[wp-trac] [WordPress Trac] #58458: Move the load of `array_keys` to a different level in the `WP_Hook` class

[WordPress Trac]

#58458: Move the load of `array_keys` to a different level in the `WP_Hook` class
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 Reporter:  bor0         |       Owner:  (none)
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  6.3
Component:  General      |     Version:  trunk
 Severity:  normal       |  Resolution:
 Keywords:  has-patch    |     Focuses:  performance
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Comment (by spacedmonkey):

 CC @flixos90 as the performance lead.

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Ticket URL: <https://core.trac.wordpress.org/ticket/58458#comment:3>
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