Report - W3 Total Cache 2.7.6

Does W3 Total Cache work with WordPress 6.6.2 and PHP 8.1.12? A smoke test was performed on 2024-09-23 16:56:42 UTC.

Summary

Errors

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

Performance

Memory usage: 542.83 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.030 seconds
The average page load time increased by this amount after activating the plugin.

Environment

WordPress version	6.6.2
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=0aa7724f85
Aspect	after-activation
HTTP status	200
Load time	0.533 s
Memory usage	4.3 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	0.683 s
Memory usage	4.22 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	0.315 s
Memory usage	4.22 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	0.304 s
Memory usage	4.22 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	0.309 s
Memory usage	4.22 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	0.371 s
Memory usage	4.22 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	0.313 s
Memory usage	4.22 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	0.322 s
Memory usage	4.22 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	0.298 s
Memory usage	4.22 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	0.318 s
Memory usage	4.22 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	0.300 s
Memory usage	4.22 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	0.285 s
Memory usage	4.22 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	0.339 s
Memory usage	4.22 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	0.298 s
Memory usage	4.22 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	0.293 s
Memory usage	4.22 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	0.255 s
Memory usage	4.22 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	0.301 s
Memory usage	4.22 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	0.310 s
Memory usage	4.22 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	0.296 s
Memory usage	4.22 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.291 s
Memory usage	3.62 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.368 s	0.470 s	+0.102 s	3.47 MiB	4.05 MiB	+ 586.75 KiB
/wp-admin/edit.php	0.300 s	0.232 s	-0.068 s	3.54 MiB	4.13 MiB	+ 608.14 KiB
/wp-admin/post-new.php	0.772 s	0.987 s	+0.215 s	5.75 MiB	6.39 MiB	+ 655.97 KiB
/wp-admin/upload.php	0.625 s	0.546 s	-0.079 s	3.49 MiB	4 MiB	+ 527.04 KiB
/wp-admin/options-writing.php	0.225 s	0.253 s	+0.028 s	3.41 MiB	3.97 MiB	+ 567.91 KiB
/wp-admin/media-new.php	0.249 s	0.295 s	+0.046 s	3.4 MiB	3.96 MiB	+ 581.29 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.198 s	0.250 s	+0.052 s	3.47 MiB	3.99 MiB	+ 527.96 KiB
/wp-admin/post-new.php?post_type=page	0.645 s	0.677 s	+0.032 s	5.75 MiB	6.38 MiB	+ 651.55 KiB
/wp-admin/options-discussion.php	0.257 s	0.393 s	+0.136 s	3.41 MiB	3.96 MiB	+ 569.59 KiB
/wp-admin/edit-comments.php	0.249 s	0.278 s	+0.029 s	3.49 MiB	4 MiB	+ 526.4 KiB
/	0.392 s	0.230 s	-0.162 s	3.45 MiB	3.62 MiB	+ 168.55 KiB
Average	0.389 s	0.419 s	+0.030 s	3.88 MiB	4.41 MiB	+ 542.83 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	90.4%	109,096	36,369	667
	JavaScript	6.0%	7,256	879	44
	CSS	3.1%	3,764	85	17
	Java	0.2%	231	77	1
	Markdown	0.1%	108	0	2
	INI	0.1%	84	16	6
	SVG	0.1%	66	1	5
	XML	0.0%	57	4	1
Total			120,662	37,431	743

PHP Code Analysis | More results »

Lines of code	85,074
Total complexity	19,366
Median class complexity	15.0
Median method complexity	2.0
Most complex class	wsdl
Most complex function	W3TCL\Minify\JSMinPlus::parseTree()

Classes	573
Methods	4,881
Functions	77

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_cached_notices
w3tc_extensions_hooks
w3tc_state

PHP Error Log 37 lines

[23-Sep-2024 16:57:02 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:03 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:03 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:04 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:05 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:06 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:06 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:07 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:07 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:08 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:08 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:09 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:09 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:10 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:10 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:11 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:11 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:12 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:12 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:13 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:13 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:14 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:14 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:15 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:15 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:16 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:16 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:17 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:17 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:18 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:19 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:19 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:20 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:21 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:22 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:22 UTC] PHP Deprecated:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php on line 1094
[23-Sep-2024 16:57:34 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 1094

W3 Total Cache 2.7.6

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 3

PHP Error Log 37 lines

Options `wp_options` 3