Not WordPress (category)

How indexes work in a MySQL database. Indexes in MySQL (Mysql indexes) are a great tool for optimizing SQL queries. To understand how they work, let's look at working...

Explanation of HTML attributes srcset and sizes, and the `` tag for creating adaptive images. Includes examples, syntax, and browser support. Also covers how to...

Explains the difference between using async and defer attributes in the script tag to control script loading and execution in HTML pages.

Explanation of PHP functions filectime(), fileatime(), and filemtime() and their differences in managing file timestamps.

This note will cover universal Unicode symbols. Icons that are understood by all browsers and systems.

To use icons in HTML code (markup), icon packages based on fonts...

This article provides an overview of CSS Grid Layout, explaining its structure, features, and how to implement it in web design.

This article explains how to create and parse CSV files in PHP, including the format, creation of CSV files, reading CSV files, and converting Excel files to CSV.

A guide to 30 surprising and non-obvious behaviors and pitfalls in PHP.

When uploading a file to WordPress website, WordPress will check the MIME type of the file. Sometimes it's useful to know what the mime file type of a particular file...

Understanding the difference between declaring PHP constants using the const keyword and the define() function, and the features and limitations of each method.

The layout model known as Flexbox (flexes) is becoming increasingly popular. Primarily due to its convenient use in creating frameworks and layouts for individual HTML...

A guide to PHP syntax changes across versions 5.3 through 8.5, highlighting what’s possible in each version and when polyfills or legacy syntax are needed.

Comprehensive guide to CSS selectors, including a full reference list and detailed explanations with examples.

Implementing the insertion of the tab symbol (\t) in a textarea when the TAB key is pressed, along with specifying tab width in CSS.

Introduction to Masonry, a JavaScript library for displaying HTML blocks in a compact, stacked manner. Includes integration, initialization, and usage examples.