<?php
error_reporting(E_ALL|E_STRICT);
$data = array(
    'product_id'    => 'product id<script>',
    'component'        => '10',
    'versions'        => '1.2.33',
    'testscalar'    => array('2','23','10','12'),
    'testarray'        => '2',
);

$args = array(
    'product_id'    => FILTER_SANITIZE_ENCODED,
    'component'     => array('filter'    => FILTER_VALIDATE_INT,
                             'flags'    => FILTER_FLAG_ARRAY,
                             'options'    => array("min_range"=>1, "max_range"=>10)
                        ),

    /* equivalent of => FILTER_SANITIZE_ENCODED as SCALAR is
     * the default mode
     */
    'versions'      => array(
                            'filter' => FILTER_SANITIZE_ENCODED,
                            'flags'  => FILTER_FLAG_SCALAR,
                            ),
    'doesnotexist'    => FILTER_VALIDATE_INT,
    'testscalar'    => FILTER_VALIDATE_INT,
    'testarray'    => array(
                            'filter' => FILTER_VALIDATE_INT,
                            'flags'  => FILTER_FLAG_ARRAY,
                        )

);

/*
The other INPUT_* can be used as well.
$myinputs = input_get_args($args, INPUT_POST);
*/
$myinputs = input_get_args($args, INPUT_DATA, $data);

var_dump($myinputs);