Report - W3 Total Cache 2.3.0

Does W3 Total Cache work with WordPress 6.1.1 and PHP 8.1.12? A smoke test was performed on 2023-02-14 16:15:26 UTC.

Summary

Errors

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

Performance

Memory usage: 446.92 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 21

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=cf320fcaa6
Aspect	after-activation
HTTP status	200
Load time	0.561 s
Memory usage	3.56 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	0.588 s
Memory usage	3.53 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	0.229 s
Memory usage	3.53 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	0.250 s
Memory usage	3.53 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	0.235 s
Memory usage	3.53 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	0.239 s
Memory usage	3.53 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	0.218 s
Memory usage	3.53 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	0.237 s
Memory usage	3.53 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	0.233 s
Memory usage	3.53 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	0.219 s
Memory usage	3.53 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	0.233 s
Memory usage	3.53 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	0.232 s
Memory usage	3.53 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	0.247 s
Memory usage	3.53 MiB
JS errors	None
Resource errors	None

Performance → Google PageSpeed

URL	/wp-admin/admin.php?page=w3tc_setup_guide
Requested URL	/wp-admin/admin.php?page=w3tc_pagespeed
Aspect	menu-item
HTTP status	200
Load time	0.223 s
Memory usage	3.53 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	0.300 s
Memory usage	3.53 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	0.254 s
Memory usage	3.53 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	0.200 s
Memory usage	3.53 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	0.239 s
Memory usage	3.53 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	0.248 s
Memory usage	3.53 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	0.216 s
Memory usage	3.53 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.272 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	0.321 s	0.438 s	+0.117 s	3.05 MiB	3.5 MiB	+ 467.88 KiB
/wp-admin/edit.php	0.205 s	0.219 s	+0.014 s	3.07 MiB	3.53 MiB	+ 466.66 KiB
/wp-admin/post-new.php	0.848 s	0.986 s	+0.138 s	4.97 MiB	5.52 MiB	+ 563.32 KiB
/wp-admin/upload.php	0.597 s	0.536 s	-0.061 s	2.99 MiB	3.46 MiB	+ 482.88 KiB
/wp-admin/options-writing.php	0.180 s	0.178 s	-0.002 s	2.99 MiB	3.38 MiB	+ 404.9 KiB
/wp-admin/media-new.php	0.302 s	0.256 s	-0.046 s	2.97 MiB	3.39 MiB	+ 431.06 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.198 s	0.215 s	+0.017 s	2.98 MiB	3.44 MiB	+ 472.03 KiB
/wp-admin/post-new.php?post_type=page	0.658 s	0.651 s	-0.007 s	4.96 MiB	5.5 MiB	+ 550.91 KiB
/wp-admin/options-discussion.php	0.212 s	0.211 s	-0.001 s	2.97 MiB	3.4 MiB	+ 434.74 KiB
/wp-admin/edit-comments.php	0.211 s	0.209 s	-0.002 s	3 MiB	3.44 MiB	+ 454.08 KiB
/	0.310 s	0.227 s	-0.083 s	2.94 MiB	3.13 MiB	+ 187.72 KiB
Average	0.367 s	0.375 s	+0.008 s	3.35 MiB	3.79 MiB	+ 446.92 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

Language		%	Lines of code	Comment lines	Files
	PHP	92.8%	119,351	46,137	805
	JavaScript	4.7%	6,062	636	40
	CSS	2.1%	2,756	112	20
	Java	0.2%	231	77	1
	Markdown	0.1%	117	0	3
	INI	0.1%	84	16	6
	XML	0.0%	57	4	1
	SVG	0.0%	4	0	4
Total			128,662	46,982	880

PHP Code Analysis | More results »

Lines of code	97,209
Total complexity	21,321
Median class complexity	12.0
Median method complexity	1.0
Most complex class	wsdl
Most complex function	W3TCL\Minify\JSMinPlus::parseTree()

Classes	708
Methods	5,944
Functions	123

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 39 lines

[14-Feb-2023 16:15:41 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:43 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:43 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:44 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:44 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:45 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:45 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:46 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:46 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:47 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:47 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:48 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:48 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:49 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:49 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:50 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:50 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:51 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:51 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:52 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:52 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:53 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:53 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:54 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:54 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:55 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:55 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:56 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:56 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:57 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:57 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:58 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:59 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:15:59 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:16:00 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:16:00 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:16:01 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:16:01 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1041
[14-Feb-2023 16:16:11 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 1041

W3 Total Cache 2.3.0

Summary

Pages 21

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 → Google PageSpeed

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 39 lines

Options `wp_options` 3