $return);
echo($return[0]);
?>


what's going on?

[Darth Tminos]

I don't know what to say, but it works for me.

------------------
I hold it to be the inalienable right of anybody to go to hell in his own way. -- Robert Frost
C-x C-c power!

[manual_overide]

Well, If anybody wants to see what's happening, go to http://manualoveride.darktech.org and veiw the source for the side frame. This is really starting to irritate me.

[manual_overide]

hmmmm.... It seems as though I can't make any system calls at all. Does anybody know what is going on?

Thanks for any help

[lone-nut]

Hey... dumb response = is PHP installed on yer server?
I have a PHP qeustion... should be ez for someone...
i'm trying to make a simple form using PHP
is it possible to pas the name value pair to itself...?
using a if else style thing like in CGI?

for example

if (some argument is passed){
process arguments..
} else {
print out form and prompt for input....
form action="this script"
}

bad pseudo code I know sorry...
i'm new to this...

I was using a seperate page for the output...
and aside from not working... I 'd really like
to do it like this...

any ideas..

thanks...

[Sweede]

<?
if(isset($testvar)){
[stuff that the form processes]
exit;
}else{
?>
<form action="<?=$PHP_SELF?>">
<input type=hidden name=testvar value=1>
<submit>
</form>
<? } ?>


works great,

[lone-nut]

hey cool thanks Sweede..

that looks a bit strange but I'll study it...
thanks fer the help brutha...

-ln

------------------
There is no pillow so soft as a clear conscience...

[manual_overide]

Yeah, php is installed. I just can't get it to do any system calls. Other stuff like date and time and stuff works great

[Sweede]

if you want to see one of my working scripts that use the above, just let me know.

as for system(), exec(), i just use `` (backticks),

$data = `uptime`;

[manual_overide]

Well, I tried using backticks, and I got this error:

Warning: Cannot
execute using
backquotes in safe
mode in
/usr/local/httpd/htdocs/sideframe.php3
on line 15

What does that mean?