Knowledge Base

All Articles

Complete index of all sections and articles across the knowledge base.

folder_open 29 categories

article 223 articles

JavaScript Language · 25 articles

folder_open JavaScript libraries: galleries, charts, maps, and utilities 1 art. folder_open JavaScript data types: primitives, objects, and typeof 6 art. 03 JavaScript tips, patterns, and idioms folder_open JavaScript in the browser: script loading, defer, and async 4 art. 05 HTTP requests in JavaScript: fetch, XMLHttpRequest, and libraries 06 JavaScript development workflow: tooling and practices 07 JavaScript code quality checklist: review and maintainability 08 JavaScript functions: declarations, closures, and this 09 JavaScript classes: syntax, OOP, and constructors 10 JavaScript dates and time: Date, Intl, and time zones 11 setTimeout and setInterval in JavaScript: timers and scheduling 12 JavaScript VR: React 360 and WebXR resources 13 JavaScript on mobile: React Native and hybrid apps 14 JavaScript desktop apps: Electron overview 15 JavaScript on the server: Node.js and npm 16 JavaScript modules: CommonJS, ES modules, import and export 17 JavaScript syntax, style guide, and coding standards

PHP Language · 13 articles

folder_open Xdebug PHP extension: debugging, profiling, and code coverage 0 art. folder_open PHP libraries: PhpSpreadsheet, Carbon, and utilities 1 art. 03 PHP dates and time: DateTime, time zones, and formatting 04 PHP tips, patterns, and idioms 05 PHP development workflow: tooling and practices 06 Composer: PHP dependency management and autoloading 07 PHP web servers: Apache, Nginx, PHP-FPM, and IIS folder_open PHP fibers: coroutines and async concurrency (PHP 8.1+) 0 art. folder_open PHP profiling: performance analysis and bottlenecks 2 art. folder_open PHP testing overview: PHPUnit, Codeception, and strategies 2 art. 11 PHP_CodeSniffer (phpcs): coding standards and style checks 12 phpDocumentor: generate PHP API documentation from DocBlocks 13 PHP syntax basics: variables, operators, and control flow

WordPress CMS Core · 20 articles

folder_open Useful WordPress plugins: membership, community, and development notes 1 art. 02 WordPress hooks: actions, filters, add_action, and add_filter 03 WordPress post types: register_post_type, templates, and queries 04 WordPress AJAX: admin-ajax.php, wp_ajax hooks, and nonces 05 WordPress performance: caching, database, assets, and optimization 06 WordPress taxonomies: register_taxonomy, terms, categories, and tags 07 WordPress meta boxes: add_meta_box, save_post, and post meta folder_open WordPress development setup: Docker, local environment, and workflow 0 art. 09 WordPress users: roles, capabilities, authentication, and user meta folder_open WordPress Cron: wp_schedule_event, WP-Cron, and system cron 0 art. 11 WordPress media library: attachments, uploads, and wp.media 12 WordPress shortcodes: add_shortcode, attributes, and nested content 13 WordPress Options API: get_option, update_option, autoload, and settings 14 WordPress scripts and styles: wp_enqueue_script, wp_enqueue_style, dependencies 15 WordPress code quality checklist: plugins, themes, and reviews 16 WordPress admin screens: settings API, list tables, and UI patterns 17 WordPress HTTP API: wp_remote_get, wp_remote_post, and REST helpers 18 WordPress database: $wpdb, custom queries, and schema 19 WordPress admin menus: add_menu_page, submenus, and capabilities 20 WordPress plugin development: file structure, headers, and activation 21 WordPress coding standards: PHP, JavaScript, HTML, and CSS 22 WordPress core functions reference: URLs, posts, and helpers

Yii2 Framework PHP Framework · 14 articles

01 Yii2 YII_ENV: development, production, and environment config 02 Yii2 installation: Composer, requirements, and project templates 03 Yii2 application parameters: params.php and Yii::$app->params 04 Yii2 testing: PHPUnit, Codeception, and test environments folder_open Yii2 database layer: Active Record, Query Builder, and DAO 3 art. folder_open Yii2 displaying data: ActiveForm, GridView, and widgets overview 3 art. 07 Yii2 database migrations: up, down, and console commands 08 Yii2 authentication and authorization: Identity and user component 09 Yii2 admin section: folder structure and backend setup 10 Yii2 widgets: configuration, rendering, and built-in widgets

