[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 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.

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Ticket URL: <https://core.trac.wordpress.org/ticket/37699#comment:9>
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