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Posted by Giovanni R. on 05/29/07 18:40
gosha bine <stereofrog@gmail.com> wrote:
> what exactly is the desired behaviour of that new, emulated isset?
The fact is that I'm lazy. ;-)
I'd like to use a single function - a kind of wrapper for isset() - to
check whether the $var isset(), and to sanitize it according to my will.
Something like this:
function wrapper(&$var) {
if ( !isset($var) || !strlen($var) ) return '';
$var = trim ($var);
// other checks
return $var;
}
Here it is how it could be used:
print wrapper($array['inexistent_index']);
In this way, even if $array['inexistent_index'] isn't defined, I don't
get a notice. The fact is that wrapper() adds that index to the array
and sets $array['inexistent_index'] to NULL. :-(
So I was asking myself how isset() works and if a similar function could
be developed using PHP or not.
Giovanni
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