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Re: Magic quotes? Should I still be cautious? [message #176421 is a reply to message #176419] Fri, 06 January 2012 10:07 Go to previous messageGo to previous message
Erwin Moller is currently offline  Erwin Moller
Messages: 228
Registered: September 2010
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Senior Member
On 1/6/2012 12:28 AM, M. Strobel wrote:
> Am 05.01.2012 14:08, schrieb Erwin Moller:
>>
>> And $_REQUEST should be avoided anyway in all situation (in my
>> humble opinion) for various reasons. But if you use it, it should
>> indeed be added to your list in your approach.
>>
>> Regards,
>> Erwin Moller
>
> For me $_REQUEST is quite handy. All my functions reading user
> input use this. So they work equally well on different requests.

Hi Strobel,

And why do you prefer $_REQUEST over using the exact superglobal?
You do know where the information is supposed to come from.


>
> But then I have to mention my setup with a sort of call
> dispatcher: the called function is looked up in a list taking
> into account $_SERVER['REQUEST_METHOD'].

That explanation makes no sense to me without any more context.
Are you saying you are limiting access to certain function by checking
the used $_SERVER['REQUEST_METHOD']?
If so, that won't help at all, since anybody could still use the "right"
REQUEST_METHOD and manipulate the contents of GPC at the same time.


>
> All user input must be verified, no matter if it's in $_GET,
> $_POST, $_COOKIE or $_REQUEST for that matter - they can all be
> faked!

Of course.
But how does that relate to using $_REQUEST over the exact superglobal?

>
> Do not think that only your forms will be sent to your program.
>
> /Str.

I still see no reason at all to use $_REQUEST. It strikes me as lazy and
dangerous.
Of course you can program right and safe using $_REQUEST only, but it is
harder. On all occasion you have to wonder if the information you get
presented came from the place you expected it to come from.
Ans since there is no trade-off (no advantage in using $_REQUEST over
the exact superglobal) I don't see why you use it.

Often people who use it (in my experience) use $_REQUEST because they
never bothered to understand how and what information is send around.
Hence they had a poor understanding of what they are doing.
I am not saying you don't understand. I just cannot think of any valid
reason to use $_REQUEST.

In my opinion $_REQUEST is a design mistake by the PHP developers, just
like magic_quotes. :-)

If you think I am wrong about that, please tell me why.
I had this discussion a few years back too, but the guy turned out to be
a troll (and silly me took the bait!), so that turned out to be a dead end.

I am curious what the advantages or $_REQUEST are in your opinion.

In a few exceptional cases where I do expect the info coming from POST
or GET and cannot tell which one, I simply use something like:

$thing = (
(isset($_GET["thingy"]))?$_GET["thingy"]:
(isset($_POST["thingy"])?$_POST["thingy"]:"not set")
);

which is a bit awkward.
But since I almost always know where my data comes from, I don't mind
such a contraption once in a while. :-)


Regards,
Erwin Moller

--
"That which can be asserted without evidence, can be dismissed without
evidence."
-- Christopher Hitchens

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