Laravel Framework PHP Framework · 17 articles

folder_open Laravel authentication: guards, providers, and session overview 3 art. 02 Laravel mail: Mailables, Markdown, queues, and SMTP 03 Laravel forms: validation, CSRF, and request handling 04 Laravel installation: Composer, requirements, and new project 05 Laravel configuration: .env, config files, and services folder_open Laravel overview: lifecycle, bootstrap, and application structure 0 art. 07 Laravel development workflow: Sail, debugging, and deployment 08 Laravel controllers: requests, responses, and single action 09 Laravel ecosystem: e-commerce projects and GitHub topics 10 Laravel Mix: compiling assets, webpack, and frontend build 11 Laravel Blade: templates, directives, and components folder_open Laravel models and database: Eloquent, migrations, and queries 4 art. 13 Laravel routing: routes, controllers, middleware, and groups

OpenCart Store Platform · 1 articles

01 OpenCart installation: hosting, setup, and store configuration

Artificial intelligence ML & LLM · 3 articles

01 Prompt engineering: techniques for LLMs and chatbots 02 AI tools and services: ChatGPT, Bard, Midjourney, and more 03 AI prompt templates: structure, variables, and reusable patterns

WooCommerce E-Commerce · 7 articles

01 WooCommerce templates: theme overrides, cart, checkout, and emails 02 WooCommerce orders: database tables, WC_Order, and order data 03 WooCommerce Subscriptions: recurring payments, product types, and gateways 04 WooCommerce custom payment gateway: WC_Payment_Gateway and checkout 05 WooCommerce API callbacks: wc-api URLs and woocommerce_api hooks 06 WooCommerce admin classes: WC_Admin_Settings, tabs, and WC_Settings_Page 07 WooCommerce Settings API: gateways, shipping methods, and form fields

jQuery JS Library · 4 articles

01 jQuery snippets: modals, forms, and common DOM patterns 02 jQuery objects: selectors, chaining, and the jQuery collection 03 jQuery AJAX: $.ajax, shorthand methods, and JSON 04 jQuery events: on, off, delegation, and namespaced handlers

Docker Containers · 15 articles

folder_open Common Docker Hub images: databases, PHP, Node, and stacks 9 art. folder_open Docker images: Dockerfiles, build context, and layers 1 art. 03 Docker GUI applications: X11, display forwarding, and desktop apps 04 Watchtower: automatic Docker image updates for running containers 05 Docker reverse proxy: Traefik, Nginx, routing, and TLS 06 Docker Compose: services, networks, volumes, and compose.yml 07 Docker installation: Engine, Desktop, and Linux setup

DevOps & Infrastructure CI/CD & cloud · 3 articles

01 Microsoft Azure: cloud setup, resources, and configuration 02 Terraform: infrastructure as code, state, and providers 03 Ansible: playbooks, inventory, roles, and automation

Email Communication · 2 articles

01 How email works: SMTP, MX records, POP3, and IMAP 02 Email services: providers, SMTP, and transactional mail

Web Fundamentals Fundamentals · 17 articles

01 Favicons for websites: sizes, ICO and PNG, and browser support 02 Logo design for websites: tools, formats, and brand basics 03 Git version control: commits, branches, merge, and workflows folder_open IDEs and code editors for web development 1 art. 05 HTTP GET and POST: methods, forms, query strings, and APIs 06 Website performance: speed, caching, assets, and Core Web Vitals 07 IP addresses explained: IPv4, IPv6, local vs public, and routing folder_open Hugo static site generator: overview, content model, and build 7 art. 09 Online developer tools: APIs, testing, debugging, and utilities 10 Prototyping and wireframing: UX flows and design handoff 11 Open source licenses: MIT, GPL, Apache 2.0, and how to choose

Online Payments FinTech · 5 articles

01 PayPal payments: integration, buttons, webhooks, and sandbox folder_open Stripe payments: API, Payment Intents, webhooks, and testing 1 art. 03 SEPA direct debit: euro bank debits, mandates, and compliance 04 Bancontact payments: Belgium cards and bank app checkout 05 iDEAL payments: Netherlands bank transfers and checkout flow

