Get vars in URL

[Marc Labtec]

Hi all,

:)

I have an URL like this index.php?a=0&b =0&c=1&d=0&e=0& f=0

My prob now is: how can I find out if only *one* get var (a,b,d,d,e,f)
is 1?
I dopn't care about the other, i must detect, if *only one* var in the
url has its value 1, and all others are 0 then...

Thanks in advance - you are a great group here!

Marc

[Nel]

Re: Get vars in URL

"Marc Labtec" <php@komatia.co m> wrote in message
news:ada5a15f.0 406110106.61dca c51@posting.goo gle.com...[color=blue]
> Hi all,
>
> :)
>
> I have an URL like this index.php?a=0&b =0&c=1&d=0&e=0& f=0
>
> My prob now is: how can I find out if only *one* get var (a,b,d,d,e,f)
> is 1?
> I dopn't care about the other, i must detect, if *only one* var in the
> url has its value 1, and all others are 0 then...
>
> Thanks in advance - you are a great group here!
>
> Marc[/color]
I am sure there are several ways to do this, but if you know that the values
will always be 1 or 0, you could simply add the values together.

if ($a+$b+$c+$d+$e +$f == 1) { OK } else { NOT OK }

Nel

[David Mackenzie]

Re: Get vars in URL

On Fri, 11 Jun 2004 10:53:37 +0100, "Nel" <nelly@ne14.co. NOSPAMuk>
wrote:
[color=blue]
>"Marc Labtec" <php@komatia.co m> wrote in message
>news:ada5a15f. 0406110106.61dc ac51@posting.go ogle.com...[color=green]
>> Hi all,
>>
>> :)
>>
>> I have an URL like this index.php?a=0&b =0&c=1&d=0&e=0& f=0
>>
>> My prob now is: how can I find out if only *one* get var (a,b,d,d,e,f)
>> is 1?
>> I dopn't care about the other, i must detect, if *only one* var in the
>> url has its value 1, and all others are 0 then...
>>
>> Thanks in advance - you are a great group here!
>>
>> Marc[/color]
>I am sure there are several ways to do this, but if you know that the values
>will always be 1 or 0, you could simply add the values together.
>
>if ($a+$b+$c+$d+$e +$f == 1) { OK } else { NOT OK }[/color]

But as they're being passed by GET, none of the values can be
guaranteed.

Also, what about these scenarios:

index.php?a=-1&b=1&c=1&d=0&e =0&f=0

index.php?a=0&b =1&c=2&d=3&e=4& f=5

index.php?a=0&b =0&c=1&d=0&e=0& f=0&g=1&h=1&i=0

index.php?a=1

From the OP:[color=blue][color=green]
>> My prob now is: how can I find out if only *one* get var (a,b,d,d,e,f)
>> is 1?
>> I dopn't care about the other, i must detect, if *only one* var in the
>> url has its value 1, and all others are 0 then...[/color][/color]

There is a contradiction here. He says "I don't care about the other",
but then says "if *only one* var in the url has its value 1, and all
others are 0 then..."

So, must the other GET variables be zero or not?

You could iterate through the $_GET[] array, making a count of the 1's
and 0's and then test those counts. The sum of the counts should equal
the number of GET variables.

--
David ( @priz.co.uk )

[Brad Kent]

Re: Get vars in URL

$result = ( count(array_key s($_GET,1)) == 1 ); // $result is true or false

php@komatia.com (Marc Labtec) wrote in message news:<ada5a15f. 0406110106.61dc ac51@posting.go ogle.com>...[color=blue]
> Hi all,
>
> :)
>
> I have an URL like this index.php?a=0&b =0&c=1&d=0&e=0& f=0
>
> My prob now is: how can I find out if only *one* get var (a,b,d,d,e,f)
> is 1?
> I dopn't care about the other, i must detect, if *only one* var in the
> url has its value 1, and all others are 0 then...
>
> Thanks in advance - you are a great group here!
>
> Marc[/color]

[Andy Hassall]

Re: Get vars in URL

On 11 Jun 2004 02:06:12 -0700, php@komatia.com (Marc Labtec) wrote:
[color=blue]
>I have an URL like this index.php?a=0&b =0&c=1&d=0&e=0& f=0
>
>My prob now is: how can I find out if only *one* get var (a,b,d,d,e,f)
>is 1?
>I dopn't care about the other, i must detect, if *only one* var in the
>url has its value 1, and all others are 0 then...[/color]

Something like:

<?php
$matchVar = '';
$ok = false;
foreach (array('a','b', 'c','d','e','f' ) as $var)
if (@$_GET[$var] == 1)
if ($matchVar) // double match
$ok = false;
else { // found one
$matchVar = $var;
$ok = true;
}
elseif (@$_GET[$var] != 0) // bad value
$ok = false;

if ($ok)
print "Match found = $matchVar";
else
print "Some invalid combination";

?>

--
Andy Hassall <andy@andyh.co. uk> / Space: disk usage analysis tool
http://www.andyh.co.uk / http://www.andyhsoftware.co.uk/space