Report - Flexible Checkout Fields 4.1.29

Does Flexible Checkout Fields work with WordPress 6.9 and PHP 8.1.12? A smoke test was performed on 2025-12-03 01:04:12 UTC.

Summary

Errors

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

Performance

Memory usage: 24.36 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
PHP version	8.1.12
MySQL version	10.6.10
PHP memory limit	512M

Plugin Info

Last updated	2026-03-07T03:07:00+00:00
Active installs	80,000+
WordPress.org page	https://wordpress.org/plugins/flexible-checkout-fields/
Badges	Get badge code

Pages 2

Plugins ‹ Test site — WordPress

URL	/wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL	/wp-admin/plugins.php?action=activate&plugin=flexible-checkout-fields%2Fflexible-checkout-fields.php&plugin_status=all&paged=1&s&_wpnonce=1a1643596f
Aspect	after-activation
HTTP status	200
Load time	0.417 s
Memory usage	3.76 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.231 s
Memory usage	4.14 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.564 s	0.372 s	-0.192 s	3.78 MiB	3.8 MiB	+ 24.24 KiB
/wp-admin/edit.php	0.434 s	0.346 s	-0.088 s	3.78 MiB	3.81 MiB	+ 23.88 KiB
/wp-admin/post-new.php	0.995 s	0.800 s	-0.195 s	6.31 MiB	6.4 MiB	+ 92.27 KiB
/wp-admin/upload.php	0.569 s	0.539 s	-0.030 s	3.74 MiB	3.75 MiB	+ 6.84 KiB
/wp-admin/options-writing.php	0.386 s	0.351 s	-0.035 s	3.71 MiB	3.72 MiB	+ 10.83 KiB
/wp-admin/media-new.php	0.600 s	0.418 s	-0.182 s	3.7 MiB	3.72 MiB	+ 19.02 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.390 s	0.354 s	-0.036 s	3.72 MiB	3.74 MiB	+ 29.7 KiB
/wp-admin/post-new.php?post_type=page	0.819 s	0.817 s	-0.002 s	6.3 MiB	6.32 MiB	+ 23.8 KiB
/wp-admin/options-discussion.php	0.486 s	1.065 s	+0.579 s	3.71 MiB	3.72 MiB	+ 7.33 KiB
/wp-admin/edit-comments.php	0.421 s	0.596 s	+0.175 s	3.73 MiB	3.74 MiB	+ 6.83 KiB
/	0.349 s	0.238 s	-0.111 s	4.12 MiB	4.14 MiB	+ 23.19 KiB
Average	0.547 s	0.536 s	-0.011 s	4.24 MiB	4.26 MiB	+ 24.36 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

JavaScript

Language		%	Lines of code	Comment lines	Files
	PHP	84.3%	21,491	14,261	509
	JavaScript	9.4%	2,408	961	15
	JSON	3.9%	1,005	0	21
	CSS	2.1%	541	54	14
	SVG	0.2%	60	0	1
Total			25,505	15,276	560

PHP Code Analysis | More results »

Lines of code	7,516
Total complexity	1,515
Median class complexity	5.0
Median method complexity	1.0
Most complex class	Flexible_Checkout_Fields_Plugin
Most complex function	wpdesk_get_order_meta()

Classes	162
Methods	728
Functions	25

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

activation_plugin_flexible-checkout-fields/flexible-checkout-fields.php
plugin_activation_flexible-checkout-fields/flexible-checkout-fields.php

PHP Error Log 4 lines

[03-Dec-2025 01:04:36 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
[03-Dec-2025 01:04:36 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
[03-Dec-2025 01:04:47 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
[03-Dec-2025 01:04:47 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

Flexible Checkout Fields 4.1.29