PHP isset() with multiple parameters

Question

I\'m trying to work with AJAX autocompletes and I am having a few problems with getting the two languages to work in synergy.

When I replace all the issets with only

Answer 1

Use the php's OR (||) logical operator for php isset() with multiple operator e.g

if (isset($_POST['room']) || ($_POST['cottage']) || ($_POST['villa'])) {

}