Once form submitted disable permanently

[jpergega]

Hi

 

I have a form and I only want the user to use it only once. How can I disable this form permanently once been submitted? Thanks

 

<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">

<label>Unique Ref:<input name="reference" type="text" size="30"/>

<br><input type="submit" name="save" value="Save"/>

</form>

[Ingolme]

You'll need a way to identify the person who submitted the form.