How to prevent db file from being created when opened via PHP PDO?

Question

PHP

$db = new PDO("sqlite:file1.db");
If there is no file1.db, PHP PDO will create an empty file. Except as an option:

if(!file_exists ("file1.db"))
{
    return;
}
$db = new PDO("sqlite:file1.db");

is there no other way to prevent the creation of an empty db file?

Answer 1

The constructor almost immediately calls sqlite_open, which says:
That is, no, there is no regular way, it seems at the level of the library itself. Or at least the way it is used from PDO.