[wp-trac] [WordPress Trac] #37699: Death to Globals Episode #1: A Registry, A Pattern

[WordPress Trac]

#37699: Death to Globals Episode #1: A Registry, A Pattern
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 Reporter:  wonderboymusic  |       Owner:
     Type:  enhancement     |      Status:  new
 Priority:  normal          |   Milestone:  4.7
Component:  General         |     Version:
 Severity:  normal          |  Resolution:
 Keywords:                  |     Focuses:
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Comment (by dnaber-de):

 Replying to [comment:9 jdgrimes]:
 > Replying to [comment:4 schlessera]:
 > > When evaluating whether interfaces are feasible, it should be noted
 that the current class name (`wpdb`) would be ideal as the first level of
 interface migration.
 > >
 > > So, I would recommend starting by creating an interface `wpdb`, and
 rename the current existing concrete implementation to `MySQLwpdb
 implements wpdb`. In this way, we have introduced an interface that can be
 used for typehinting, while not breaking any existing `instanceof` checks.
 >
 > This would still break any code that was doing `new wpdb()` though. Not
 sure how common that is, but there may be plugins that do it.

 Of course these improvements would require preliminary steps to take.
 Especially using semantic versioning that indicates backward incompatible
 changes.

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Ticket URL: <https://core.trac.wordpress.org/ticket/37699#comment:11>
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