MC4WP: Mailchimp for WordPress 4.8

Does MC4WP: Mailchimp for WordPress work with WordPress 5.5 and PHP 7.2.16? A smoke test was performed on .

Summary

Errors
2PHP notices
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 295.77 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 version5.5
PHP version7.2.16
MySQL version8.0.15
PHP memory limit256M
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=ef9b8d9387
Aspect after-activation
HTTP status 200
Load time 0.503 s
Memory usage 4.29 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 0.363 s
Memory usage 4.31 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 0.179 s
Memory usage 4.25 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 0.184 s
Memory usage 4.32 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 0.176 s
Memory usage 4.33 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 0.161 s
Memory usage 4.23 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 0.227 s
Memory usage 3.82 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 0.808 s
Memory usage 4.28 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.435 s0.389 s-0.046 s3.96 MiB4.28 MiB+ 322.64 KiB
/wp-admin/edit.php0.222 s0.218 s-0.004 s3.99 MiB4.3 MiB+ 316.04 KiB
/wp-admin/post-new.php1.492 s1.867 s+0.375 s5.81 MiB6.15 MiB+ 349.69 KiB
/wp-admin/upload.php0.662 s0.406 s-0.256 s3.82 MiB4.13 MiB+ 315.27 KiB
/wp-admin/options-writing.php0.161 s0.145 s-0.016 s3.9 MiB4.12 MiB+ 222.57 KiB
/wp-admin/media-new.php0.193 s0.177 s-0.016 s3.8 MiB4.11 MiB+ 316.18 KiB
/wp-admin/edit-tags.php?taxonomy=category0.188 s0.180 s-0.008 s3.91 MiB4.21 MiB+ 307.62 KiB
/wp-admin/post-new.php?post_type=page1.311 s1.254 s-0.057 s5.8 MiB6.13 MiB+ 338.87 KiB
/wp-admin/options-discussion.php0.264 s0.237 s-0.027 s3.81 MiB4.12 MiB+ 316.8 KiB
/wp-admin/edit-comments.php0.199 s0.193 s-0.006 s3.91 MiB4.22 MiB+ 316.03 KiB
/0.368 s0.189 s-0.179 s3.69 MiB3.82 MiB+ 131.72 KiB
Average 0.500 s0.478 s-0.022 s4.22 MiB4.51 MiB+ 295.77 KiB

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 2 lines

[11-Aug-2020 19:18:56 UTC] PHP Notice:  register_rest_route was called <strong>incorrectly</strong>. The REST API route definition for <code>mc4wp/v1/form</code> is missing the required <code>permission_callback</code> argument. For REST API routes that are intended to be public, use <code>__return_true</code> as the permission callback. Please see <a href="https://wordpress.org/support/article/debugging-in-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 5.5.0.) in /wp-includes/functions.php on line 5225
[11-Aug-2020 19:18:59 UTC] PHP Notice:  register_rest_route was called <strong>incorrectly</strong>. The REST API route definition for <code>mc4wp/v1/form</code> is missing the required <code>permission_callback</code> argument. For REST API routes that are intended to be public, use <code>__return_true</code> as the permission callback. Please see <a href="https://wordpress.org/support/article/debugging-in-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 5.5.0.) in /wp-includes/functions.php on line 5225
See also: All tests for this plugin, How to Hide MC4WP: Mailchimp for WordPress Admin Menus