[wp-trac] [WordPress Trac] #44634: multisite: WP_User compatibility keys inacessible after switch_to_blog

[WordPress Trac]

#44634: multisite: WP_User compatibility keys inacessible after switch_to_blog
--------------------------+-----------------------------
 Reporter:  flaviozavan   |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Users         |    Version:  4.9.7
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Some WP_User attributes are accessed using $back_compat_keys and
 get_user_meta:

 https://core.trac.wordpress.org/browser/trunk/src/wp-includes/class-wp-
 user.php#L121
 https://core.trac.wordpress.org/browser/trunk/src/wp-includes/class-wp-
 user.php#L312

 $back_compat_keys is static and defined when the first WP_User is
 instantiated.
 This process hardcodes $wpdb->prefix into some keys (e.g. user_level),
 preventing it from functioning correctly after switch_to_blog().

 Additionally, unsetting any of these attributes for one user will unset it
 for all Users, due to $back_compat_keys being static:
 https://core.trac.wordpress.org/browser/trunk/src/wp-includes/class-wp-
 user.php#L374

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Ticket URL: <https://core.trac.wordpress.org/ticket/44634>
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