[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+
-------------------------+--------------------------
 Reporter:  flixos90     |       Owner:  (none)
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  6.4
Component:  General      |     Version:
 Severity:  normal       |  Resolution:
 Keywords:  needs-patch  |     Focuses:  performance
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Changes (by johnbillion):

 * milestone:  Future Release => 6.4


Comment:

 It's a minor change however it's not urgent and it's an enhancement. If
 someone works on a PR we'll get it into 6.4.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57067#comment:12>
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