Nb : Of course you can add several other options like process the deleting of just a file , or set code if the Visitor send an empty form to database :
/*
if($nome_p=="" || $cognome=="" || $indirizzo=="" || $anno=="" || $mese=="" || $giorno=="" || $data=="" )
{echo"<script>alert('All fields have to be properly filled,\\nyou certainly forgot something , please check the form again !');history.go(-1);</script>";};
*/
So delete the above comments in the file : insabb.php
Code to delete a particular record @ ev/@/corso/index.php → an other example   ...

↓            
( file delete.php )