Report - W3 Total Cache 2.6.1

Does W3 Total Cache work with WordPress 6.4.3 and PHP 8.1.12? A smoke test was performed on 2024-01-30 21:53:22 UTC.

Summary

Errors

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

Performance

Memory usage: 559.32 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	6.4.3
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=20b433178d
Aspect	after-activation
HTTP status	200
Load time	0.491 s
Memory usage	4.02 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	0.374 s
Memory usage	4.51 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	0.266 s
Memory usage	4.11 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	0.269 s
Memory usage	4.11 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	0.255 s
Memory usage	4.11 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	0.612 s
Memory usage	4.11 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	0.245 s
Memory usage	4.11 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	0.262 s
Memory usage	4.11 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	0.293 s
Memory usage	4.11 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	0.249 s
Memory usage	4.11 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	0.256 s
Memory usage	4.11 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	0.277 s
Memory usage	4.11 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	0.250 s
Memory usage	4.11 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	0.245 s
Memory usage	4.11 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	0.273 s
Memory usage	4.11 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	0.243 s
Memory usage	4.11 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	0.253 s
Memory usage	4.11 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	0.265 s
Memory usage	4.11 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	0.241 s
Memory usage	4.11 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.255 s
Memory usage	3.52 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.327 s	0.454 s	+0.127 s	3.38 MiB	3.96 MiB	+ 588.82 KiB
/wp-admin/edit.php	0.231 s	0.189 s	-0.042 s	3.41 MiB	4.04 MiB	+ 650.63 KiB
/wp-admin/post-new.php	1.006 s	1.052 s	+0.046 s	5.46 MiB	6.08 MiB	+ 637.95 KiB
/wp-admin/upload.php	0.714 s	0.459 s	-0.255 s	3.32 MiB	3.91 MiB	+ 603.41 KiB
/wp-admin/options-writing.php	0.236 s	0.200 s	-0.036 s	3.32 MiB	3.85 MiB	+ 549.09 KiB
/wp-admin/media-new.php	0.337 s	0.400 s	+0.063 s	3.3 MiB	3.84 MiB	+ 558.38 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.200 s	0.188 s	-0.012 s	3.31 MiB	3.89 MiB	+ 592.41 KiB
/wp-admin/post-new.php?post_type=page	0.580 s	0.698 s	+0.118 s	5.45 MiB	6.06 MiB	+ 621.54 KiB
/wp-admin/options-discussion.php	0.230 s	0.340 s	+0.110 s	3.3 MiB	3.85 MiB	+ 558.55 KiB
/wp-admin/edit-comments.php	0.502 s	0.218 s	-0.284 s	3.34 MiB	3.89 MiB	+ 571.08 KiB
/	0.293 s	0.198 s	-0.095 s	3.31 MiB	3.52 MiB	+ 220.67 KiB
Average	0.423 s	0.400 s	-0.024 s	3.72 MiB	4.26 MiB	+ 559.32 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	91.9%	123,213	47,926	832
	JavaScript	5.1%	6,818	755	44
	CSS	2.6%	3,515	131	21
	Java	0.2%	231	77	1
	Markdown	0.1%	108	0	2
	INI	0.1%	84	16	6
	SVG	0.0%	66	1	5
	XML	0.0%	57	4	1
Total			134,092	48,910	912

PHP Code Analysis | More results »

Lines of code	99,727
Total complexity	21,827
Median class complexity	12.0
Median method complexity	1.0
Most complex class	wsdl
Most complex function	W3TCL\Minify\JSMinPlus::parseTree()

Classes	719
Methods	6,043
Functions	127

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` 2

w3tc_extensions_hooks
w3tc_state

PHP Error Log 37 lines

[30-Jan-2024 21:53:40 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:42 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:42 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:43 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:43 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:44 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:44 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:45 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:45 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:46 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:46 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:47 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:47 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:48 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:48 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:49 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:49 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:50 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:50 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:51 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:51 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:52 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:52 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:53 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:53 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:54 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:54 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:55 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:55 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:56 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:57 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:57 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:58 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:58 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:59 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:53:59 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1038
[30-Jan-2024 21:54:11 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 1038

W3 Total Cache 2.6.1

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

Code Statistics

PHP Code Analysis | More results »

Additions

Options wp_options 2

PHP Error Log 37 lines

Options `wp_options` 2