[wp-trac] [WordPress Trac] #57067: Replace certain `array_key_exists()` calls with `isset()` once PHP requirement is raised to 7.0+

[WordPress Trac]

#57067: Replace certain `array_key_exists()` calls with `isset()` once PHP
requirement is raised to 7.0+
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 Reporter:  flixos90          |       Owner:  flixos90
     Type:  enhancement       |      Status:  closed
 Priority:  normal            |   Milestone:  6.4
Component:  Themes            |     Version:
 Severity:  normal            |  Resolution:  fixed
 Keywords:  has-patch commit  |     Focuses:  performance
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Comment (by dmsnell):

 Just a note that it appears as though this commit [56345] broke the
 documentation-generator because it introduced syntax unsupported by the
 parser. Earmarking for the purpose of adding some CI step to ensure that
 changes don’t break important developer-facing features without letting
 someone know that.

 see also https://github.com/WordPress/phpdoc-parser/issues/199

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Ticket URL: <https://core.trac.wordpress.org/ticket/57067#comment:20>
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