$template = '<?php';
$template = '<'.'?'.'php'.'n';

<?php
    $template = '<?php';
    echo $template;
    $template = '<'.'?'.'php'.'n';
    echo $template;
?>

<?php<?phpn

<?php
    $template = '<?php';
?>
<script language="javascript">
    alert(<?php echo """.$template."""; ?>);
</script>

<?php

$template = '<?php';
echo htmlentities($template);

?>