why can not get the correct return value?

Hello
I run a simple php file as:
<?php
$result=system("atq",$parameter);
echo '<br>result='.$result;
echo '<br>parameter='.$parameter;
//phpinfo();
?>

run it on command line can get the parameter value as 0,but if use
browser to run it,the parameter value is 1,Why?
Note:I had set the user and group in httpd.conf.if change as
$result=system("ls",$parameter);,then can get the parameter value as 0

On Dec 12, 7:15 am, luo.feng...@gmail.com wrote:
> Hello
> I run a simple php file as:
> <?php
> $result=system("atq",$parameter);
> echo '<br>result='.$result;
> echo '<br>parameter='.$parameter;
> //phpinfo();
> ?>
>
> run it on command line can get the parameter value as 0,but if use
> browser to run it,the parameter value is 1,Why?
> Note:I had set the user and group in httpd.conf.if change as
> $result=system("ls",$parameter);,then can get the parameter value as 0

Since you haven't set the value of $parameter anywhere I'm not sure
why you'd expect it have any particular value.

On Wed, 12 Dec 2007 15:35:37 +0100, ZeldorBlat <zeldorblat@gmail.com>
wrote:

> On Dec 12, 7:15 am, luo.feng...@gmail.com wrote:
>> Hello
>> I run a simple php file as:
>> <?php
>> $result=system("atq",$parameter);
>> echo '<br>result='.$result;
>> echo '<br>parameter='.$parameter;
>> //phpinfo();
>> ?>
>>
>> run it on command line can get the parameter value as 0,but if use
>> browser to run it,the parameter value is 1,Why?
>> Note:I had set the user and group in httpd.conf.if change as
>> $result=system("ls",$parameter);,then can get the parameter value as 0
>
> Since you haven't set the value of $parameter anywhere I'm not sure
> why you'd expect it have any particular value.

It's called a reference...
http://www.php.net/system
--
Rik Wasmus

On 12ÔÂ12ÈÕ, ÏÂÎç10ʱ45·Ö, "Rik Wasmus" <luiheidsgoe....@hotmail.com> wrote:
> On Wed, 12 Dec 2007 15:35:37 +0100, ZeldorBlat <zeldorb...@gmail.com>
> wrote:
>
>
>
> > On Dec 12, 7:15 am, luo.feng...@gmail.com wrote:
> >> Hello
> >> I run a simple php file as:
> >> <?php
> >> $result=system("atq",$parameter);
> >> echo '<br>result='.$result;
> >> echo '<br>parameter='.$parameter;
> >> //phpinfo();
> >> ?>
>
> >> run it on command line can get the parameter value as 0,but if use
> >> browser to run it,the parameter value is 1,Why?
> >> Note:I had set the user and group in httpd.conf.if change as
> >> $result=system("ls",$parameter);,then can get the parameter value as 0
>
> > Since you haven't set the value of $parameter anywhere I'm not sure
> > why you'd expect it have any particular value.
>
> It's called a reference...http://www.php.net/system
> --
> Rik Wasmus

I has checked it,but it is a pity,still can not get the expected
result.I had modified the httpd.conf,php.ini,sudoers,at.allow

On 12 Dec, 12:15, luo.feng...@gmail.com wrote:
> Hello
> I run a simple php file as:
> <?php
> $result=system("atq",$parameter);
> echo '<br>result='.$result;
> echo '<br>parameter='.$parameter;
> //phpinfo();
> ?>
>
> run it on command line can get the parameter value as 0,but if use
> browser to run it,the parameter value is 1,Why?
> Note:I had set the user and group in httpd.conf.if change as
> $result=system("ls",$parameter);,then can get the parameter value as 0

When run on the command line, it is running under the userid that you
are logged in with.
When run from a browser, the web server (apache?) is running it under
its userid. Possibly this latter userid does not have the correct
authority?

On Dec 12, 9:45 am, "Rik Wasmus" <luiheidsgoe...@hotmail.com> wrote:
> On Wed, 12 Dec 2007 15:35:37 +0100, ZeldorBlat <zeldorb...@gmail.com>
> wrote:
>
>
>
> > On Dec 12, 7:15 am, luo.feng...@gmail.com wrote:
> >> Hello
> >> I run a simple php file as:
> >> <?php
> >> $result=system("atq",$parameter);
> >> echo '<br>result='.$result;
> >> echo '<br>parameter='.$parameter;
> >> //phpinfo();
> >> ?>
>
> >> run it on command line can get the parameter value as 0,but if use
> >> browser to run it,the parameter value is 1,Why?
> >> Note:I had set the user and group in httpd.conf.if change as
> >> $result=system("ls",$parameter);,then can get the parameter value as 0
>
> > Since you haven't set the value of $parameter anywhere I'm not sure
> > why you'd expect it have any particular value.
>
> It's called a reference...http://www.php.net/system
> --
> Rik Wasmus

Doh! Thanks, Rik.

On 12ÔÂ13ÈÕ, ÏÂÎç9ʱ29·Ö, Captain Paralytic <paul_laut...@yahoo.com> wrote:
> On 12 Dec, 12:15, luo.feng...@gmail.com wrote:
>
> > Hello
> > I run a simple php file as:
> > <?php
> > $result=system("atq",$parameter);
> > echo '<br>result='.$result;
> > echo '<br>parameter='.$parameter;
> > //phpinfo();
> > ?>
>
> > run it on command line can get the parameter value as 0,but if use
> > browser to run it,the parameter value is 1,Why?
> > Note:I had set the user and group in httpd.conf.if change as
> > $result=system("ls",$parameter);,then can get the parameter value as 0
>
> When run on the command line, it is running under the userid that you
> are logged in with.
> When run from a browser, the web server (apache?) is running it under
> its userid. Possibly this latter userid does not have the correct
> authority?

Yes,I know your meaning,My web server is apache,I had changed the user
and group as Test_bench,thse user that I logged in Linux is Test_bench
too,so,I don't think this issue is about User Setting.