Mine

while ($field = each($_POST)) {		if (empty($field['value'])) unset(current($_POST));		}// $test case is all of the fields posted by my HTML form.	$testcase = array("address", "phone", "email", "address", "city", "state", "zip");	$postkeys = array_keys($_POST);	$missingfields = array_diff($testcase, $postkeys);	print_r $missingfields;}