[wp-trac] [WordPress Trac] #28315: update_user_meta() updates user with ID1 if WP_Error is passed as first argument

[WordPress Trac]

#28315: update_user_meta() updates user with ID1 if WP_Error is passed as first
argument
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 Reporter:  javorszky                |       Owner:
     Type:  defect (bug)             |      Status:  reopened
 Priority:  normal                   |   Milestone:  4.0
Component:  Options, Meta APIs       |     Version:  3.9.1
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:
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Comment (by SergeyBiryukov):

 `is_numeric()` would probably be a more appropriate check here than
 `is_scalar()`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/28315#comment:12>
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