[wp-trac] [WordPress Trac] #51894: PHP 8: Invalid functions added to hooks now cause fatals

[WordPress Trac]

#51894: PHP 8: Invalid functions added to hooks now cause fatals
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 Reporter:  dlh                            |       Owner:  (none)
     Type:  enhancement                    |      Status:  new
 Priority:  normal                         |   Milestone:  5.6
Component:  Plugins                        |     Version:
 Severity:  normal                         |  Resolution:
 Keywords:  php8 has-patch has-unit-tests  |     Focuses:
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Comment (by TimothyBlynJacobs):

 Has this been benched?

 Separately, I don't really understand the motivation for this change. This
 is a clear programming error that isn't likely to vary at runtime. The
 function is either defined, or isn't defined. Unlike the typesafe hook
 issues, it would be highly unlikely for a function to no longer be defined
 because of persisted data or other plugins being active. As such, we'd be
 adding a performance cost to the hottest code path in WordPress to catch a
 quite unlikely event.

 Additionally, this is something that Recovery Mode should be able to let
 the site owner recover from.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51894#comment:10>
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