<?php
$name = "もつに";
function greeting($name)
{
return "こんにちは、{$name}さん!\n";
}
?>
<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Hello PHP World!</title>
</head>
<body>
<?php echo greeting($name); ?>
</body>
</html>