[wp-trac] [WordPress Trac] #53858: PHP 8.1: syntax error due to new 'readonly' property

[WordPress Trac]

#53858: PHP 8.1: syntax error due to new 'readonly' property
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 Reporter:  haosun             |       Owner:  (none)
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  5.9
Component:  General            |     Version:  4.9
 Severity:  normal             |  Resolution:
 Keywords:  needs-patch php81  |     Focuses:
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Comment (by knutsp):

 > On PHP < 8.1, I suppose the reason to add this alias is to keep
 consistent with other code, right?

 Because some theme, plugin or site specific code in the wild might use the
 (old) function when running PHP 5.6 - 8.0, it's needed not to cause a
 fatal error. We can't expect those devs to write PHP 8.1 compatible code
 in many, many years.

 Btw: I wonder if just enclosing the function in an if statement is enough.
 Maybe we have to include a file conditionally?

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Ticket URL: <https://core.trac.wordpress.org/ticket/53858#comment:11>
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