Constant Contact Forms 2.18.0

Does "Constant Contact Forms for WordPress" work with WordPress 6.9.4 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
5PHP deprecation warnings
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 491.08 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 version6.9.4
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 20,000+
WordPress.org page https://wordpress.org/plugins/constant-contact-forms/
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Pages 14

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=constant-contact-forms%2Fconstant-contact-forms.php&plugin_status=all&paged=1&s&_wpnonce=b18fa66053
Aspect after-activation
HTTP status 200
Load time 0.483 s
Memory usage 4.32 MiB
JS errors None
Resource errors None

Contact form

Page screenshot: Contact form
URL /wp-admin/edit.php?post_type=ctct_forms
Aspect menu-item
HTTP status 200
Load time 0.415 s
Memory usage 4.28 MiB
JS errors None
Resource errors None

Contact form → Add new form

Page screenshot: Contact form → Add new form
URL /wp-admin/post-new.php?post_type=ctct_forms
Aspect menu-item
HTTP status 200
Load time 0.643 s
Memory usage 4.92 MiB
JS errors None
Resource errors None

Contact form → Lists

Page screenshot: Contact form → Lists
URL /wp-admin/edit.php?post_type=ctct_lists
Aspect menu-item
HTTP status 200
Load time 0.405 s
Memory usage 4.28 MiB
JS errors None
Resource errors None

Contact form → Connect Now

Page screenshot: Contact form → Connect Now
URL /wp-admin/edit.php?post_type=ctct_forms&page=ctct_options_connect
Aspect menu-item
HTTP status 200
Load time 0.545 s
Memory usage 4.2 MiB
JS errors None
Resource errors None

Contact form → Settings

Page screenshot: Contact form → Settings
URL /wp-admin/edit.php?post_type=ctct_forms&page=ctct_options_settings_general
Aspect menu-item
HTTP status 200
Load time 0.382 s
Memory usage 4.2 MiB
JS errors None
Resource errors None

Contact form → Settings → Styles

Page screenshot: Contact form → Settings → Styles
URL /wp-admin/edit.php?post_type=ctct_forms&page=ctct_options_settings_styles
Aspect menu-item-tab
HTTP status 200
Load time 0.391 s
Memory usage 4.2 MiB
JS errors None
Resource errors None

Contact form → Settings → Opt-in

Page screenshot: Contact form → Settings → Opt-in
URL /wp-admin/edit.php?post_type=ctct_forms&page=ctct_options_settings_optin
Aspect menu-item-tab
HTTP status 200
Load time 0.360 s
Memory usage 4.2 MiB
JS errors None
Resource errors None

Contact form → Settings → Spam control

Page screenshot: Contact form → Settings → Spam control
URL /wp-admin/edit.php?post_type=ctct_forms&page=ctct_options_settings_spam
Aspect menu-item-tab
HTTP status 200
Load time 0.366 s
Memory usage 4.2 MiB
JS errors None
Resource errors None

Contact form → Settings → Support

Page screenshot: Contact form → Settings → Support
URL /wp-admin/edit.php?post_type=ctct_forms&page=ctct_options_settings_support
Aspect menu-item-tab
HTTP status 200
Load time 0.357 s
Memory usage 4.2 MiB
JS errors None
Resource errors None

Contact form → Settings → Account

Page screenshot: Contact form → Settings → Account
URL /wp-admin/edit.php?post_type=ctct_forms&page=ctct_options_settings_auth
Aspect menu-item-tab
HTTP status 200
Load time 0.348 s
Memory usage 4.2 MiB
JS errors None
Resource errors None

