[wp-trac] [WordPress Trac] #58384: locate_template calls file_exists a lot

[WordPress Trac]

#58384: locate_template calls file_exists a lot
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 Reporter:  spacedmonkey  |       Owner:  (none)
     Type:  enhancement   |      Status:  new
 Priority:  high          |   Milestone:  Future Release
Component:  Themes        |     Version:  4.7
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  performance
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Comment (by costdev):

 Thanks for opening this ticket @spacedmonkey! Worth looking into for sure.

 **file_exists** results are cached by PHP:
  Note: The results of this function are cached. See `clearstatcache()` for
 more details.
  [https://www.php.net/manual/en/function.file-exists.php#refsect1-function
 .file-exists-notes Reference]

 So while this reduces the impact of filesystem calls, having a cache for
 the results of the `foreach()` loop may be useful here.

 Have you run any tests to see how much of a performance improvement a
 cache of these results brings?

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Ticket URL: <https://core.trac.wordpress.org/ticket/58384#comment:1>
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