php - Selecting a collection with a dot in its name -

i select collection using following method... assuming collection name "fantastic" in database called "somedb"

$conn = new mongo(); $fantastic_coll = $conn->somedb->fantastic; 

this has worked famously me long time. number of collections using has grown lot , i'm trying use dots in collection names organise them little more logically.

eg.

• store.items
• store.categories
• store.coupons
• events
• events.categories

this seems work fine in mongodb shell, not in php?

if try....

$conn = new mongo(); $store_coupons_coll = $conn->somedb->store.coupons; 

and try save documents collection doesn't me.

if instead use...

$conn = new mongo(); $store_coupons_coll = $conn->somedb->selectcollection('store.coupons'); 

everything works expected. right way it?

• if hope helps having same trouble.
• if not there short way write collection name?
• is using dots in collection name organisation wrong begin with?

the preferred way of doing with:

$collection = $conn->somedb->selectcollection( 'store.coupons' ); 

or if want:

$collection = $conn->selectcollection( 'somedb', 'store.coupons' );