Marekdrtič to opravdu má

<?php
if(isset($_POST['sent']))
{
if(move_uploaded_file($_FILES["upload"]["tmp_name" ], "upload/" . $_FILES["upload"]["name"]))
{
echo "<script>alert('Úspěšně nahráno!');</script>";
echo "<a href='upload/'".$_FILES["upload"]["name"].">Jdi na soubor</a>";
}
else
{
echo "<script>alert('Něco se porouchalo!');</script>";
}
}
?>

<form method="POST" enctype="multipart/form-data">
<label>Soubor: </label><input type="file" name="upload"><br>
<input type="submit" name="sent" value="Uploadovat">
</form>