<?php

require_once("_head.php");

mkheader("functions!", "#fafafa");

?>

  <body>

    <!-- ======================================================= -->
    <pre><?php

    function sum($this, $other=5) {
        return $this + $other;
    }

    print "I am human, I am.\n";

    $a = $_GET['a'] ? $_GET['a'] : 72 ;

    print "$a plus 5 is " . sum($a, 5) . ".\n";

    print "$a plus 5 is " . sum($a) . ".\n";

    ?></pre>


  </body>
</html>