[wp-trac] [WordPress Trac] #47524: Predefined value of param is wrong in \Walker_Nav_Menu::start_lvl

[WordPress Trac]

#47524: Predefined value of param is wrong in \Walker_Nav_Menu::start_lvl
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 Reporter:  trasweb       |       Owner:  SergeyBiryukov
     Type:  defect (bug)  |      Status:  reviewing
 Priority:  normal        |   Milestone:  5.3
Component:  Menus         |     Version:
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  docs
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Comment (by SergeyBiryukov):

 Initially I thought changing this would cause "Declaration must be
 compatible" errors in PHP 7+, but apparently this only happens when
 removing parameters in subclasses or making them required. In my testing,
 changing default parameter type is fine.

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Ticket URL: <https://core.trac.wordpress.org/ticket/47524#comment:4>
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