---
title: WP Plugin Development
category: product
entity_type: skill
price: $15
canonical: https://forgehouse.ai/skills/wp-plugin-development/
lang: en
hreflang_alt: https://forgehouse.ai/tr/skiller/wp-plugin-development/
last_updated: 2026-06-20
---

# WP Plugin Development

> Custom WordPress plugin development

An end-to-end guide for building secure, well-architected WordPress plugins, from a clean single-bootstrap structure and hook-based loading to the full activation/deactivation/uninstall lifecycle. Its core is a security baseline that has stopped the most common WordPress exploits: nonce-plus-capability double checks, prepared statements, and late escaping at every output point.

## Use cases
- Creating or refactoring plugin structure and hook registration
- Implementing activation, deactivation and uninstall behavior
- Building Settings API admin pages with sanitized options
- Fixing security gaps (nonces, capabilities, SQL safety, escaping)
- Designing data storage, cron tasks and schema migrations
- Packaging a plugin release with correct headers

## Benefits
- Nonce + capability double checks close the most common WordPress access-control hole at once
- Prepared statements and late escaping eliminate SQL injection and XSS by construction
- Correct lifecycle hooks prevent orphaned cron events and bloated DB tables on uninstall
- Options-API discipline (autoload off for big data) keeps page load fast

## What’s included
- Predictable architecture: single bootstrap, hook-based loading, admin code behind is_admin()
- Nonce + capability defensive pattern with right-vs-wrong code examples
- Late-escaping output reference (esc_html, esc_attr, esc_url, wp_kses_post)
- $wpdb->prepare() prepared-statement patterns against SQL injection
- Single-site vs multisite platform-difference table (hooks, options, capabilities, cron)
- Pre-ship verification checklist covering headers, sanitization, capabilities and cleanup

## Who it’s for
WordPress developers building or auditing plugins who need a security-first architecture instead of inventing patterns ad hoc.

## How it runs
Most WordPress plugin holes come from a nonce check standing alone. Here every write path pairs nonce with capability, every query goes through prepare, and the lifecycle from activation to uninstall leaves nothing orphaned.
1. Triages the repo first with deterministic scripts: detect_wp_project.mjs identifies the project shape and detect_plugins.mjs scans plugin headers, so in a full-site repo the exact target under wp-content/plugins or mu-plugins is locked before any code changes.
2. Lays the architecture: one bootstrap file with the plugin header, zero side effects at file-load time, all behavior registered through hooks via a loader class, and admin-only code gated behind is_admin so the frontend carries no extra weight.
3. Wires the lifecycle correctly: activation hooks registered at top level (never inside other hooks), flush_rewrite_rules called only after CPT registration, deactivation clears every scheduled cron, and uninstall.php removes user data explicitly so nothing orphans the database.
4. Builds settings through the Settings API: register_setting plus sections and fields, every input passing a sanitize_callback, and large data routed to a custom table instead of an autoloaded option.
5. Applies the security baseline on every write path: nonce verification AND capability check together (nonce alone is the most common WP hole), wp_unslash plus sanitize on input, $wpdb->prepare for every query, and late escaping (esc_html/esc_attr/esc_url) at output.
6. Verifies before release: plugin activates with no fatals or notices, settings save and read under the enforced nonce and capability, uninstall removes intended data and nothing else, and repo lint/tests (PHPCS, PHPUnit) pass.

## FAQ
### I only need a small plugin with one settings page, is this overkill for that?
The structure scales down: a single bootstrap file, hook-based loading and a Settings API page with sanitized options is exactly the small-plugin case it covers. The security baseline (nonce plus capability checks, late escaping) matters just as much at that size, because small plugins ship the same common holes.

### What makes its security approach different from just following the WordPress codex?
It packages the defenses as enforced patterns with right-vs-wrong code examples: nonce-plus-capability double checks together (most exploits slip through when only one is present), $wpdb->prepare() for every query, and late escaping at every output point. You copy a working defensive pattern instead of reassembling rules from scattered docs.

### Will it also build the frontend app or SaaS my plugin talks to?
No. Its scope is the plugin itself: architecture, hooks, lifecycle (activation through uninstall), settings, data storage, cron and release packaging. External services, frontend frameworks or the business logic of a remote API sit outside what it covers.

## Price
$15, one-time, no subscription. VAT included.

Related guide: [AI code review and developer workflow](https://forgehouse.ai/guides/ai-code-review/)