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

folder_open 30 categories

article 353 articles

JavaScript Language · 27 articles

folder_open JavaScript libraries: galleries, charts, maps, and utilities 2 art. folder_open JavaScript data types: primitives, objects, and typeof 7 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 · 25 articles

01 CAPTCHA solving services: Anti-Captcha, 2Captcha, and PHP 02 HTTP proxies for scraping: providers, testing, and PHP curl 03 Working with PDF files in PHP: OCR and PDF-to-image 04 Reading and writing CSV files in PHP 05 cURL in PHP: GET, POST, cookies, and proxies 06 Web scraping in PHP: HTML parsers 07 SQLite in PHP: file databases with PDO 08 PDO in PHP: drivers, connections, queries, and inserts folder_open Xdebug PHP extension: debugging, profiling, and code coverage 0 art. folder_open PHP libraries: PhpSpreadsheet, Carbon, and utilities 1 art. 11 PHP dates and time: DateTime, time zones, and formatting 12 PHP tips, patterns, and idioms 13 PHP development workflow: tooling and practices 14 Composer: PHP dependency management and autoloading 15 PHP web servers: Apache, Nginx, PHP-FPM, and IIS folder_open PHP concurrency: fibers, processes, and threads 3 art. folder_open PHP profiling: performance analysis and bottlenecks 2 art. folder_open PHP testing overview: PHPUnit, Codeception, and strategies 3 art. 19 PHP_CodeSniffer (phpcs): coding standards and style checks 20 phpDocumentor: generate PHP API documentation from DocBlocks 21 PHP syntax basics: variables, operators, and control flow

WordPress CMS Core · 28 articles

folder_open WordPress theme development: templates, the loop, and menus 4 art. 02 WordPress REST API: routes, endpoints, and request parameters 03 WordPress emails: wp_mail, sender headers, and HTML messages 04 WordPress server setup: .htaccess, file permissions, and HTTPS issues folder_open Useful WordPress plugins: membership, community, and development notes 2 art. 06 WordPress hooks: actions, filters, add_action, and add_filter 07 WordPress post types: register_post_type, templates, and queries 08 WordPress AJAX: admin-ajax.php, wp_ajax hooks, and nonces 09 WordPress performance: caching, database, assets, and optimization 10 WordPress taxonomies: register_taxonomy, terms, categories, and tags 11 WordPress meta boxes: add_meta_box, save_post, and post meta folder_open WordPress development setup: Docker, local environment, and workflow 0 art. 13 WordPress users: roles, capabilities, authentication, and user meta folder_open WordPress Cron: wp_schedule_event, WP-Cron, and system cron 0 art. 15 WordPress media library: attachments, uploads, and wp.media 16 WordPress shortcodes: add_shortcode, attributes, and nested content 17 WordPress Options API: get_option, update_option, autoload, and settings 18 WordPress scripts and styles: wp_enqueue_script, wp_enqueue_style, dependencies 19 WordPress code quality checklist: plugins, themes, and reviews 20 WordPress admin screens: settings API, list tables, and UI patterns 21 WordPress HTTP API: wp_remote_get, wp_remote_post, and REST helpers 22 WordPress database: $wpdb, custom queries, and schema 23 WordPress admin menus: add_menu_page, submenus, and capabilities 24 WordPress plugin development: file structure, headers, and activation 25 WordPress coding standards: PHP, JavaScript, HTML, and CSS 26 WordPress core functions reference: URLs, posts, and helpers

Yii2 Framework PHP Framework · 24 articles

01 Yii2 MongoDB extension: queries with yii2-mongodb 02 Yii2 console actions: bootstrapping an app and running actions 03 Yii2 sending emails: mailer component and SMTP transport 04 Yii2 logging: targets, configuration, and VarDumper 05 Yii2 model validation: rules, custom validators, and behaviors 06 Yii2 controllers: actions, behaviors, filters, and responses 07 Yii2 routing: route format, pretty URLs, and URL rules 08 Yii2 YII_ENV: development, production, and environment config 09 Yii2 installation: Composer, requirements, and project templates 10 Yii2 application parameters: params.php and Yii::$app->params 11 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 6 art. 14 Yii2 database migrations: up, down, and console commands 15 Yii2 authentication and authorization: Identity and user component 16 Yii2 admin section: folder structure and backend setup 17 Yii2 widgets: configuration, rendering, and built-in widgets

