Description:
------------
---
From manual page: http://www.php.net/filter.filters.flags
---
For example the flag FILTER_REQUIRE_ARRAY is not even mentioned and may be other flags aren't in the list (such FILTER_FORCE_ARRAY)

Those values aren't in the mentioned page nor in http://php.net/manual/en/filter.filters.php

But its mentioned in the next page as an example

http://php.net/manual/en/function.filter-input-array.php


Test script:
---------------
<form method='post'>
    <input type='text' name='fields[0]' value='v1' />
    <input type='text' name='fields[1]' value='v2' />
    <br>
    <input type='submit' name='button' value='sendme' />
</form>
<?php filter_input(INPUT_POST,'fields', FILTER_DEFAULT, FILTER_REQUIRE_ARRAY)
// it works as expected
?>