Suche Mapupload System

<?php
//--------------[EINSTELLUNGEN]-----------------
$upload_dir = 'maps/';
//---
if(isset($_POST['uploadedfile']))
{
		move_uploaded_file($_FILES['uploadedfile']['tmp_name'],$upload_dir);


}
if(isset($_GET['page']) && $_GET['page'] == 'showfiles')
{
?>
<table border="1">
	<tr>
			<th>Mapname</th><th>Größe</th><th>Hinzugefügt am</th>
	</tr>
	<?php
		$dir = opendir($upload_dir);
		while($file = readdir($dir))
		{
			if(is_file($upload_dir.$file)) echo '<tr><td>'.$file.'</td><td>'.filesize($upload_dir.$file).' KB</td><td>'.date("d M Y H:m", filectime($upload_dir.$file)).'</td></tr>';
		}
	?>
</table>
<hr>
<form enctype="multipart/form-data" action="upload.php?page=showfiles" method="POST">
	<table border="0">
		<tr>
			<td>Datei: <input name="uploadedfile" type="file"></td>
		</tr>
		<tr>
			<td><input type="submit" value="Datei hochladen"></td>
		</tr>
	</table>
</form>
<?php
}
else header("Location: upload.php?page=showfiles");
?>

<?php
//--------------[EINSTELLUNGEN]-----------------
$upload_dir = 'maps/';
//---
if(isset($_GET['action']) && $_GET['action'] == 'upload')
{
	move_uploaded_file($_FILES['uploadedfile']['tmp_name'],$upload_dir. basename($_FILES['uploadedfile']['name']));


}
if(isset($_GET['page']) && $_GET['page'] == 'showfiles')
{
?>
<table border="1">
	<tr>
			<th>Mapname</th><th>Größe</th><th>Hinzugefügt am</th>
	</tr>
	<?php
		$dir = opendir($upload_dir);
		while($file = readdir($dir))
		{
			if(is_file($upload_dir.$file)) echo '<tr><td>'.$file.'</td><td>'.filesize($upload_dir.$file).' KB</td><td>'.date("d M Y H:m", filectime($upload_dir.$file)).'</td></tr>';
		}
	?>
</table>
<hr>
<form action="upload.php?page=showfiles&action=upload" enctype='multipart/form-data' method="POST">
	<table border="0">
		<tr>
			<td>Datei: <input name="uploadedfile" type="file"></td>
		</tr>
		<tr>
			<td><input type="submit" value="Datei hochladen"></td>
		</tr>
	</table>
</form>
<?php
}
else header("Location: upload.php?page=showfiles");
?>