Joomla CMS Platform · 2 articles

01 Joomla components: mini-applications, admin and site parts 02 Joomla plugins: events, groups, and the installation XML

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 · 6 articles

01 Code agents: Cursor, Claude Code, Copilot, and more folder_open OpenClaw: installation and configuration 1 art. 03 Claude Code plugins I use: extensions and marketplace picks 04 Prompt engineering: techniques for LLMs and chatbots 05 AI tools and services: ChatGPT, Bard, Midjourney, and more 06 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 · 55 articles

01 Connecting Docker containers: links, hosts, and environment 02 Docker Compose: services, networks, volumes, and compose.yml 03 Docker config files: templates, dockerize, and docker-gen 04 Docker container commands: run, exec, logs, and lifecycle 05 Docker containers: lifecycle states and management 06 Docker Content Trust: signing and verifying images 07 Docker image commands: build, tag, pull, push, and export folder_open Docker images: Dockerfiles, build context, and layers 16 art. 09 Docker images: layers, UnionFS, and storage drivers 10 Docker logs: docker logs, drivers, and events 11 Docker Machine: provisioning and managing Docker hosts 12 Docker network commands: create, connect, and inspect 13 Docker networking: CNM, drivers, and Swarm networks 14 Docker orchestration: clustering, scheduling, and management 15 Docker overview: engine, daemon, containerd, and container lifecycle 16 Docker registries: Hub, private registry, and image distribution 17 Docker security: run Docker Bench for Security 18 Docker service discovery: etcd, Consul, SkyDNS, and overlays 19 Docker storage drivers: AUFS, Overlay, devicemapper, BTRFS, ZFS 20 Docker storage: volumes, bind mounts, and persistence 21 Docker Swarm commands: cluster, services, and stacks 22 Docker Swarm: clustering, services, and tasks 23 Docker volume commands: create, list, and remove 24 Docker volumes: declare, mount, and share data 25 Enable Xdebug in Docker and PHP containers 26 Exposing Docker containers: port mapping with -p and -P 27 Kitematic: GUI for Docker containers on Mac and Windows 28 Watchtower: automatic Docker image updates for running containers folder_open Common Docker Hub images: databases, PHP, Node, and stacks 9 art. 30 Docker GUI applications: X11, display forwarding, and desktop apps 31 Docker reverse proxy: Traefik, Nginx, routing, and TLS 32 Docker installation: Engine, Desktop, and Linux setup

DevOps & Infrastructure CI/CD & cloud · 4 articles

01 Continuous integration: Jenkins, Travis, CircleCI, and containers 02 Microsoft Azure: cloud setup, resources, and configuration 03 Terraform: infrastructure as code, state, and providers 04 Ansible: playbooks, inventory, roles, and automation

Email Communication · 3 articles

01 HTML email templates: tables, inline CSS, and client quirks 02 How email works: SMTP, MX records, POP3, and IMAP 03 Email services: providers, SMTP, and transactional mail

Web Fundamentals Fundamentals · 28 articles

01 Regular expressions: patterns, flags, and matching 02 Favicons for websites: sizes, ICO and PNG, and browser support 03 Logo design for websites: tools, formats, and brand basics 04 Git version control: commits, branches, merge, and workflows folder_open IDEs and code editors for web development 1 art. 06 HTTP GET and POST: methods, forms, query strings, and APIs 07 Website performance: speed, caching, assets, and Core Web Vitals 08 IP addresses explained: IPv4, IPv6, local vs public, and routing folder_open Hugo static site generator: overview, content model, and build 17 art. 10 Online developer tools: APIs, testing, debugging, and utilities 11 Prototyping and wireframing: UX flows and design handoff 12 Open source licenses: MIT, GPL, Apache 2.0, and how to choose

