Ребят вот код куда его вставить что бы он работал?
<?php
<!DOCTYPE html>
<html>
<head>
<title>Masteram.Us</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://codemirror.net/lib/codemirror.css" />
<script src="https://codemirror.net/lib/codemirror.js"></script>
<script src="https://codemirror.net/addon/edit/matchbrackets.js"></script>
<script src="https://codemirror.net/mode/htmlmixed/htmlmixed.js"></script>
<script src="https://codemirror.net/mode/xml/xml.js"></script>
<script src="https://codemirror.net/mode/javascript/javascript.js"></script>
<script src="https://codemirror.net/mode/css/css.js"></script>
<script src="https://codemirror.net/mode/clike/clike.js"></script>
<script src="https://codemirror.net/mode/php/php.js"></script>
</head>
<body>
<textarea id="code" name="code"></textarea>
<script>
var editor = CodeMirror.fromTextArea(document.getElementById("code"
, {
lineNumbers: true,
matchBrackets: true,
mode: "application/x-httpd-php",
indentUnit: 4,
indentWithTabs: true
});
</script>
</body>
</html>
?>