Chatbots Automation · 1 articles

01 Telegram bots: Bot API, webhooks, commands, and deployment

Design patterns Architecture · 3 articles

01 Object-relational mapping (ORM): entities, mapping, and persistence 02 Inversion of Control (IoC): containers, frameworks, and flow 03 Dependency injection: constructors, interfaces, and DI containers

Linux Operating System · 5 articles

01 Linux storage: disks, partitions, mount points, and usage 02 cURL command-line: HTTP, downloads, headers, and authentication 03 Linux default apps: URI handlers, xdg-mime, and MIME types 04 Linux file permissions: chmod, chown, numeric modes, and bulk fixes 05 SSH key generation: ssh-keygen, ed25519, and authorized_keys

Databases Data Storage · 2 articles

01 GraphQL API: queries, mutations, schemas, and resolvers 02 SQL fundamentals: SELECT, JOINs, indexes, and transactions

Frontend UI / UX · 10 articles

01 CSS frameworks and libraries: Bootstrap, utilities, and UI kits 02 Tailwind CSS: utility-first styling, config, and JIT 03 Grunt task runner: Gruntfile.js, plugins, and build automation 04 Web fonts: @font-face, variable fonts, loading, and fallbacks 05 CSS layouts: Grid, Flexbox, and structuring web pages 06 Frontend tips: CSS, HTML, and performance patterns 07 Video on the web: HTML5 video, formats, codecs, and embedding 08 Webpack: bundling, loaders, dev server, and optimization 09 CSS Flexbox: alignment, flex properties, and responsive layouts 10 Babel: JavaScript transpiling, presets, env, and polyfills

currency_bitcoin

Ethereum Smart Contracts · 4 articles

01 Ethereum basics: accounts, gas, transactions, and networks folder_open Ethereum node clients: Geth, OpenEthereum, sync, and RPC 2 art. 03 Ethereum smart contracts: Solidity, deploy, verify, and tools

admin_panel_settings

Administration Server Admin · 12 articles

01 Windows activation: product keys, digital license, and KMS 02 Create bootable USB from ISO: flashing tools and verification 03 Windows versions: releases, editions, support lifecycle, and choosing 04 Web hosting providers: VPS, shared hosting, and what to compare 05 Email clients vs mail servers: SMTP, IMAP, and POP3 roles folder_open CentOS server setup: security, packages, and configuration guides 7 art.

APIs & Integrations Integrations · 5 articles

folder_open Google APIs overview: Cloud Console, OAuth, and client libraries 5 art. folder_open OAuth 2.0: authorization flows, access tokens, and scopes 0 art.

React UI Library · 8 articles

01 React state: useState, updates, and lifting state up 02 React UI libraries: Ant Design, MUI, Bootstrap, and utilities 03 React components: props, composition, and function components 04 React elements: createElement, JSX, and rendering to the DOM 05 React fundamentals: JSX, the virtual DOM, and rendering 06 React events: synthetic events, handlers, and controlled inputs 07 React installation: Create React App, Vite, and project setup 08 React development workflow: tooling, Fast Refresh, and production build

currency_bitcoin

Bitcoin Blockchain · 2 articles

01 Bitcoin Core wallets: createwallet, addresses, labels, and backup 02 Bitcoin Core (bitcoind): full node, RPC, and bitcoin.conf

Windows OS Admin · 1 articles

01 Microsoft Office: Word, Excel, Outlook, and productivity tips

Hardware Physical · 4 articles

01 RFID and NFC: cards, readers, frequencies, and security basics 02 Hard drives vs SSDs: SATA, NVMe, capacity, and reliability 03 Apple iPhone: models, iOS tips, storage, and accessories 04 PC running slow: CPU, RAM, disk, malware, and quick fixes

HTML Markup · 14 articles

folder_open SVG tutorial: vector graphics in HTML and the DOM 12 art. 02 HTML Canvas API: 2D context, drawing, and animation basics 03 HTML starter snippets: boilerplate document and table skeleton

Ethical hacking Security · 4 articles

01 SMS verification services: virtual numbers and receiving codes 02 Privacy-oriented payments: virtual cards and third-party services 03 Android RAT malware: remote access trojans and awareness 04 Phishing and MITM: evilginx2, session cookies, and 2FA risks

Other things Miscellaneous · 2 articles

01 Software I use: apps, tools, and daily stack (personal list) 02 Before reinstalling your OS: backup, drivers, and checklist