# phpman > perldoc > CGI::Untaint::integer

## NAME
    [CGI::Untaint::integer](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3AUntaint%3A%3Ainteger/markdown) - validate an integer

## SYNOPSIS
      my $age = $handler->extract(-as_integer => 'age');

## DESCRIPTION
    This Input Handler verifies that it is dealing with an integer. The integer can be positive or
    negative, but only in a basic format (i.e. a string of digits). It will not accept exponentials.

## AUTHOR
    Tony Bowden, <<kasei@tmtm.com>>.

## COPYRIGHT
    Copyright (C) 2001 Tony Bowden. All rights reserved.

    This module is free software; you can redistribute it and/or modify it under the same terms as
    Perl itself.