Source of param.php
<html>
<head>
<title>Param Old Man</title>
</head>
<body>
<h1>Param Old Man </h1>
<h3>Demonstrates use of function parameters</h3>
<?
print verse(1);
print chorus();
print verse(2);
print chorus();
print verse(3);
print chorus();
print verse(4);
print chorus();
function verse($stanza){
switch ($stanza){
case 1:
$place = "thumb";
break;
case 2:
$place = "shoe";
break;
case 3:
$place = "knee";
break;
case 4:
$place = "door";
break;
default:
$place = "I don't know where";
} // end switch
$output = <<<HERE
This old man, he played $stanza<br>
He played knick-knack on my $place<br><br>
HERE;
return $output;
} // end verse
function chorus(){
$output = <<<HERE
...with a knick-knack<br>
paddy-whack<br>
give a dog a bone<br>
this old man came rolling home<br>
<br><br>
HERE;
return $output;
} // end chorus
?>
</body>
</html>