Displaying the Type of a Variable : gettype Reflection PHP

 
<html>
<body>
<div>
<?php
    $testing; // declare without assigning
    print gettype( $testing ); 
    print "<br />";
    $testing = 5;
    print gettype( $testing ); 
    print "<br />";
    $testing = "five";
    print gettype( $testing ); 
    print "<br />";
    $testing = 5.0;
    print gettype( $testing ); 
    print "<br />";
    $testing = true;
    print gettype( $testing ); 
    print "<br />";
?>
</div>
</body>