Untitled

<?php
$myVariable = 'Hello, world!';
?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <script>
        var myVariable = '<?php echo $myVariable; ?>';
    </script>
  <body>
    <script>
        alert(myVariable); // should alert 'Hello, world!'
    </script>
  </body>
</html>