On Sat, April 14, 2007 8:36 pm, Richard Kurth wrote:
> What do you do when isset does not work? If I send data in a
> $_REQUEST['var'] like
> if (isset($_REQUEST['var'])) {
> }
> Put var has no data it still says it is set. Because $_REQUEST['var']
> = ""
> and isset thinks "" is set
It *is* set.
It just happens to be the empty string.
That is VERY different from not being set at all.
If you do not want to allow the empty string as a valid input, that
should, imho, be handled by your data validation routines, which
happen after your business logic of doing whatever based on isset()
http://php.net/strlen is a good one for that.
In other words, use isset() to decide what the user is trying to do
first.
Then use data validation to decide if they have provided
valid/suitable input. If the input is egregious enough (i.e., no
normal human would ever generate that state) you can respond
differently with, say, die("hacker");
--
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Know what I want?
I want you to buy a CD from some indie artist.
http://cdbaby.com/browse/from/lynch
Yeah, I get a buck. So?
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