Contact form → About

Page screenshot: Contact form → About
URL /wp-admin/edit.php?post_type=ctct_forms&page=ctct_options_about
Aspect menu-item
HTTP status 200
Load time 1.282 s
Memory usage 4.2 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 0.480 s
Memory usage 4.33 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 1.049 s
Memory usage 6.56 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.425 s0.469 s+0.044 s3.78 MiB4.26 MiB+ 488.87 KiB
/wp-admin/edit.php0.360 s0.329 s-0.031 s3.79 MiB4.28 MiB+ 502.48 KiB
/wp-admin/post-new.php0.867 s0.972 s+0.105 s6.31 MiB7.06 MiB+ 762.91 KiB
/wp-admin/upload.php0.641 s0.614 s-0.027 s3.74 MiB4.17 MiB+ 440.48 KiB
/wp-admin/options-writing.php0.313 s0.398 s+0.085 s3.72 MiB4.15 MiB+ 444.79 KiB
/wp-admin/media-new.php0.493 s0.340 s-0.153 s3.71 MiB4.15 MiB+ 452.98 KiB
/wp-admin/edit-tags.php?taxonomy=category0.429 s0.323 s-0.106 s3.72 MiB4.17 MiB+ 457.84 KiB
/wp-admin/post-new.php?post_type=page0.684 s0.724 s+0.040 s6.3 MiB7.04 MiB+ 756.41 KiB
/wp-admin/options-discussion.php0.336 s0.515 s+0.179 s3.72 MiB4.15 MiB+ 440.98 KiB
/wp-admin/edit-comments.php0.332 s0.353 s+0.021 s3.74 MiB4.17 MiB+ 440.79 KiB
/0.281 s0.198 s-0.083 s4.12 MiB4.33 MiB+ 213.39 KiB
Average 0.469 s0.476 s+0.007 s4.24 MiB4.72 MiB+ 491.08 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
PHP71.9%21,24114,142213
Markdown7.8%2,298017
Sass6.4%1,8948320
JavaScript6.1%1,81379930
CSS5.6%1,662154
JSON2.0%58807
SVG0.1%3426
XML0.1%1901
YAML0.0%601
Bourne Shell0.0%301
Total 29,558 15,041 300

PHP Code Analysis | More results »

Lines of code 10,352
Total complexity 2,038
Median class complexity 19.0
Median method complexity 2.0
Most complex class ConstantContact_Display
Most complex function ConstantContact_Process_Form::process_form()
Classes 41
Methods 528
Functions 74

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 7

Custom Post Types 2

ID Name
ctct_formsForms
ctct_listsLists

Sidebar Widgets 1

ID Name
ctct_formConstant Contact Form

Meta Boxes

{
    "ctct_lists": {
        "ctct_list_metabox": {
            "title": "List Information",
            "context": "normal"
        }
    },
    "ctct_forms": {
        "ctct_0_description_metabox": {
            "title": "Form description",
            "context": "normal"
        },
        "ctct_0_list_metabox": {
            "title": "Constant Contact lists",
            "context": "normal"
        },
        "ctct_1_optin_metabox": {
            "title": "Form options",
            "context": "normal"
        },
        "ctct_2_fields_metabox": {
            "title": "Form fields",
            "context": "normal"
        },
        "ctct_2_generated_metabox": {
            "title": "Embed shortcode",
            "context": "side"
        },
        "email_settings": {
            "title": "Email settings",
            "context": "side"
        },
        "ctct_1_custom_form_css_metabox": {
            "title": "Form design",
            "context": "side"
        },
        "ctct_1_custom_input_css_metabox": {
            "title": "Input design",
            "context": "side"
        },
        "ctct_3_reset_css_metabox": {
            "title": "Reset styles",
            "context": "side"
        }
    }
}

PHP Error Log 5 lines

[13-Apr-2026 18:23:11 UTC] PHP Deprecated:  strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-admin/admin-header.php on line 41
[13-Apr-2026 18:23:12 UTC] PHP Deprecated:  strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-admin/admin-header.php on line 41
[13-Apr-2026 18:23:13 UTC] PHP Deprecated:  strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-admin/admin-header.php on line 41
[13-Apr-2026 18:23:14 UTC] PHP Deprecated:  strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-admin/admin-header.php on line 41
[13-Apr-2026 18:23:15 UTC] PHP Deprecated:  strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-admin/admin-header.php on line 41
See also: All tests for this plugin, How to Hide Constant Contact Forms for WordPress Admin Menus and Meta Boxes