Regex matching characters unless they're at the end of a string

Not sure how to explain this, but here it goes.

could contain a string followed by none, one or multiple dots:


Using regex I'm looking for any invalid characters in $val and then I want to replace them.


$inv is an array of invalid entries, this also includes a dot.

How do I strip all $inv characters from $val EXCEPT any dots on the end? eg:

if $val = te%st... the correct result should be test…

if $val = te.est. the correct result should be test.

Hope that makes sense. Thanks.

Hi,

what about a "mixed" sequence of invalid characters at the end like in

Will the "%" be kept?

If yes, then simply replace all sequences of invalid characters with a valid character following:

Unfortunately not.

% is coming from $inv, that needs to be removed as do any dots unless they are at the end