[wp-trac] [WordPress Trac] #64238: PHPStan code quality improvements for 7.0

[WordPress Trac]

#64238: PHPStan code quality improvements for 7.0
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 Reporter:  SergeyBiryukov    |      Owner:  (none)
     Type:  task (blessed)    |     Status:  new
 Priority:  normal            |  Milestone:  7.0
Component:  General           |    Version:
 Severity:  normal            |   Keywords:
  Focuses:  coding-standards  |
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 This ticket is for various code quality issues and improvements surfaced
 via PHPStan.

 Implementing PHPStan is tracked separately in #61175.

 Previously:

 - #63268 (6.9)
 - #52217 (6.8)
 - #51423 (6.2)

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Ticket URL: <https://core.trac.wordpress.org/ticket/64238>
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