Category: Uncategorized

Introduction This tutorial explains, in exhaustive detail, how to intercept wp_mail() in WordPress for logging, debugging and development purposes. It covers WordPress internals relevant to email delivery, the available hooks and actions, practical examples (lightweight logger, raw MIME capture, database storage, admin viewer), ways to safely short-circuit sending in development, and operational considerations (performance, security, […]

Introduction This tutorial explains in full detail how to send HTML emails in WordPress using wp_mail, how to create and use HTML templates, how to handle headers, attachments, content types, and common debugging and deliverability considerations. You will find multiple complete, copy-paste-ready examples, a recommended pattern for template loading and safe placeholder replacement, how to […]

Overview This article explains, in exhaustive detail, how to disable WordPresss built-in pseudo-cron (wp_cron) and run scheduled tasks using a real system cron (or systemd timer) while managing and testing schedules with WP-CLI. It covers reasons to switch, exact commands and file edits, multiple example setups (cron, cron.d, crontab for a specific user, systemd timer), […]

Introduction — What is WP-Cron? WP-Cron is WordPresss internal scheduling system for running time-based tasks (scheduled events). Unlike system cron daemons on servers, WP-Cron is triggered on page load: when someone requests a page and a scheduled event is due, WordPress will try to spawn the WP-Cron process via an HTTP request to wp-cron.php. WP-Cron […]

Introduction — why you must handle database schema migrations in plugins When a WordPress plugin evolves, its database schema often must evolve with it: new tables, added columns, dropped columns, renamed columns, changed indexes, or mass data transformations. If you ship schema changes carelessly you risk data loss, fatal PHP/SQL errors, performance regressions and unhappy […]

Introduction This article is a complete, in-depth guide to creating and managing WordPress database tables from a plugin activation using dbDelta. It covers everything from the required includes and SQL structure to versioned upgrades, multisite handling, common pitfalls, and practical examples you can copy and adapt. The code examples are presented in ready-to-use PHP blocks. […]

Overview This article explains, in exhaustive detail, how to create a WordPress admin page with its own top-level menu in PHP. It covers the simple add_menu_page() usage, submenu handling, enqueuing scripts/styles for that page, building secure forms (both using the Settings API and manual handling), AJAX from the admin page, capability checks, sanitization, internationalization, multisite […]

Introduction This article is an exhaustive, practical reference on how to check permissions in WordPress using current_user_can() in PHP. It covers how the function works, when and where to call it, the difference between roles and capabilities, meta-capabilities (such as edit_post), multisite and REST/AJAX considerations, security and performance best practices, common pitfalls, and many copy-paste-ready […]

Introduction This article is a comprehensive tutorial on how to register custom roles and capabilities in WordPress using PHP. It covers the theory (how WordPress roles and capabilities work), practical examples (how to create roles, add/remove capabilities, attach capabilities to custom post types, and use meta-capabilities), best practices (when and where to register roles), multisite […]

Introduction Goal: intercept WordPress 404 requests and suggest relevant content to visitors using PHP. This reduces bounce rate, helps users find what they want, and preserves SEO signals if handled correctly. What youll learn: multiple practical implementations (theme 404 template change, template_redirect hook, fulltext queries, fuzzy title matching), caching and invalidation, best practices (SEO, performance, […]