Report - Flexible Checkout Fields 4.1.30

Does Flexible Checkout Fields work with WordPress 6.9 and PHP 8.1.12? A smoke test was performed on 2025-12-03 09:33:50 UTC.

Summary

Errors

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

Performance

Memory usage: 23.73 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=776bb729e1
Aspect	after-activation
HTTP status	200
Load time	0.317 s
Memory usage	3.75 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.170 s
Memory usage	4.12 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.422 s	0.309 s	-0.113 s	3.77 MiB	3.8 MiB	+ 23.44 KiB
/wp-admin/edit.php	0.321 s	0.297 s	-0.024 s	3.78 MiB	3.8 MiB	+ 23.07 KiB
/wp-admin/post-new.php	0.737 s	0.676 s	-0.061 s	6.3 MiB	6.39 MiB	+ 91.47 KiB
/wp-admin/upload.php	0.404 s	0.427 s	+0.023 s	3.74 MiB	3.74 MiB	+ 6.03 KiB
/wp-admin/options-writing.php	0.494 s	0.276 s	-0.218 s	3.71 MiB	3.72 MiB	+ 10.02 KiB
/wp-admin/media-new.php	0.510 s	0.320 s	-0.190 s	3.7 MiB	3.72 MiB	+ 18.22 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.297 s	0.266 s	-0.031 s	3.71 MiB	3.74 MiB	+ 28.89 KiB
/wp-admin/post-new.php?post_type=page	0.630 s	0.617 s	-0.013 s	6.29 MiB	6.32 MiB	+ 22.99 KiB
/wp-admin/options-discussion.php	0.315 s	0.357 s	+0.042 s	3.71 MiB	3.72 MiB	+ 6.52 KiB
/wp-admin/edit-comments.php	0.294 s	0.316 s	+0.022 s	3.73 MiB	3.74 MiB	+ 6.02 KiB
/	0.278 s	0.171 s	-0.107 s	4.1 MiB	4.12 MiB	+ 24.37 KiB
Average	0.427 s	0.367 s	-0.061 s	4.23 MiB	4.25 MiB	+ 23.73 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 09:34:07 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 09:34:07 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 09:34:16 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
[03-Dec-2025 09:34:16 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

Flexible Checkout Fields 4.1.30