Klaviyo 3.7.1
Does Klaviyo work with WordPress 6.8.3 and PHP 8.1.12? A smoke test was performed on .
Summary
Errors
| 6 | PHP deprecation warnings |
| No JavaScript exceptions | |
| All test pages loaded successfully | |
| No resource errors |
Performance
Memory usage: 57.5 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 version | 6.8.3 |
|---|---|
| PHP version | 8.1.12 |
| MySQL version | 10.6.10 |
| PHP memory limit | 512M |
Plugin Info
| Last updated | |
|---|---|
| Active installs | 100,000+ |
| WordPress.org page | https://wordpress.org/plugins/klaviyo/ |
| Badges |
|
Pages 5
Plugins ‹ Test site — WordPress
| URL | /wp-admin/plugins.php?plugin_status=all&paged=1&s |
|---|---|
| Requested URL | /wp-admin/plugins.php?action=activate&plugin=klaviyo%2Fklaviyo.php&plugin_status=all&paged=1&s&_wpnonce=ede912cbf8 |
| Aspect | after-activation |
| HTTP status | 200 |
| Load time | 0.304 s |
| Memory usage | 3.58 MiB |
| JS errors | None |
| Resource errors | None |
Klaviyo
| URL | /wp-admin/admin.php?page=klaviyo_settings |
|---|---|
| Aspect | menu-item |
| HTTP status | 200 |
| Load time | 0.184 s |
| Memory usage | 3.54 MiB |
| JS errors | None |
| Resource errors | None |
Klaviyo → Help
| URL | /wp-admin/admin.php?page=klaviyo_help |
|---|---|
| Aspect | menu-item |
| HTTP status | 200 |
| Load time | 0.165 s |
| Memory usage | 3.54 MiB |
| JS errors | None |
| Resource errors | None |
Test site – Just another WordPress site
| URL | / |
|---|---|
| Aspect | front-page |
| HTTP status | 200 |
| Load time | 0.189 s |
| Memory usage | 3.47 MiB |
| JS errors | None |
| Resource errors | None |
Widgets ‹ Test site — WordPress
| URL | /wp-admin/widgets.php |
|---|---|
| Aspect | new-sidebar-widgets |
| HTTP status | 200 |
| Load time | 1.527 s |
| Memory usage | 5.88 MiB |
| JS errors | None |
| Resource errors | None |
Benchmark
| URL | Load time | Memory usage | ||||
|---|---|---|---|---|---|---|
| Inactive | Active | Change | Inactive | Active | Change | |
| /wp-admin/index.php | 0.354 s | 0.289 s | -0.065 s | 3.51 MiB | 3.56 MiB | + 53.3 KiB |
| /wp-admin/edit.php | 0.215 s | 0.205 s | -0.010 s | 3.57 MiB | 3.62 MiB | + 50.95 KiB |
| /wp-admin/post-new.php | 0.831 s | 0.668 s | -0.163 s | 6.06 MiB | 6.18 MiB | + 124.86 KiB |
| /wp-admin/upload.php | 0.771 s | 0.593 s | -0.178 s | 3.52 MiB | 3.56 MiB | + 33.54 KiB |
| /wp-admin/options-writing.php | 0.233 s | 0.276 s | +0.043 s | 3.5 MiB | 3.54 MiB | + 37.53 KiB |
| /wp-admin/media-new.php | 0.271 s | 0.278 s | +0.007 s | 3.49 MiB | 3.54 MiB | + 45.73 KiB |
| /wp-admin/edit-tags.php?taxonomy=category | 0.200 s | 0.206 s | +0.006 s | 3.5 MiB | 3.56 MiB | + 56.4 KiB |
| /wp-admin/post-new.php?post_type=page | 0.617 s | 0.580 s | -0.037 s | 6.05 MiB | 6.17 MiB | + 120.38 KiB |
| /wp-admin/options-discussion.php | 0.289 s | 0.248 s | -0.041 s | 3.5 MiB | 3.54 MiB | + 34.03 KiB |
| /wp-admin/edit-comments.php | 0.237 s | 0.221 s | -0.016 s | 3.52 MiB | 3.56 MiB | + 33.53 KiB |
| / | 0.319 s | 0.202 s | -0.117 s | 3.43 MiB | 3.48 MiB | + 42.3 KiB |
| Average | 0.394 s | 0.342 s | -0.052 s | 3.97 MiB | 4.03 MiB | + 57.5 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.
| Language | % | Lines of code | Comment lines | Files | |
|---|---|---|---|---|---|
| PHP | 83.1% | 2,158 | 1,355 | 24 | |
| JavaScript | 9.4% | 245 | 82 | 6 | |
| CSS | 5.8% | 150 | 19 | 1 | |
| JSON | 1.3% | 34 | 0 | 1 | |
| SVG | 0.4% | 11 | 0 | 4 | |
| Total | 2,598 | 1,456 | 36 | ||
PHP Code Analysis | More results »
| Lines of code | 2,073 |
|---|---|
| Total complexity | 348 |
| Median class complexity | 11.0 |
| Median method complexity | 1.5 |
| Most complex class | WPKlaviyoAdmin |
| Most complex function | wck_build_cart_data() |
| Classes | 14 |
|---|---|
| Methods | 96 |
| Functions | 39 |
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
- klaviyo_activation_time
- widget_klaviyo_emailsignup_widget
- widget_klaviyo_embedemailsignup_widget
- woocommerce_klaviyo_version
Sidebar Widgets 2
| ID | Name |
|---|---|
| klaviyo_emailsignup_widget | Klaviyo: Legacy Email Sign Up |
| klaviyo_embedemailsignup_widget | Klaviyo: Email Sign Up |
PHP Error Log 6 lines
[30-Sep-2025 23:12:02 UTC] PHP Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-content/plugins/klaviyo/includes/class-wck-options.php on line 79
[30-Sep-2025 23:12:02 UTC] PHP Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-content/plugins/klaviyo/includes/class-wck-options.php on line 79
[30-Sep-2025 23:12:02 UTC] PHP Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-content/plugins/klaviyo/includes/class-wck-options.php on line 79
[30-Sep-2025 23:12:02 UTC] PHP Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-content/plugins/klaviyo/includes/class-wck-options.php on line 79
[30-Sep-2025 23:12:02 UTC] PHP Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-content/plugins/klaviyo/includes/class-wck-options.php on line 79
[30-Sep-2025 23:12:02 UTC] PHP Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-content/plugins/klaviyo/includes/class-wck-options.php on line 79