Online Payments FinTech · 8 articles

01 LiqPay payments: checkout form, signature, and payment status 02 Interkassa payments: SCI form, Interaction URL, and status pages 03 PayPal payments: integration, buttons, webhooks, and sandbox folder_open Stripe payments: API, Payment Intents, webhooks, and testing 2 art. 05 SEPA direct debit: euro bank debits, mandates, and compliance 06 Bancontact payments: Belgium cards and bank app checkout 07 iDEAL payments: Netherlands bank transfers and checkout flow

Chatbots Automation · 6 articles

folder_open Telegram client API with MadelineProto 5 art. 02 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 · 12 articles

01 Apache HTTP Server on Linux: install, config, and virtual hosts 02 Linux package managers: APT, RPM, and YUM 03 Linux users: creating accounts with useradd 04 Nginx on Linux: installation, configuration, and virtual hosts 05 PHP on Linux: installation, configuration, and PHP-FPM 06 SELinux: status, enforcement, and boolean policies 07 Squid proxy on Linux: ACL, authentication, and access rules 08 Linux storage: disks, partitions, mount points, and usage 09 cURL command-line: HTTP, downloads, headers, and authentication 10 Linux default apps: URI handlers, xdg-mime, and MIME types 11 Linux file permissions: chmod, chown, numeric modes, and bulk fixes 12 SSH key generation: ssh-keygen, ed25519, and authorized_keys

Databases Data Storage · 8 articles

01 MySQL on Linux: installation, setup, and troubleshooting folder_open MongoDB 5 art. 03 GraphQL API: queries, mutations, schemas, and resolvers 04 SQL fundamentals: SELECT, JOINs, indexes, and transactions

Frontend UI / UX · 12 articles

01 Mobile menu: hamburger icon and off-canvas navigation 02 Bootstrap grid: containers, rows, columns, and push/pull 03 CSS frameworks and libraries: Bootstrap, utilities, and UI kits 04 Tailwind CSS: utility-first styling, config, and JIT 05 Grunt task runner: Gruntfile.js, plugins, and build automation 06 Web fonts: @font-face, variable fonts, loading, and fallbacks 07 CSS layouts: Grid, Flexbox, and structuring web pages 08 Frontend tips: CSS, HTML, and performance patterns 09 Video on the web: HTML5 video, formats, codecs, and embedding 10 Webpack: bundling, loaders, dev server, and optimization 11 CSS Flexbox: alignment, flex properties, and responsive layouts 12 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 · 13 articles

folder_open Facebook Graph API: nodes, edges, fields, and requests 5 art. folder_open Google APIs overview: Cloud Console, OAuth, and client libraries 8 art. folder_open OAuth 2.0: authorization flows, access tokens, and scopes 0 art.

React UI Library · 9 articles

folder_open React Native development: Expo, builds, and publishing 1 art. 02 React state: useState, updates, and lifting state up 03 React UI libraries: Ant Design, MUI, Bootstrap, and utilities 04 React components: props, composition, and function components 05 React elements: createElement, JSX, and rendering to the DOM 06 React fundamentals: JSX, the virtual DOM, and rendering 07 React events: synthetic events, handlers, and controlled inputs 08 React installation: Create React App, Vite, and project setup 09 React development workflow: tooling, Fast Refresh, and production build

currency_bitcoin

Bitcoin Blockchain · 8 articles

01 Bitcoin clients: full nodes, lightweight wallets, and web wallets 02 Bitcoin addresses: formats, privacy, and explorers 03 Bitcoin transactions: inputs, outputs, fees, and ownership chains 04 Bitcoin confirmations: unconfirmed txs, blocks, and low-value payments 05 Accepting Bitcoin payments: BIP21 URIs and payment QR codes 06 Bitcoin explorers and APIs: UTXOs and blockchain.info 07 Bitcoin Core wallets: createwallet, addresses, labels, and backup 08 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 · 6 articles

01 People search and OSINT: public people databases and directories 02 Bot traffic defenses: user-agents and blocking cheap hosting proxies 03 SMS verification services: virtual numbers and receiving codes 04 Privacy-oriented payments: virtual cards and third-party services 05 Android RAT malware: remote access trojans and awareness 06 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