MC4WP: Mailchimp for WordPress 4.9.18

Does MC4WP: Mailchimp for WordPress work with WordPress 6.6.2 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
No PHP errors, warnings or notices
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Looks good! No problems were detected.
Performance

Memory usage: 197.73 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 version6.6.2
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 2,000,000+
WordPress.org page https://wordpress.org/plugins/mailchimp-for-wp/
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Pages 8

Plugins ‹ Test site — WordPress

Page screenshot: Plugins ‹ Test site — WordPress
URL /wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL /wp-admin/plugins.php?action=activate&plugin=mailchimp-for-wp%2Fmailchimp-for-wp.php&plugin_status=all&paged=1&s&_wpnonce=dbec5a1bef
Aspect after-activation
HTTP status 200
Load time 0.284 s
Memory usage 3.82 MiB
JS errors None
Resource errors None

MC4WP

Page screenshot: MC4WP
URL /wp-admin/admin.php?page=mailchimp-for-wp
Aspect menu-item
HTTP status 200
Load time 0.250 s
Memory usage 3.65 MiB
JS errors None
Resource errors None

MC4WP → Form

Page screenshot: MC4WP → Form
URL /wp-admin/admin.php?page=mailchimp-for-wp-forms&view=add-form
Requested URL /wp-admin/admin.php?page=mailchimp-for-wp-forms
Aspect menu-item
HTTP status 200
Load time 0.246 s
Memory usage 3.65 MiB
JS errors None
Resource errors None

MC4WP → Integrations

Page screenshot: MC4WP → Integrations
URL /wp-admin/admin.php?page=mailchimp-for-wp-integrations
Aspect menu-item
HTTP status 200
Load time 0.223 s
Memory usage 3.65 MiB
JS errors None
Resource errors None

MC4WP → Other

Page screenshot: MC4WP → Other
URL /wp-admin/admin.php?page=mailchimp-for-wp-other
Aspect menu-item
HTTP status 200
Load time 0.201 s
Memory usage 3.65 MiB
JS errors None
Resource errors None

MC4WP → Add-ons

Page screenshot: MC4WP → Add-ons
URL /wp-admin/admin.php?page=mailchimp-for-wp-extensions
Aspect menu-item
HTTP status 200
Load time 0.180 s
Memory usage 3.65 MiB
JS errors None
Resource errors None

Test site – Just another WordPress site

Page screenshot: Test site – Just another WordPress site
URL /
Aspect front-page
HTTP status 200
Load time 0.203 s
Memory usage 3.49 MiB
JS errors None
Resource errors None

Widgets ‹ Test site — WordPress

Page screenshot: Widgets ‹ Test site — WordPress
URL /wp-admin/widgets.php
Aspect new-sidebar-widgets
HTTP status 200
Load time 2.190 s
Memory usage 5.81 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.391 s0.370 s-0.021 s3.47 MiB3.66 MiB+ 196.42 KiB
/wp-admin/edit.php0.226 s0.217 s-0.009 s3.54 MiB3.73 MiB+ 193.88 KiB
/wp-admin/post-new.php0.855 s0.693 s-0.162 s5.75 MiB5.95 MiB+ 205.85 KiB
/wp-admin/upload.php0.606 s0.583 s-0.023 s3.49 MiB3.66 MiB+ 176.84 KiB
/wp-admin/options-writing.php0.250 s0.230 s-0.020 s3.41 MiB3.64 MiB+ 239.64 KiB
/wp-admin/media-new.php0.270 s0.228 s-0.042 s3.4 MiB3.64 MiB+ 253.02 KiB
/wp-admin/edit-tags.php?taxonomy=category0.217 s0.220 s+0.003 s3.47 MiB3.67 MiB+ 199.7 KiB
/wp-admin/post-new.php?post_type=page0.619 s0.588 s-0.031 s5.75 MiB5.94 MiB+ 201.48 KiB
/wp-admin/options-discussion.php0.251 s0.276 s+0.025 s3.41 MiB3.64 MiB+ 241.33 KiB
/wp-admin/edit-comments.php0.283 s0.370 s+0.087 s3.49 MiB3.66 MiB+ 176.83 KiB
/0.559 s0.261 s-0.298 s3.4 MiB3.49 MiB+ 90.03 KiB
Average 0.412 s0.367 s-0.045 s3.87 MiB4.06 MiB+ 197.73 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
Markdown
Language % Lines of code Comment lines Files
PHP87.9%8,6265,024122
Markdown10.4%1,01602
SVG1.0%9513
XML0.4%4401
JavaScript0.3%3108
CSS0.0%404
Total 9,816 5,025 140

PHP Code Analysis | More results »

Lines of code 6,857
Total complexity 1,295
Median class complexity 13.0
Median method complexity 1.0
Most complex class MC4WP_API_V3
Most complex function MC4WP_List_Data_Mapper::map_list()
Classes 63
Methods 510
Functions 48

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 4

Custom Post Types 1

ID Name
mc4wp-formMailchimp Sign-up Forms

Sidebar Widgets 1

ID Name
mc4wp_form_widgetMailchimp Sign-Up Form

PHP Error Log

The log file is empty.

See also: All tests for this plugin, How to Hide MC4WP: Mailchimp for WordPress Admin Menus