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Flexible Invoices for WooCommerce and WordPress 6.1.1

Does "Flexible Invoices for WooCommerce and WordPress" work with WordPress 6.8.3 and PHP 8.1.12? A smoke test was performed on 2025-10-30 16:51:26 UTC.

Summary

Pages 15

Plugins ‹ Test site — WordPress

Invoices

Invoices → Add New Invoice

Invoices → Reports

Invoices → Reports → KSeF

Invoices → Download

Invoices → Settings

Invoices → Settings → Documents

Invoices → Settings → Currencies

Invoices → Settings → Tax rates

Invoices → Settings → Invoice Template

Invoices → Settings → Advanced Sending

Invoices → Start Here

Test site – Just another WordPress site

Dashboard ‹ Test site — WordPress

Benchmark

URL	Load time			Memory usage
	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.384 s	0.594 s	+0.210 s	3.51 MiB	4.2 MiB	+ 713.37 KiB
/wp-admin/edit.php	0.216 s	0.323 s	+0.107 s	3.57 MiB	4.22 MiB	+ 668.1 KiB
/wp-admin/post-new.php	0.825 s	1.116 s	+0.291 s	6.06 MiB	6.87 MiB	+ 823.13 KiB
/wp-admin/upload.php	0.768 s	0.569 s	-0.199 s	3.52 MiB	4.15 MiB	+ 639.08 KiB
/wp-admin/options-writing.php	0.249 s	0.356 s	+0.107 s	3.5 MiB	4.14 MiB	+ 658.59 KiB
/wp-admin/media-new.php	0.285 s	0.320 s	+0.035 s	3.49 MiB	4.14 MiB	+ 666.79 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.195 s	0.318 s	+0.123 s	3.5 MiB	4.16 MiB	+ 671.43 KiB
/wp-admin/post-new.php?post_type=page	0.753 s	0.772 s	+0.019 s	6.05 MiB	6.85 MiB	+ 818.65 KiB
/wp-admin/options-discussion.php	0.284 s	0.405 s	+0.121 s	3.5 MiB	4.14 MiB	+ 655.72 KiB
/wp-admin/edit-comments.php	0.251 s	0.271 s	+0.020 s	3.52 MiB	4.16 MiB	+ 654.75 KiB
/	0.323 s	0.375 s	+0.052 s	3.43 MiB	3.92 MiB	+ 501.57 KiB
Average	0.412 s	0.493 s	+0.081 s	3.97 MiB	4.63 MiB	+ 679.2 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.

Language		%	Lines of code	Comment lines	Files
	PHP	90.4%	106,468	34,600	1,167
	JavaScript	4.6%	5,466	1,022	119
	CSS	2.6%	3,045	112	30
	JSON	2.4%	2,854	0	55
Total			117,833	35,734	1,371

PHP Code Analysis | More results »

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 24

• activation_plugin_flexible-invoices/flexible-invoices.php
• fi_templatept_rewrite_rules_flushed
• inspire_invoices_correction_number_prefix
• inspire_invoices_correction_number_reset_type
• inspire_invoices_correction_number_suffix
• inspire_invoices_correction_start_number
• inspire_invoices_correction_type
• inspire_invoices_currency
• inspire_invoices_default_values
• inspire_invoices_invoice_number_prefix
• inspire_invoices_invoice_number_reset_type
• inspire_invoices_invoice_number_suffix
• inspire_invoices_invoice_start_number
• inspire_invoices_proforma_number_prefix
• inspire_invoices_proforma_number_reset_type
• inspire_invoices_proforma_number_suffix
• inspire_invoices_proforma_start_number
• inspire_invoices_settings_upgrade
• inspire_invoices_tax
• inspire_invoices_tax_updated
• inspire_invoices_woocommerce_add_invoice_ask_field
• inspire_invoices_woocommerce_add_nip_field
• inspire_invoices_woocommerce_nip_label
• sample_fi_templates_posts_added

User Metadata wp_usermeta 2

• screen_layout_inspire_invoice
• manageedit-inspire_invoicecolumnshidden

Custom Post Types 2

ID	Name
inspire_invoice	Invoices
fi_template	Templates

Meta Boxes

{
    "dashboard": {
        "flexible-invoices": {
            "title": "Grow your business with WP Desk",
            "context": "normal"
        }
    }
}

Capabilities 14

• read_flexible_invoice
• read_private_flexible_invoices
• edit_flexible_invoice
• edit_flexible_invoices
• edit_others_flexible_invoices
• edit_private_flexible_invoices
• edit_published_flexible_invoices
• delete_flexible_invoice
• delete_flexible_invoices
• delete_others_flexible_invoices
• delete_private_flexible_invoices
• delete_published_flexible_invoices
• publish_flexible_invoices
• download_flexible_invoices

PHP Error Log 17 lines

[30-Oct-2025 16:51:50 UTC] PHP Fatal error:  Uncaught Error: Call to undefined function wc_help_tip() in /wp-content/plugins/flexible-invoices/vendor_prefixed/wpdesk/wp-forms/templates/form-label.php:21
Stack trace:
#0 /wp-content/plugins/flexible-invoices/vendor_prefixed/wpdesk/wp-view/src/Renderer/SimplePhpRenderer.php(47): include()
#1 /wp-content/plugins/flexible-invoices/vendor_prefixed/wpdesk/flexible-invoices-core/templates/settings/form-field.php(19): WPDeskFIVendor\WPDesk\View\Renderer\SimplePhpRenderer->output_render()
#2 /wp-content/plugins/flexible-invoices/vendor_prefixed/wpdesk/wp-view/src/Renderer/SimplePhpRenderer.php(47): include('...')
#3 /wp-content/plugins/flexible-invoices/vendor_prefixed/wpdesk/wp-view/src/Renderer/SimplePhpRenderer.php(35): WPDeskFIVendor\WPDesk\View\Renderer\SimplePhpRenderer->output_render()
#4 /wp-content/plugins/flexible-invoices/vendor_prefixed/wpdesk/flexible-invoices-core/src/Invoices/Settings/Tabs/FormWithFieldsWPML.php(42): WPDeskFIVendor\WPDesk\View\Renderer\SimplePhpRenderer->render()
#5 /wp-content/plugins/flexible-invoices/vendor_prefixed/wpdesk/wp-forms/src/Form/FormWithFields.php(190): WPDeskFIVendor\WPDesk\Library\FlexibleInvoicesCore\Settings\Tabs\FormWithFieldsWPML->render_fields()
#6 /wp-content/plugins/flexible-invoices/vendor_prefixed/wpdesk/flexible-invoices-core/src/Invoices/Settings/Tabs/FieldSettingsTab.php(59): WPDeskFIVendor\WPDesk\Forms\Form\FormWithFields->render_form()
#7 /wp-content/plugins/flexible-invoices/vendor_prefixed/wpdesk/flexible-invoices-core/src/Invoices/Settings/Menus/GeneralSettingsMenu.php(120): WPDeskFIVendor\WPDesk\Library\FlexibleInvoicesCore\Settings\Tabs\FieldSettingsTab->output_render()
#8 /wp-includes/class-wp-hook.php(324): WPDeskFIVendor\WPDesk\Library\FlexibleInvoicesCore\Settings\Menus\GeneralSettingsMenu->render_page_action()
#9 /wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#10 /wp-includes/plugin.php(517): WP_Hook->do_action()
#11 /wp-admin/admin.php(260): do_action()
#12 /wp-admin/edit.php(10): require_once('...')
#13 {main}
  thrown in /wp-content/plugins/flexible-invoices/vendor_prefixed/wpdesk/wp-forms/templates/form-label.php on line 21

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