Developer Corner

15132 topics in this forum

1. Hide admin sidebar by default

   By bear, May 23
   • 8 replies
   • 419 views
   • 
   • DennisHermannsen
   • Friday at 08:32 AM

2. Looking for 10 beta testers – Server Monitor module (WHMCS Marketplace)

   By Soluzioni, March 9
   • 4 replies
   • 624 views
   • 
   • CS-Design
   • May 25

3. Segmentation fault using ionCube Loader v15.5.0, PHP 8.3+ and xDebug v3.5.0

   By andp97, May 19
   • 1 reply
   • 299 views
   • 
   • andp97
   • May 19

4. minIO WHMCS module for admins with user

   By Marlin Todd, May 2
   • 0 replies
   • 854 views
   • 
   • Marlin Todd
   • May 2

5. Remove / Hide Sidebar (Categories, Actions, Currency) on Mobile – Standard Cart

   By kashif rasool, April 6
   • 2 replies
   • 539 views
   • 
   • sentq
   • April 24

6. Looking for a truly seamless WHMCS domain search + storefront integration into our main website

   By Justin ROCKET LAUNCHER, March 31
   • 2 replies
   • 304 views
   • 
   • sentq
   • April 24

7. Hook: Client Payment Terms (Immediate / Net 30 / Net 60) by Client Group

   By Manuel Y2K, April 20
   • 0 replies
   • 196 views
   • 
   • Manuel Y2K
   • April 20

8. logout redirect to login

   By sokalsondha, May 6, 2018
   • 20 replies
   • 39.1k views
   • 
   • Mytihost
   • April 3

9. PayPal module shows raw JSON error (“CARD_TYPE_NOT_SUPPORTED”) directly to users — need help sanitizing message

   By JesusSuarz, November 2, 2025
   • 2 replies
   • 1.4k views
   • 
   • wtools
   • March 5

10. WHMCS API (2.0.0)

    By wtools, February 10
    • 0 replies
    • 529 views
    • 
    • wtools
    • February 10

11. Product Group in Invoice Item Description

    By saadsalman, October 4, 2010
    • 14 replies
    • 16.6k views
    • 
    • AndyW
    • February 8

12. Defer payment

    By Mytihost, February 2
    • 5 replies
    • 778 views
    • 
    • wtools
    • February 8

13. Professional Proposals with Deposits, Digital Signatures, and Auto-Order Creation

    By sebaspask, January 31
    • 0 replies
    • 344 views
    • 
    • sebaspask
    • January 31

14. MRR/ARR, Top Clients, Revenue by client, Revenue by product, high maintenance clients Widgets

    By sebaspask, January 31
    • 0 replies
    • 322 views
    • 
    • sebaspask
    • January 31

15. Invoice Numbering Issue

    By kwood, December 14, 2025   

    • invoices
    • 5 replies
    • 1.2k views
    • 
    • kwood
    • January 15

16. Digital Downloads

    By kwood, January 7
    • 2 replies
    • 749 views
    • 
    • kwood
    • January 8

17. WHMCS Admin Widget: UK TAX Year Income/Profit/Loss

    By ConorBradley, January 6
    • 3 replies
    • 791 views
    • 
    • pjs32
    • January 8

18. Composer to WHMCS

    By jagathks, August 1, 2017
    • 7 replies
    • 8.3k views
    • 
    • andp97
    • December 30, 2025

19. Order a new service + store links don't get the active class in the menu

    By Negin, December 23, 2025
    • 2 replies
    • 780 views
    • 
    • Negin
    • December 27, 2025

20. WHMCS 9.0 – Upcoming Changes to Module Requirements 1 2

    By WHMCS John, September 10, 2025
    • 36 replies
    • 28.5k views
    • 
    • WHMCS John
    • December 23, 2025

21. Curious problem with GetInvoices API with response totals

    By TBroMEM, December 5, 2025
    • 6 replies
    • 1.1k views
    • 
    • TBroMEM
    • December 8, 2025

22. How to Programmatically Update Password & 2FA Settings in Latest WHMCS Versions?

    By Dust Tsad, December 5, 2025
    • 0 replies
    • 642 views
    • 
    • Dust Tsad
    • December 5, 2025

23. custom billable items Custom billable items description

    By zitu4life, December 3, 2025   

    • advanced users
    • developer
    • (and 3 more)

      Tagged with:

      • advanced users
      • developer
      • experts
      • managed automation
      • WHMCS
    • 3 replies
    • 920 views
    • 
    • zitu4life
    • December 5, 2025

24. I need HOOK to send an email template on new orders

    By Craft, December 21, 2023
    • 1 reply
    • 1k views
    • 
    • RadWebHosting
    • December 4, 2025

25. doubt on WHMCS SEO

    By Ebin V Thomas, October 6, 2022
    • 6 replies
    • 2.1k views
    • 
    • Kartik Sharma
    • November 28, 2025