[wp-trac] [WordPress Trac] #49417: Users with spaces in their username cannot since PHP 7.4.2

[WordPress Trac]

#49417: Users with spaces in their username cannot since PHP 7.4.2
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 Reporter:  calin                   |      Owner:  (none)
     Type:  defect (bug)            |     Status:  new
 Priority:  normal                  |  Milestone:  Awaiting Review
Component:  Login and Registration  |    Version:
 Severity:  normal                  |   Keywords:
  Focuses:                          |
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 PHP 7.4.2 has this patch applied https://bugs.php.net/bug.php?id=78929 so
 it won't convert + (plus sign) in cookies to spaces anymore.

 Users with spaces in their username, will get a cookie like
 `wordpress_logged_in_b47606082058ec222999b86235b9c61d=with+spaces|15816..`
 and WordPress will do a database search for `with+spaces` username instead
 of `with spaces`. This results in the user not being able to log in.

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Ticket URL: <https://core.trac.wordpress.org/ticket/49417>
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