51Degrees 4.5.11

Does 51Degrees work with WordPress 6.9.4 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
4PHP deprecation warnings
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 168.5 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.059 seconds
The average page load time increased by this amount after activating the plugin.

Environment
WordPress version6.9.4
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 20+
WordPress.org page https://wordpress.org/plugins/51degrees-optimize-by-device-location/
Badges

WordPress compatibility badge PHP compatibility badge

Get badge code

Pages 9

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=51degrees-optimize-by-device-location%2Ffiftyonedegrees.php&plugin_status=all&paged=1&s&_wpnonce=2e1744c1ea
Aspect after-activation
HTTP status 200
Load time 0.421 s
Memory usage 3.9 MiB
JS errors None
Resource errors None

Settings → 51Degrees

Page screenshot: Settings → 51Degrees
URL /wp-admin/options-general.php?page=51Degrees
Aspect menu-item
HTTP status 200
Load time 0.271 s
Memory usage 3.89 MiB
JS errors None
Resource errors None

Settings → 51Degrees → Google Analytics

Page screenshot: Settings → 51Degrees → Google Analytics
URL /wp-admin/options-general.php?page=51Degrees&tab=google-analytics
Aspect menu-item-tab
HTTP status 200
Load time 0.251 s
Memory usage 3.86 MiB
JS errors None
Resource errors None

Settings → 51Degrees → Properties

Page screenshot: Settings → 51Degrees → Properties
URL /wp-admin/options-general.php?page=51Degrees&tab=properties
Aspect menu-item-tab
HTTP status 200
Load time 0.254 s
Memory usage 3.86 MiB
JS errors None
Resource errors None

Settings → 51Degrees → Robots.txt

Page screenshot: Settings → 51Degrees → Robots.txt
URL /wp-admin/options-general.php?page=51Degrees&tab=robots
Aspect menu-item-tab
HTTP status 200
Load time 0.517 s
Memory usage 3.9 MiB
JS errors None
Resource errors None

Settings → 51Degrees → Suspicious

Page screenshot: Settings → 51Degrees → Suspicious
URL /wp-admin/options-general.php?page=51Degrees&tab=suspicious
Aspect menu-item-tab
HTTP status 200
Load time 0.375 s
Memory usage 3.87 MiB
JS errors None
Resource errors None

Settings → 51Degrees → Pmp

Page screenshot: Settings → 51Degrees → Pmp
URL /wp-admin/options-general.php?page=51Degrees&tab=pmp
Aspect menu-item-tab
HTTP status 200
Load time 0.245 s
Memory usage 3.86 MiB
JS errors None
Resource errors None

Settings → 51Degrees → Help

Page screenshot: Settings → 51Degrees → Help
URL /wp-admin/options-general.php?page=51Degrees&tab=help
Aspect menu-item-tab
HTTP status 200
Load time 1.610 s
Memory usage 3.86 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 0.238 s
Memory usage 4.15 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.411 s1.077 s+0.666 s3.78 MiB3.94 MiB+ 169.38 KiB
/wp-admin/edit.php0.352 s0.390 s+0.038 s3.78 MiB3.99 MiB+ 213.8 KiB
/wp-admin/post-new.php0.854 s0.982 s+0.128 s6.31 MiB6.57 MiB+ 266.2 KiB
/wp-admin/upload.php0.650 s0.477 s-0.173 s3.74 MiB3.89 MiB+ 156.47 KiB
/wp-admin/options-writing.php0.329 s0.319 s-0.010 s3.71 MiB3.86 MiB+ 156.05 KiB
/wp-admin/media-new.php0.511 s0.293 s-0.218 s3.7 MiB3.86 MiB+ 164.25 KiB
/wp-admin/edit-tags.php?taxonomy=category0.459 s0.293 s-0.166 s3.72 MiB3.89 MiB+ 174.61 KiB
/wp-admin/post-new.php?post_type=page0.685 s0.948 s+0.263 s6.3 MiB6.49 MiB+ 200.16 KiB
/wp-admin/options-discussion.php0.327 s0.515 s+0.188 s3.71 MiB3.86 MiB+ 152.24 KiB
/wp-admin/edit-comments.php0.319 s0.329 s+0.010 s3.73 MiB3.88 MiB+ 152.05 KiB
/0.273 s0.201 s-0.072 s4.11 MiB4.15 MiB+ 48.3 KiB
Average 0.470 s0.529 s+0.059 s4.24 MiB4.4 MiB+ 168.5 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.

PHP
Language % Lines of code Comment lines Files
PHP92.1%3,9431,26224
JavaScript4.1%177593
YAML1.6%70533
JSON1.2%5203
CSS1.0%4111
Total 4,283 1,375 34

PHP Code Analysis | More results »

Lines of code 3,146
Total complexity 607
Median class complexity 24.0
Median method complexity 3.0
Most complex class FiftyoneService
Most complex function FiftyOneDegreesRobotsTxt::enforce_crawler_redirect()
Classes 15
Methods 141
Functions 5

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 25

PHP Error Log 4 lines

[12-May-2026 05:25:10 UTC] PHP Deprecated:  stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /wp-includes/functions.wp-scripts.php on line 133
[12-May-2026 05:25:13 UTC] PHP Deprecated:  stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /wp-includes/functions.wp-scripts.php on line 133
[12-May-2026 05:25:18 UTC] PHP Deprecated:  stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /wp-includes/functions.wp-scripts.php on line 133
[12-May-2026 05:25:21 UTC] PHP Deprecated:  stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /wp-includes/functions.wp-scripts.php on line 133
See also: All tests for this plugin