Codice PHP:
$mydb = sqlite_open("http://localhost:8888/xxx/ARGOMENTI.sqlite"); 

http://www.php.net/manual/en/function.sqlite-open.php


The filename of the SQLite database. If the file does not exist, SQLite will attempt to create it. PHP must have write permissions to the file if data is inserted, the database schema is modified or to create the database if it does not exist.
in soldoni vuol dire che la funzione sqlite_open non prende un url ma
un path al file system dove intendi salvare il db che deve avere i giusti permessi.