Report - ClusterCS Clear Cache 1.0.1

Does ClusterCS Clear Cache work with WordPress 7.0.2 and PHP 8.1.12? A smoke test was performed on 2026-07-29 21:02:05 UTC.

Summary

Errors

16	PHP fatal errors
	No JavaScript exceptions
	All test pages loaded successfully
	No resource errors

Performance

Memory usage: 18.04 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.053 seconds
The average page load time increased by this amount after activating the plugin.

Environment

WordPress version	7.0.2
PHP version	8.1.12
MySQL version	10.6.10
PHP memory limit	512M

Plugin Info

Last updated	2019-10-08T13:43:00+00:00
Active installs	<10
WordPress.org page	https://wordpress.org/plugins/clustercs-clear-cache/
Badges	Get badge code

Pages 3

Plugins ‹ Test site — WordPress

URL	/wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL	/wp-admin/plugins.php?action=activate&plugin=clustercs-clear-cache%2Fclustercs.php&plugin_status=all&paged=1&s&_wpnonce=21ad9403f1
Aspect	after-activation
HTTP status	200
Load time	0.567 s
Memory usage	3.91 MiB
JS errors	None
Resource errors	None

CCS Clear Cache 1

URL	/wp-admin/admin.php?page=cluster-cs-clear-cache-plugin
Aspect	menu-item
HTTP status	200
Load time	0.488 s
Memory usage	3.87 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.221 s
Memory usage	4.25 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.769 s	1.277 s	+0.508 s	3.92 MiB	3.95 MiB	+ 27.24 KiB
/wp-admin/edit.php	0.576 s	0.560 s	-0.016 s	3.98 MiB	4.01 MiB	+ 26.62 KiB
/wp-admin/post-new.php	2.109 s	1.525 s	-0.584 s	6.56 MiB	6.59 MiB	+ 30.28 KiB
/wp-admin/upload.php	0.698 s	0.997 s	+0.299 s	3.89 MiB	3.89 MiB	+ 5.81 KiB
/wp-admin/options-writing.php	0.530 s	0.593 s	+0.063 s	3.86 MiB	3.87 MiB	+ 9.8 KiB
/wp-admin/media-new.php	0.966 s	0.571 s	-0.395 s	3.85 MiB	3.87 MiB	+ 18 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.520 s	0.888 s	+0.368 s	3.86 MiB	3.89 MiB	+ 22.86 KiB
/wp-admin/post-new.php?post_type=page	1.435 s	1.535 s	+0.100 s	6.55 MiB	6.57 MiB	+ 25.8 KiB
/wp-admin/options-discussion.php	0.568 s	0.865 s	+0.297 s	3.86 MiB	3.87 MiB	+ 5.99 KiB
/wp-admin/edit-comments.php	0.544 s	0.527 s	-0.017 s	3.88 MiB	3.89 MiB	+ 5.8 KiB
/	0.282 s	0.243 s	-0.039 s	4.23 MiB	4.25 MiB	+ 20.22 KiB
Average	0.818 s	0.871 s	+0.053 s	4.41 MiB	4.42 MiB	+ 18.04 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

JavaScript

CSS

Language		%	Lines of code	Comment lines	Files
	PHP	47.2%	299	12	3
	JavaScript	23.9%	151	0	1
	CSS	22.4%	142	3	1
	Markdown	6.3%	40	0	1
	SVG	0.2%	1	0	1
Total			633	15	7

PHP Code Analysis | More results »

Lines of code	287
Total complexity	48
Median class complexity	48.0
Median method complexity	2.0
Most complex class	CLUSTER_CS_CLEAR_CACHE
Most complex function	CLUSTER_CS_CLEAR_CACHE::clear_cache_static()

Classes	1
Methods	16
Functions	0

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` 1

clear_error

PHP Error Log 112 lines

[29-Jul-2026 21:02:32 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:33 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:35 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:37 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:37 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:39 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:42 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:43 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:43 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:44 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:46 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:48 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:49 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:49 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:
#0 /wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#1 /wp-includes/plugin.php(522): WP_Hook->do_action()
#2 /wp-admin/admin-ajax.php(192): do_action()
#3 {main}
  thrown in /wp-includes/class-wp-hook.php on line 341
[29-Jul-2026 21:02:50 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method CLUSTER_CS_CLEAR_CACHE::check_cache_url() cannot be called statically in /wp-includes/class-wp-hook.php:341
Stack trace:

(+12 more lines)

ClusterCS Clear Cache 1.0.1