PHP 5 - array() - Using is_array()

How to know if a variable is an array() or not?
Easy with the is_array() function.

Let's see an example of the is_array() function:

<?php
  $my = array();
  if (is_array($my))
    echo "This is an array().";
  else
    echo "This is not an array().";
?>

Result:

This is an array().