[wp-trac] [WordPress Trac] #37948: Use `WP_Site` class globally

[WordPress Trac]

#37948: Use `WP_Site` class globally
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 Reporter:  flixos90            |      Owner:
     Type:  enhancement         |     Status:  new
 Priority:  normal              |  Milestone:  Awaiting Review
Component:  Networks and Sites  |    Version:
 Severity:  normal              |   Keywords:  needs-patch
  Focuses:  multisite           |
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 The `WP_Site` class introduced in WordPress 4.5 is currently only being
 loaded in Multisite environments. However, there are several functions
 that return a "site-like" object on non-multisite installs as well. Given
 that every setup contains a site (or let's rather say, a regular setup
 ''is'' a site), I think it would make sense to make the `WP_Site` class
 compatible with regular setups and then load it globally.

 For reference see #37061

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Ticket URL: <https://core.trac.wordpress.org/ticket/37948>
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