Report - Header Footer Code Manager 1.1.21

Does Header Footer Code Manager work with WordPress 5.9.3 and PHP 7.4.8? A smoke test was performed on 2022-04-21 21:55:28 UTC.

Summary

Errors

2	PHP warnings
2	PHP notices
2	JavaScript exceptions
	All test pages loaded successfully
	No resource errors

Performance

Memory usage: 42.47 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	5.9.3
PHP version	7.4.8
MySQL version	8.0.21
PHP memory limit	256M

Plugin Info

Last updated	2025-08-27T14:07:00+00:00
Active installs	600,000+
WordPress.org page	https://wordpress.org/plugins/header-footer-code-manager/
Badges	Get badge code

Pages 5

Plugins ‹ Test site — WordPress

URL	/wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL	/wp-admin/plugins.php?action=activate&plugin=header-footer-code-manager%2F99robots-header-footer-code-manager.php&plugin_status=all&paged=1&s&_wpnonce=cb05e7f589
Aspect	after-activation
HTTP status	200
Load time	0.458 s
Memory usage	3.35 MiB
JS errors	None
Resource errors	None

HFCM

URL	/wp-admin/admin.php?page=hfcm-list
Aspect	menu-item
HTTP status	200
Load time	0.219 s
Memory usage	3.26 MiB
JS errors	None
Resource errors	None

HFCM → Add New

URL	/wp-admin/admin.php?page=hfcm-create
Aspect	menu-item
HTTP status	200
Load time	0.601 s
Memory usage	3.48 MiB
JS errors	[ { "message": "TypeError: Cannot read properties of null (reading 'addEventListener')\n at HTMLDocument.<anonymous> (/wp-content/plugins/header-footer-code-manager/js/nnr-hfcm-showboxes.js?ver=5.9.3:150:51)\n at e (/wp-admin/load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-codemirror,underscore&ver=5.9.3:2:30038)\n at t (/wp-admin/load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-codemirror,underscore&ver=5.9.3:2:30340)", "trace": null, "code": null } ]
Resource errors	None

HFCM → Tools

URL	/wp-admin/admin.php?page=hfcm-tools
Aspect	menu-item
HTTP status	200
Load time	0.140 s
Memory usage	3.3 MiB
JS errors	`[ { "message": "TypeError: $(...).selectize is not a function\n at HTMLDocument.<anonymous> (/wp-content/plugins/header-footer-code-manager/js/nnr-hfcm-showboxes.js?ver=5.9.3:132:102)\n at e (/wp-admin/load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils&ver=5.9.3:2:30038)\n at t (/wp-admin/load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils&ver=5.9.3:2:30340)", "trace": null, "code": null } ]`
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.204 s
Memory usage	3.36 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.341 s	0.278 s	-0.063 s	3.37 MiB	3.39 MiB	+ 22.89 KiB
/wp-admin/edit.php	0.175 s	0.216 s	+0.041 s	3.4 MiB	3.42 MiB	+ 22.16 KiB
/wp-admin/post-new.php	0.802 s	0.943 s	+0.141 s	5.68 MiB	5.71 MiB	+ 27.23 KiB
/wp-admin/upload.php	0.353 s	0.298 s	-0.055 s	3.25 MiB	3.34 MiB	+ 94.34 KiB
/wp-admin/options-writing.php	0.274 s	0.262 s	-0.012 s	3.24 MiB	3.26 MiB	+ 14.21 KiB
/wp-admin/media-new.php	0.286 s	0.232 s	-0.054 s	3.23 MiB	3.32 MiB	+ 94.52 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.183 s	0.193 s	+0.010 s	3.27 MiB	3.35 MiB	+ 87.42 KiB
/wp-admin/post-new.php?post_type=page	0.648 s	0.657 s	+0.009 s	5.68 MiB	5.7 MiB	+ 22.82 KiB
/wp-admin/options-discussion.php	0.237 s	0.233 s	-0.004 s	3.22 MiB	3.25 MiB	+ 30.84 KiB
/wp-admin/edit-comments.php	0.208 s	0.212 s	+0.004 s	3.27 MiB	3.35 MiB	+ 85.78 KiB
/	0.275 s	0.228 s	-0.047 s	3.4 MiB	3.36 MiB	- 35.02 KiB
Average	0.344 s	0.341 s	-0.003 s	3.73 MiB	3.77 MiB	+ 42.47 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.

PO File

PHP

CSS

Language		%	Lines of code	Comment lines	Files
	PO File	54.0%	3,157	865	21
	PHP	32.4%	1,892	262	5
	CSS	10.3%	600	17	3
	JavaScript	3.4%	196	21	3
	SVG	0.0%	1	0	1
Total			5,846	1,165	33

PHP Code Analysis | More results »

Lines of code	1,389
Total complexity	257
Median class complexity	128.5
Median method complexity	2.0
Most complex class	NNR_HFCM
Most complex function	NNR_HFCM::hfcm_add_snippets()

Classes	2
Methods	49
Functions	0

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.

Database Tables 1

wp_hfcm_scripts

Options `wp_options` 2

hfcm_activation_date
hfcm_db_version

PHP Error Log 4 lines

[21-Apr-2022 21:55:47 UTC] PHP Notice:  Undefined variable: ex_posts in /wp-content/plugins/header-footer-code-manager/99robots-header-footer-code-manager.php on line 900
[21-Apr-2022 21:55:47 UTC] PHP Warning:  in_array() expects parameter 2 to be array, null given in /wp-content/plugins/header-footer-code-manager/99robots-header-footer-code-manager.php on line 900
[21-Apr-2022 21:55:47 UTC] PHP Notice:  Undefined variable: s_posts in /wp-content/plugins/header-footer-code-manager/99robots-header-footer-code-manager.php on line 904
[21-Apr-2022 21:55:47 UTC] PHP Warning:  in_array() expects parameter 2 to be array, null given in /wp-content/plugins/header-footer-code-manager/99robots-header-footer-code-manager.php on line 904

Header Footer Code Manager 1.1.21