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W3 Total Cache 2.8.14

Does W3 Total Cache work with WordPress 6.9 and PHP 8.1.12? A smoke test was performed on 2025-12-02 21:03:01 UTC.

Summary

Pages 20

Plugins ‹ Test site — WordPress

Performance

Performance → Feature Showcase

Performance → General Settings

Performance → Page Cache

Performance → Minify

Performance → Database Cache

Performance → Object Cache

Performance → Browser Cache

Performance → Cache Groups

Performance → CDN

Performance → Support

Performance → Google PageSpeed

Performance → User Experience

Performance → Install

Performance → Setup Guide

Performance → About

Performance → Extensions

Performance → Statistics

Test site – Just another WordPress site

Benchmark

URL	Load time			Memory usage
	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.381 s	0.490 s	+0.109 s	3.78 MiB	4.41 MiB	+ 652.4 KiB
/wp-admin/edit.php	0.361 s	0.305 s	-0.056 s	3.78 MiB	4.45 MiB	+ 682.21 KiB
/wp-admin/post-new.php	0.869 s	0.901 s	+0.032 s	6.31 MiB	7 MiB	+ 708.38 KiB
/wp-admin/upload.php	0.581 s	0.390 s	-0.191 s	3.74 MiB	4.37 MiB	+ 643.4 KiB
/wp-admin/options-writing.php	0.320 s	0.376 s	+0.056 s	3.71 MiB	4.29 MiB	+ 588.48 KiB
/wp-admin/media-new.php	0.529 s	0.375 s	-0.154 s	3.7 MiB	4.25 MiB	+ 558.03 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.319 s	0.314 s	-0.005 s	3.72 MiB	4.31 MiB	+ 610.31 KiB
/wp-admin/post-new.php?post_type=page	0.698 s	0.713 s	+0.015 s	6.3 MiB	6.96 MiB	+ 679.85 KiB
/wp-admin/options-discussion.php	0.345 s	0.499 s	+0.154 s	3.71 MiB	4.29 MiB	+ 590.48 KiB
/wp-admin/edit-comments.php	0.338 s	0.352 s	+0.014 s	3.73 MiB	4.34 MiB	+ 619.15 KiB
/	0.291 s	0.195 s	-0.096 s	4.12 MiB	4.32 MiB	+ 205.28 KiB
Average	0.457 s	0.446 s	-0.011 s	4.24 MiB	4.82 MiB	+ 594.36 KiB

Code Statistics

Note: Third-party libraries and minified JS/CSS files are excluded from these statistics where possible, so the numbers you see here may be lower than those reported by other tools.

Language		%	Lines of code	Comment lines	Files
	PHP	90.3%	111,721	51,896	632
	JavaScript	6.1%	7,527	986	40
	CSS	3.1%	3,857	85	19
	Java	0.2%	231	77	1
	Markdown	0.1%	147	0	4
	INI	0.1%	84	16	6
	SVG	0.1%	65	1	4
	XML	0.0%	57	4	1
	HTML	0.0%	7	0	1
Total			123,696	53,065	708

PHP Code Analysis | More results »

Additions

Things that the plugin adds to the site. This section is not intended to be comprehensive. The test tool only looks for a few specific types of added content.

Options wp_options 6

• w3tc_cached_notices
• w3tc_extensions_hooks
• w3tc_install_date
• w3tc_post_update_admin_tasks_ran_versions
• w3tc_post_update_generic_tasks_ran_versions
• w3tc_state

PHP Error Log 10 lines

[02-Dec-2025 21:03:20 UTC] W3 Total Cache environment exception: Edit file <strong>/wp-config.php</strong> and add next lines:<textarea style="height: 100px; width: 100%;">/** Enable W3 Total Cache */
define(&#039;WP_CACHE&#039;, true); // Added by W3 Total Cache
</textarea><br />
[02-Dec-2025 21:03:20 UTC] W3 Total Cache environment exception: Edit file <strong>/wp-config.php</strong> and add next lines:<textarea style="height: 100px; width: 100%;">/** Enable W3 Total Cache */
define(&#039;WP_CACHE&#039;, true); // Added by W3 Total Cache
</textarea><br />
[02-Dec-2025 21:03:43 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:03:43 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:03:53 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:03:53 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131

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