Notes from real client work

Field notes & tutorials.

Hard-won lessons from shipping WHMCS modules, securing servers, and automating hosting businesses - written so you can apply them today.

46 articles · 27 categories · updated weekly

All articles 46 Resources 1 WHMCS 9 Security 3 IPTV 1 Business 1 Marketing 1 Development 7 Automation 1 Performance 1 Configuration 2 Technical 5 Design 1 Analytics 2 Billing 2 Tutorials 1 Integration 3 Security Advisories 1

WHMCS Hooks Guide: Extend Functionality Without Modifying Core Files

Stop editing WHMCS core files. After 10+ years building WHMCS systems, here is the working model for hooks — the 7 you will actually use, a real walkthrough, and the pitfalls that have cost me nights of sleep.

S Shahid Malla · Jan 4, 2026 · 14 min

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WHMCS Cron Jobs: Setup, Troubleshooting, and Monitoring

Half the WHMCS support tickets I see are cron-related. The exact line that should be in your crontab, where it should run, how to verify it works, and how to prevent overlaps with flock.

S Shahid Malla Jan 3 · 99

Technical 8 min

WHMCS Upgrade & Update Best Practices

The runbook I use on every WHMCS upgrade — pre-checks, staging test, the upgrade itself, post-upgrade verification, and how to roll back when it goes sideways.

S Shahid Malla Jan 2 · 94

Security 5 min

WHMCS Fraud Prevention & Order Screening

Hosting is one of the most-targeted businesses for card fraud. Run without fraud prevention and your gateway will close your account. The layered defense that actually works.

S Shahid Malla Dec 30 · 82

Resources 6 min

Best WHMCS Addons & Modules — The Working Stack

The marketplace has 1,000+ modules. The real shortlist for a working hosting business is about 15 — the non-negotiables, the strong recommendations, and what to skip.

S Shahid Malla Dec 28 · 108

Development 8 min

WHMCS API Usage: Real-World Patterns That Work in Production

The WHMCS API turns a billing app into a platform. The 15 commands I actually use, authentication done right, real signup-from-external-site example, and the pagination/error patterns for production code.

S Shahid Malla Dec 27 · 148

Business 5 min

WHMCS Tax & GST Configuration Guide

Tax misconfiguration is invisible until you have a problem. The practical setup — inclusive vs exclusive, per-region rates, EU VAT MOSS, Indian GST with CGST/SGST/IGST.

S Shahid Malla Dec 24 · 66

IPTV 5 min

WHMCS for IPTV Billing: Complete Setup Guide

IPTV doesn't fit the standard hosting mold. Lines provision against Xtream Codes, payments need flexibility (crypto), fraud is constant, trial-to-paid conversion is everything. The practical playbook.

S Shahid Malla Dec 22 · 76

Technical 10 min

WHMCS Troubleshooting: The Diagnostic Flowchart

A working diagnostic flowchart for WHMCS issues — white screens, cron failures, missing emails, payment-recording bugs, license errors, database issues, and what to send WHMCS support when you escalate.

S Shahid Malla Dec 18 · 99

Development 9 min

Building Custom WHMCS Provisioning Modules: A Real-World Developer Guide

The complete model for building production-quality WHMCS provisioning modules. The contract, the params array, idempotency rules, and the patterns that prevent 90% of incidents I have seen in 200+ modules.

S Shahid Malla Dec 6 · 132

Configuration 5 min

WHMCS Configurable Options: Dynamic Pricing & Customization

Configurable Options let a single WHMCS product become five products without creating five products. The practical guide — types, real examples, provisioning module integration, upgrade flows.

S Shahid Malla Dec 4 · 80

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