WP Fastest Cache 1.4.3

Does WP Fastest Cache work with WordPress 6.9 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: 140.2 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.054 seconds
The average page load time increased by this amount after activating the plugin.

Environment
WordPress version6.9
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 1,000,000+
WordPress.org page https://wordpress.org/plugins/wp-fastest-cache/
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Pages 3

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=wp-fastest-cache%2FwpFastestCache.php&plugin_status=all&paged=1&s&_wpnonce=dad3ee9192
Aspect after-activation
HTTP status 200
Load time 0.444 s
Memory usage 3.88 MiB
JS errors None
Resource errors None

WP Fastest Cache

Page screenshot: WP Fastest Cache
URL /wp-admin/admin.php?page=wpfastestcacheoptions
Aspect menu-item
HTTP status 200
Load time 0.640 s
Memory usage 3.92 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 0.278 s
Memory usage 4.23 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.540 s0.393 s-0.147 s3.78 MiB3.93 MiB+ 154.12 KiB
/wp-admin/edit.php0.386 s0.322 s-0.064 s3.78 MiB3.92 MiB+ 141.3 KiB
/wp-admin/post-new.php0.828 s1.446 s+0.618 s6.31 MiB6.48 MiB+ 176.44 KiB
/wp-admin/upload.php0.460 s0.566 s+0.106 s3.74 MiB3.86 MiB+ 124.2 KiB
/wp-admin/options-writing.php0.350 s0.342 s-0.008 s3.71 MiB3.84 MiB+ 128.2 KiB
/wp-admin/media-new.php0.516 s0.356 s-0.160 s3.7 MiB3.84 MiB+ 136.39 KiB
/wp-admin/edit-tags.php?taxonomy=category0.339 s0.340 s+0.001 s3.72 MiB3.86 MiB+ 146.75 KiB
/wp-admin/post-new.php?post_type=page0.694 s0.924 s+0.230 s6.3 MiB6.47 MiB+ 172.55 KiB
/wp-admin/options-discussion.php0.341 s0.458 s+0.117 s3.71 MiB3.84 MiB+ 124.69 KiB
/wp-admin/edit-comments.php0.394 s0.375 s-0.019 s3.73 MiB3.86 MiB+ 124.2 KiB
/0.311 s0.233 s-0.078 s4.12 MiB4.23 MiB+ 113.38 KiB
Average 0.469 s0.523 s+0.054 s4.24 MiB4.37 MiB+ 140.2 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
PO File
Language % Lines of code Comment lines Files
PHP43.9%9,8701,21735
PO File43.1%9,6855,10331
CSS6.6%1,488235
JavaScript4.5%1,015239
HTML1.3%29608
SVG0.5%10635
Total 22,460 6,369 93

PHP Code Analysis | More results »

Lines of code 7,953
Total complexity 2,106
Median class complexity 61.5
Median method complexity 4.0
Most complex class WpFastestCache
Most complex function WpFastestCacheAdmin::optionsPage()
Classes 14
Methods 277
Functions 7

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.

No new entries found.

PHP Error Log 4 lines

[02-Dec-2025 21:07:06 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:07:06 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:07:16 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:07:16 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
See also: All tests for this plugin, How to Hide the "WP Fastest Cache" Admin Menu