1. Home
2. W3 Total Cache
3. 2.9.4

W3 Total Cache 2.9.4

Does W3 Total Cache work with WordPress 7.0 and PHP 8.1.12? A smoke test was performed on 2026-05-20 19:26:48 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	0.808 s	0.778 s	-0.030 s	3.92 MiB	4.62 MiB	+ 712.63 KiB
/wp-admin/edit.php	0.997 s	0.550 s	-0.447 s	3.98 MiB	4.6 MiB	+ 631.71 KiB
/wp-admin/post-new.php	1.899 s	1.856 s	-0.043 s	6.56 MiB	7.26 MiB	+ 724.66 KiB
/wp-admin/upload.php	1.231 s	0.678 s	-0.553 s	3.89 MiB	4.54 MiB	+ 666.66 KiB
/wp-admin/options-writing.php	0.610 s	0.616 s	+0.006 s	3.86 MiB	4.42 MiB	+ 571.03 KiB
/wp-admin/media-new.php	0.768 s	0.984 s	+0.216 s	3.85 MiB	4.42 MiB	+ 582.02 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.794 s	0.619 s	-0.175 s	3.86 MiB	4.46 MiB	+ 613.17 KiB
/wp-admin/post-new.php?post_type=page	1.874 s	1.559 s	-0.315 s	6.55 MiB	7.25 MiB	+ 716.19 KiB
/wp-admin/options-discussion.php	0.654 s	0.691 s	+0.037 s	3.86 MiB	4.44 MiB	+ 593.33 KiB
/wp-admin/edit-comments.php	0.594 s	0.534 s	-0.060 s	3.88 MiB	4.54 MiB	+ 667.23 KiB
/	0.352 s	0.228 s	-0.124 s	4.23 MiB	4.43 MiB	+ 206.17 KiB
Average	0.962 s	0.827 s	-0.135 s	4.4 MiB	5 MiB	+ 607.71 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	90.2%	115,194	53,004	632
	JavaScript	6.3%	8,002	1,163	40
	CSS	3.1%	4,019	93	19
	Java	0.2%	231	77	1
	Markdown	0.1%	111	0	3
	INI	0.1%	84	16	6
	XML	0.0%	57	4	1
	HTML	0.0%	7	0	1
	SVG	0.0%	4	0	4
Total			127,709	54,357	707

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 6 lines

[20-May-2026 19:27:18 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 />
[20-May-2026 19:27:18 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 />

---