[wp-trac] [WordPress Trac] #43258: Output buffer template rendering and add filter for post-processing (e.g. caching, optimization)

WordPress Trac noreply at wordpress.org
Thu Oct 16 15:16:14 UTC 2025


#43258: Output buffer template rendering and add filter for post-processing (e.g.
caching, optimization)
-------------------------------------------------+-------------------------
 Reporter:  nextendweb                           |       Owner:
                                                 |  westonruter
     Type:  enhancement                          |      Status:  closed
 Priority:  normal                               |   Milestone:  6.9
Component:  General                              |     Version:
 Severity:  normal                               |  Resolution:  fixed
 Keywords:  has-patch has-unit-tests dev-        |     Focuses:  docs,
  feedback needs-dev-note                        |  performance
-------------------------------------------------+-------------------------

Comment (by jorbin):

 More info on the deprecation: https://github.com/php/php-
 src/commit/07f1cfd9b01ff0f3720c1a5580b9e263eec5fce1 and
 https://wiki.php.net/rfc/deprecations_php_8_4#:~:text=has%20been%20closed.-,Deprecate%20producing%20output%20in%20a%20user%20output%20handler,buffering%20function%20in%20an%20output%20handler%20will%20emit%20a%20Fatal%20Error.,-Deprecate%20producing%20output

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Ticket URL: <https://core.trac.wordpress.org/ticket/43258#comment:74>
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