Question

Im not sure if this is possible. here is what i have

if ($_REQUEST[db]=="abcd"){   
    $result =$abcdsqli->query("SELECT * FROM ...");
}elseif ($_REQUEST[db]=="efgh"){   
    $result =$efghsqli-> ...
}

here is what i want

$result =$.$_REQUEST[db].sqli->query("SELECT * FROM ...");

Answer 1

Why do you need so many mysqli objects?

And using $_RESQUEST in your code so openly like that can lead to many many hacks on your site.

Just use one (one[1]) mysqli object.

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I advise to NOT USE THIS but this is what you want:

$sql = "{$_REQUEST['db']}sqli";
$$sql->query("SELECT * FROM ...");

So if $_REQUEST['db'] == 'abc' It would be doing:

$abcsqli->query("SELECT * FROM ...");