<html>
<body>
<?php

// Dynamic function calls

function f()
{
	echo "I'm function f.<BR>\n";
}

function g()
{
        echo "I'm function g.<BR>\n";
}

$a = "f";
$a();
$a = "g";
$a();
$a = 'f';
$a();
$a = rand;
echo $a(1,100), "<BR>\n";
// $a = print; // NO
// $a("Hello world");
print("Hello world");
?>
</body>
</html>
