[wp-trac] [WordPress Trac] #41936: get_main_site_id ignores custom values of $current_site->blog_id

[WordPress Trac]

#41936: get_main_site_id ignores custom values of $current_site->blog_id
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 Reporter:  spacedmonkey              |       Owner:  flixos90
     Type:  defect (bug)              |      Status:  assigned
 Priority:  normal                    |   Milestone:  4.9
Component:  Networks and Sites        |     Version:  trunk
 Severity:  normal                    |  Resolution:
 Keywords:  has-unit-tests has-patch  |     Focuses:  multisite,
                                      |  performance
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Comment (by spacedmonkey):

 [https://core.trac.wordpress.org/attachment/ticket/41936/41936.4.diff
 41936.4.diff]

 Changes

 - Magic method returns int
 - blog_id is now cast to string
 - get_main_site_id now returns get_current_blog_id
 - Don't return early, on `pre_get_main_site_id` filter, check if not
 empty, to make sure it value is not a null value.

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Ticket URL: <https://core.trac.wordpress.org/ticket/41936#comment:6>
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