Report - W3 Total Cache 2.2.9

Does W3 Total Cache work with WordPress 6.1.1 and PHP 8.1.12? A smoke test was performed on 2022-12-12 21:39:57 UTC.

Summary

Errors

37	PHP deprecation warnings
	No JavaScript exceptions
	All test pages loaded successfully
	No resource errors

Performance

Memory usage: 441.44 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: insignificant.
The plugin didn't make the site noticeably slower.

Environment

WordPress version	6.1.1
PHP version	8.1.12
MySQL version	10.6.10
PHP memory limit	512M

Plugin Info

Last updated	2026-06-24T18:05:00+00:00
Active installs	900,000+
WordPress.org page	https://wordpress.org/plugins/w3-total-cache/
Badges	Get badge code

Pages 20

Plugins ‹ Test site — WordPress

URL	/wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL	/wp-admin/plugins.php?action=activate&plugin=w3-total-cache%2Fw3-total-cache.php&plugin_status=all&paged=1&s&_wpnonce=8115e3491e
Aspect	after-activation
HTTP status	200
Load time	0.483 s
Memory usage	3.55 MiB
JS errors	None
Resource errors	None

Performance

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_dashboard
Aspect	menu-item
HTTP status	200
Load time	0.494 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Feature Showcase

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_feature_showcase
Aspect	menu-item
HTTP status	200
Load time	0.262 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → General Settings

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_general
Aspect	menu-item
HTTP status	200
Load time	0.263 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Page Cache

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_pgcache
Aspect	menu-item
HTTP status	200
Load time	0.254 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Minify

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_minify
Aspect	menu-item
HTTP status	200
Load time	0.259 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Database Cache

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_dbcache
Aspect	menu-item
HTTP status	200
Load time	0.255 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Object Cache

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_objectcache
Aspect	menu-item
HTTP status	200
Load time	0.272 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Browser Cache

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_browsercache
Aspect	menu-item
HTTP status	200
Load time	0.251 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Cache Groups

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_cachegroups
Aspect	menu-item
HTTP status	200
Load time	0.223 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → CDN

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_cdn
Aspect	menu-item
HTTP status	200
Load time	0.247 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Fragment Cache

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_fragmentcache
Aspect	menu-item
HTTP status	200
Load time	0.213 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Support

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_support
Aspect	menu-item
HTTP status	200
Load time	0.226 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → User Experience

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_userexperience
Aspect	menu-item
HTTP status	200
Load time	0.371 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Install

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_install
Aspect	menu-item
HTTP status	200
Load time	0.234 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Setup Guide

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Aspect	menu-item
HTTP status	200
Load time	0.179 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → About

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_about
Aspect	menu-item
HTTP status	200
Load time	0.205 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Extensions

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_extensions
Aspect	menu-item
HTTP status	200
Load time	0.251 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Performance → Statistics

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_stats
Aspect	menu-item
HTTP status	200
Load time	0.236 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.243 s
Memory usage	3.13 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.304 s	0.419 s	+0.115 s	3.05 MiB	3.5 MiB	+ 463.44 KiB
/wp-admin/edit.php	0.194 s	0.213 s	+0.019 s	3.07 MiB	3.53 MiB	+ 462.23 KiB
/wp-admin/post-new.php	0.849 s	0.958 s	+0.109 s	4.97 MiB	5.51 MiB	+ 554.58 KiB
/wp-admin/upload.php	0.890 s	0.294 s	-0.596 s	2.99 MiB	3.46 MiB	+ 478.44 KiB
/wp-admin/options-writing.php	0.192 s	0.367 s	+0.175 s	2.99 MiB	3.38 MiB	+ 400.46 KiB
/wp-admin/media-new.php	0.303 s	0.263 s	-0.040 s	2.97 MiB	3.38 MiB	+ 426.63 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.203 s	0.186 s	-0.017 s	2.98 MiB	3.44 MiB	+ 467.59 KiB
/wp-admin/post-new.php?post_type=page	0.682 s	0.686 s	+0.004 s	4.96 MiB	5.49 MiB	+ 546.16 KiB
/wp-admin/options-discussion.php	0.236 s	0.225 s	-0.011 s	2.97 MiB	3.4 MiB	+ 430.3 KiB
/wp-admin/edit-comments.php	0.235 s	0.227 s	-0.008 s	3 MiB	3.42 MiB	+ 434.28 KiB
/	0.294 s	0.237 s	-0.057 s	2.94 MiB	3.13 MiB	+ 191.72 KiB
Average	0.398 s	0.370 s	-0.028 s	3.35 MiB	3.79 MiB	+ 441.44 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.

PHP

PO File

Language		%	Lines of code	Comment lines	Files
	PHP	57.8%	119,031	45,754	821
	PO File	37.8%	77,751	44,235	11
	JavaScript	3.0%	6,080	551	42
	CSS	1.2%	2,495	119	20
	Java	0.1%	231	77	1
	Markdown	0.1%	117	0	3
	INI	0.0%	84	16	6
	XML	0.0%	57	4	1
	SVG	0.0%	4	0	4
Total			205,850	90,756	909

PHP Code Analysis | More results »

Lines of code	96,103
Total complexity	21,264
Median class complexity	12.0
Median method complexity	1.0
Most complex class	wsdl
Most complex function	W3TCL\Minify\JSMinPlus::parseTree()

Classes	711
Methods	5,955
Functions	126

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` 3

w3tc_extensions_hooks
w3tc_generic_widgetservices
w3tc_state

PHP Error Log 37 lines

[12-Dec-2022 21:40:21 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:23 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:23 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:24 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:24 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:25 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:25 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:26 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:26 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:27 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:27 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:28 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:28 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:29 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:29 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:30 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:30 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:31 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:31 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:32 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:32 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:33 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:33 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:34 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:34 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:35 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:35 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:36 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:36 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:37 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:38 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:38 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:39 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:39 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:40 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:40 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066
[12-Dec-2022 21:40:49 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1066

W3 Total Cache 2.2.9

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 → Fragment Cache

Performance → Support

Performance → User Experience

Performance → Install

Performance → Setup Guide

Performance → About

Performance → Extensions

Performance → Statistics

Test site – Just another WordPress site

Benchmark

Code Statistics

PHP Code Analysis | More results »

Additions

Options wp_options 3

PHP Error Log 37 lines

Options `wp_options` 3