Description:
------------
Input_get and filter FILTER_VALIDATE_INT, i try to test this value : 2147483648.
But input_get return me a negative value : -2147483648.
Documentation say that : Integer overflow
If you specify a number beyond the bounds of the integer  type, it will be interpreted as a float instead. Also, if you perform an operation that results in a number beyond the bounds of the integer type, a float will be returned instead.

documentation link : http://www.php.net/manual/en/language.types.integer.php

Here i expect a float value. It's normal or not ?
Thank you for your work.


Reproduce code:
---------------
$_GET['test'] = 2147483648;
<?php
$source = INPUT_GET;
$name = 'test';
$filter = FILTER_VALIDATE_INT;
var_dump(input_get($source, $name, $filter));
?>


Expected result:
----------------
float(2147483648)


Actual result:
--------------
int(-2147483648)