Introduction This article explains, in full detail, how to cache full HTML per URL in WordPress using transients and unique keys. The approach stores rendered HTML (the complete response) in a transient keyed by a unique string derived from the requested URL and optional variations (language, device, user role, cart state, etc.). It covers generation […]
Introduction Transients are WordPresss lightweight API for storing cached data temporarily. They are ideal for caching heavy queries, expensive calculations, and remote requests so your pages render faster and your database does less work. This article explains every important detail you need to safely and effectively use transients to cache heavy PHP/WordPress queries, with practical, […]
Introduction This tutorial explains in exhaustive detail how to optimize WP_Query by using two powerful options: fields => ids and no_found_rows => true. You will learn what each option does, why they improve performance, when to use them, interactions with pagination and meta/tax queries, practical code examples, how to measure effects, pitfalls, and alternative strategies […]
Introduction This article is a comprehensive, practical guide to measuring WordPress hook timings using microtime (and hrtime when available). You will learn why and when to measure hook timings, multiple implementation techniques (simple to advanced), how to measure both actions and filters safely, how to log and display results, and best practices to minimize measurement […]
Introduction Query Monitor is a powerful WordPress developer plugin that helps you find slow database queries, expensive hooks, excessive HTTP requests, and many other performance problems. This article explains, step by step, how to use Query Monitor to detect slow queries, interpret its output, reproduce and verify problems, and apply practical fixes. It includes configuration […]
Introduction This article explains everything about using WP_DEBUG and WP_DEBUG_LOG to debug WordPress sites in PHP. It covers what the constants do, how to enable them safely, example usage, advanced logging techniques, reading and rotating logs, permissions, common pitfalls, and best practices for development and production environments. What these constants do (at a glance) WP_DEBUG […]
Introduction This tutorial covers everything needed to generate .pot files for WordPress projects using the WP-CLI i18n command. It explains prerequisites, installation, options, common problems, best practices, automation examples, and step-by-step commands for themes and plugins. Examples and copy-paste commands are provided in runnable form. Prerequisites WordPress project (theme or plugin code with gettext functions […]
Introduction — Why load a textdomain? Translations in WordPress are handled through gettext. To make your plugin or theme translatable you must (1) wrap all user-facing strings with the appropriate translation functions and (2) make sure the correct translation file (.mo) is loaded. Loading the textdomain tells WordPress which translation catalog to use for lookups […]
Introduction This article is a comprehensive, practical guide to internationalizing strings in WordPress PHP code using the two most common gettext helpers: __() and _e(), plus related functions and workflow. It covers the concepts, API differences, context, plurals, escaping, text domains, generating .pot/.po/.mo files, JavaScript translation considerations, and best practices translators and developers need to […]
Overview This article shows, in exhaustive detail, how to integrate an SMTP provider from PHP into WordPress. It covers the underlying WordPress mail flow, multiple implementation approaches (plugin, direct PHPMailer configuration, Composer-managed PHPMailer), examples for popular providers (SendGrid, Gmail/Google Workspace, Amazon SES), secure credential handling, deliverability best practices (SPF/DKIM/DMARC), debugging and troubleshooting, rate-limiting and queueing […]
