1--TEST-- 2filter_var_array() - using the add_empty option 3--SKIPIF-- 4<?php if (!extension_loaded("filter")) die("skip"); ?> 5--FILE-- 6<?php 7 8$data = array('foo' => 123); 9 10var_dump( 11 filter_var_array($data, array('foo' => array('filter' => FILTER_DEFAULT), 'bar' => array('filter' => FILTER_DEFAULT)), false), 12 filter_var_array($data, array('foo' => array('filter' => FILTER_DEFAULT), 'bar' => array('filter' => FILTER_DEFAULT))) 13); 14 15?> 16--EXPECT-- 17array(1) { 18 ["foo"]=> 19 string(3) "123" 20} 21array(2) { 22 ["foo"]=> 23 string(3) "123" 24 ["bar"]=> 25 NULL 26} 27