> 1. Why doesn't "use strict" complain about the $1 not
> being declared?
$1, $2 etc are locally scoped variables which come from the
regex. A regex like:
m/(..)(.*)/
will place the first two characters into $1, and the rest
into $2 - according to the parathesis.
> 2. How can I filter ALL of my form input variables with
> this regex? Or maybe better asked; How can this be
> WRITTEN to filter ALL of my form variables at once?
Usually you don't want to use the same one for all,
although you can. Do something like:
foreach ($value1, $value2, $value3) {
/^(................)$/ ? $_=$1 : undef $_;
}
The ? : is a special trinary operator which effectively
does:
if (...) {...} else {...}
(...) ? {...} : {...}
Take care,
Jonathan Paton
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