I can't edit the code style for php object property?

I've searched for a code style rule for object property. On the one hand I can't believe it's not customisable but I cannot find it.

I want to be able to put

     object -> property

Without the spaces being removed.

Is there a php code rule for this and, if there isn't, is there anything I can do to stop PhpStorm removing the spaces?

Many thanks.