51Degrees 4.5.3
Does "51Degrees - Optimize by Device & Location" work with WordPress 6.9.1 and PHP 8.1.12? A smoke test was performed on .
Summary
Errors
| 4 | PHP deprecation warnings |
| No JavaScript exceptions | |
| All test pages loaded successfully | |
| No resource errors |
Performance
Memory usage: 53.83 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 | 6.9.1 |
|---|---|
| PHP version | 8.1.12 |
| MySQL version | 10.6.10 |
| PHP memory limit | 512M |
Plugin Info
| Last updated | |
|---|---|
| Active installs | 20+ |
| WordPress.org page | https://wordpress.org/plugins/51degrees-optimize-by-device-location/ |
| Badges |
|
Pages 6
Plugins ‹ Test site — WordPress
| URL | /wp-admin/plugins.php?plugin_status=all&paged=1&s |
|---|---|
| Requested URL | /wp-admin/plugins.php?action=activate&plugin=51degrees-optimize-by-device-location%2Ffiftyonedegrees.php&plugin_status=all&paged=1&s&_wpnonce=817119f069 |
| Aspect | after-activation |
| HTTP status | 200 |
| Load time | 0.396 s |
| Memory usage | 3.91 MiB |
| JS errors | None |
| Resource errors | None |
Settings → 51Degrees
| URL | /wp-admin/options-general.php?page=51Degrees |
|---|---|
| Aspect | menu-item |
| HTTP status | 200 |
| Load time | 0.275 s |
| Memory usage | 3.77 MiB |
| JS errors | None |
| Resource errors | None |
Settings → 51Degrees → Google Analytics
| URL | /wp-admin/options-general.php?page=51Degrees&tab=google-analytics |
|---|---|
| Aspect | menu-item-tab |
| HTTP status | 200 |
| Load time | 0.254 s |
| Memory usage | 3.74 MiB |
| JS errors | None |
| Resource errors | None |
Settings → 51Degrees → Properties
| URL | /wp-admin/options-general.php?page=51Degrees&tab=properties |
|---|---|
| Aspect | menu-item-tab |
| HTTP status | 200 |
| Load time | 0.259 s |
| Memory usage | 3.74 MiB |
| JS errors | None |
| Resource errors | None |
Settings → 51Degrees → Help
| URL | /wp-admin/options-general.php?page=51Degrees&tab=help |
|---|---|
| Aspect | menu-item-tab |
| HTTP status | 200 |
| Load time | 1.735 s |
| Memory usage | 3.74 MiB |
| JS errors | None |
| Resource errors | None |
Test site – Just another WordPress site
| URL | / |
|---|---|
| Aspect | front-page |
| HTTP status | 200 |
| Load time | 0.272 s |
| Memory usage | 4.14 MiB |
| JS errors | None |
| Resource errors | None |
Benchmark
| URL | Load time | Memory usage | ||||
|---|---|---|---|---|---|---|
| Inactive | Active | Change | Inactive | Active | Change | |
| /wp-admin/index.php | 0.494 s | 0.563 s | +0.069 s | 3.78 MiB | 3.84 MiB | + 64.95 KiB |
| /wp-admin/edit.php | 0.345 s | 0.319 s | -0.026 s | 3.78 MiB | 3.83 MiB | + 45.32 KiB |
| /wp-admin/post-new.php | 0.819 s | 0.946 s | +0.127 s | 6.31 MiB | 6.45 MiB | + 142.47 KiB |
| /wp-admin/upload.php | 0.614 s | 0.455 s | -0.159 s | 3.74 MiB | 3.79 MiB | + 48.65 KiB |
| /wp-admin/options-writing.php | 0.321 s | 0.468 s | +0.147 s | 3.71 MiB | 3.74 MiB | + 32.64 KiB |
| /wp-admin/media-new.php | 0.493 s | 0.249 s | -0.244 s | 3.7 MiB | 3.74 MiB | + 40.84 KiB |
| /wp-admin/edit-tags.php?taxonomy=category | 0.324 s | 0.295 s | -0.029 s | 3.72 MiB | 3.77 MiB | + 51.2 KiB |
| /wp-admin/post-new.php?post_type=page | 0.805 s | 0.720 s | -0.085 s | 6.3 MiB | 6.37 MiB | + 76.43 KiB |
| /wp-admin/options-discussion.php | 0.337 s | 0.396 s | +0.059 s | 3.71 MiB | 3.74 MiB | + 28.83 KiB |
| /wp-admin/edit-comments.php | 0.317 s | 0.309 s | -0.008 s | 3.73 MiB | 3.76 MiB | + 28.64 KiB |
| / | 0.267 s | 0.180 s | -0.087 s | 4.11 MiB | 4.14 MiB | + 32.19 KiB |
| Average | 0.467 s | 0.445 s | -0.021 s | 4.24 MiB | 4.29 MiB | + 53.83 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 | 88.2% | 1,947 | 750 | 13 | |
| JavaScript | 8.0% | 177 | 59 | 3 | |
| JSON | 1.9% | 43 | 0 | 2 | |
| CSS | 1.9% | 41 | 1 | 1 | |
| Total | 2,208 | 810 | 19 | ||
PHP Code Analysis | More results »
| Lines of code | 1,701 |
|---|---|
| Total complexity | 232 |
| Median class complexity | 19.5 |
| Median method complexity | 2.0 |
| Most complex class | Fiftyonedegrees_Google_Analytics |
| Most complex function | Fiftyonedegrees_Custom_Dimensions::prepare_items() |
| Classes | 8 |
|---|---|
| Methods | 69 |
| Functions | 3 |
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 2
- fiftyonedegrees_resource_key
- fiftyonedegrees_resource_key_pipeline
PHP Error Log 4 lines
[04-Mar-2026 10:37:48 UTC] PHP Deprecated: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /wp-includes/functions.wp-scripts.php on line 133
[04-Mar-2026 10:37:50 UTC] PHP Deprecated: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /wp-includes/functions.wp-scripts.php on line 133
[04-Mar-2026 10:37:54 UTC] PHP Deprecated: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /wp-includes/functions.wp-scripts.php on line 133
[04-Mar-2026 10:37:57 UTC] PHP Deprecated: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /wp-includes/functions.wp-scripts.php on line 133
See also: All tests for this plugin