(PHP 5 < 5.4.0, sqlite >= 1.0.0)
Registers a "regular" User Defined Function for use in SQL statements
void sqlite_create_function ( resource $dbhandle, string $function_name, callable $callback [, int $num_args = -1 ] )
Object oriented style (method):
public void SQLiteDatabase::createFunction ( string $function_name , callable $callback [, int $num_args = -1 ] )
sqlite_create_function() allows you to register a