Blog about Web Programming and Electronics
The Vadnica Blog is a place where I share my experience with web programming and electronics. Here you will find articles about HTML, CSS, JavaScript, PHP and MySQL, as well as Arduino projects, Linux and news from the world of technology. I write in a simple, understandable language, so the content is accessible to both beginners and more experienced readers.
How PHP Security Works (Basics)
Web application security is one of the most important topics in PHP development. Any visitor can sen...
How to Make a Login and Registration: Complete Guide with PHP
Login and user registration are the foundation of every web application that requires user accounts....
What is Encryption and Why It Matters
Encryption is a process that transforms data into an unreadable form, accessible only to those with ...
What is a Hash Function and Why It Matters
Hash functions are one of the most important tools in modern computer science. At first glance they ...
What is PHP and Why It Powers WordPress and Most of the Web
Despite the emergence of alternative backend stacks, PHP (Hypertext Preprocessor) continues to power...
What is JavaScript and Why It Powers the Entire Modern Web
When interacting with any modern web platform, data feeds refresh dynamically without page reloads, ...
CSS Basics for Beginners: How to Style Webpages
If HTML provides the structural skeleton of a webpage, CSS (Cascading Style Sheets) is the engine th...
What is HTML and Why It is the Backbone of Every Website
Every website you navigate on your computer or mobile device is fundamentally built upon HTML (Hyper...
How to Build a Simple PHP Backend for Web Applications
Every modern web application or store requires a backend responsible for secure data processing, dat...
What is WebSocket and How It Enables Real-Time Communication
The classic HTTP protocol relies on a request-response model: the client (browser) must always initi...
What is a REST API and How It Connects Applications
In modern web development, the data layer (backend) and the user interface (frontend or mobile appli...
How AJAX Works and Why It Is Essential for Modern Websites
In the early days of web development, every user interaction—such as submitting a form or clicking t...