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Developer Corner

Integration, customization and module development, if you have questions, ask them here.

15125 topics in this forum

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

    By JesusSuarz,
    • 1 reply
    • 839 views

  2. WHMCS API (2.0.0)

    By wtools,
    • 0 replies
    • 328 views

  3. Product Group in Invoice Item Description

    By saadsalman,
    • 14 replies
    • 12.6k views

  4. Defer payment

    By Mytihost,
    • 5 replies
    • 450 views

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

    By sebaspask,
    • 0 replies
    • 147 views

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

    By sebaspask,
    • 0 replies
    • 141 views

  7. Invoice Numbering Issue

    By kwood,   
    • 5 replies
    • 923 views

  8. Digital Downloads

    By kwood,
    • 2 replies
    • 544 views

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

    By ConorBradley,
    • 3 replies
    • 547 views

  10. Composer to WHMCS

    By jagathks,
    • 7 replies
    • 7.9k views

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

    By Negin,
    • 2 replies
    • 546 views

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

    By WHMCS John,
    • 36 replies
    • 24.9k views

  13. Curious problem with GetInvoices API with response totals

    By TBroMEM,
    • 6 replies
    • 791 views

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

    By Dust Tsad,
    • 0 replies
    • 453 views

  15. Custom billable items description

    By zitu4life,   
    • 3 replies
    • 677 views

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

    By Craft,
    • 1 reply
    • 889 views

  17. doubt on WHMCS SEO

    By Ebin V Thomas,
    • 6 replies
    • 1.9k views

  18. Allow community donations to credit a client's WHMCS balance (game server use case)

    By Vulca,
    • 6 replies
    • 1.3k views

  19. record customer and order details when pay now button is clicked and before the payment is completed

    By Easy Green Hosting,
    • 0 replies
    • 553 views

  20. Username generator on new order

    By coophosting,
    • 2 replies
    • 988 views

  21. Hook to change existing Smarty variables

    By Julien,
    • 1 reply
    • 1.2k views

  22. Payment Gateway Fee

    By sol2010,
    • 21 replies
    • 5.3k views

  23. WHMCS 8.8 - Hide $0.00 and Paid Invoices from Client Area Notifications (Freemium 3 Theme)

    By Ali C,
    • 0 replies
    • 439 views

  24. Direct link to view email

    By SeanP,
    • 1 reply
    • 492 views

  25. Hook to log which admin invites users to clients

    By Silvan,
    • 0 replies
    • 527 views
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