Since the library doesn't need to give support to version 5.4 or less of
PHP using variadics in the constructor of "AbstractFilterRule" seems
better than doing the whole validation.
This commit will also apply the contribution guidelines to
"AbstractFilterRule" and use a better naming for it.
Signed-off-by: Henrique Moody <henriquemoody@gmail.com>
The "Alnum" rule is supposed to validate alphanumeric values, but
instead, it also validates any whitespace character as valid.
The rule also accepts a list of characters on its constructor, so it the
users intentionally want some specific characters to also be allowed it
is better than they also defined these characters on the rule's
constructor.
While refactoring the rule I could notice that "AbstractCtypeRule" is
just an overhead that does not add much to it, so instead of extending
it "Alnum" now extends "AbstractFilterRule" directly (which is the
parent of "AbstractCtypeRule").
And since we want all rules to follow our contribution guidelines, this
commit also make sure the "Alnum" rule is in accordance with that.
Signed-off-by: Henrique Moody <henriquemoody@gmail.com>
