What are Comments in PHP? Comments are lines of text that PHP ignores while executing the code.They are used to: Comments are for humans, not for PHP. Why Are Comments Important? Good code + good comments = professional coding đź’ˇ Types of Comments in PHP PHP supports three types of comments. Single-Line Comment Using //…
Introduction In dynamic websites, data doesn’t just get inserted and displayed — it also needs to be updated and sometimes deleted.For example, users may update their profile information, admins may edit product details, or old records may need to be removed from the database. In this tutorial, we’ll learn how to update and delete records…
Introduction Fetching data from a database is one of the most common tasks in PHP applications. Once data is stored in MySQL, PHP can retrieve and display it on web pages. This is how websites show user profiles, blog posts, product lists, and any dynamic content. In this tutorial, you’ll learn how to fetch data…
Introduction When users submit data from a website (like registration forms, contact forms, or feedback forms), that information needs to be stored somewhere. MySQL is commonly used to store such data in tables, and PHP is used to send the form data to the database.By inserting data into MySQL using PHP, you can save user…
Introduction To make PHP work with databases, we must connect PHP to MySQL.This connection allows PHP to insert, read, update, and delete data from a database. In this lesson, you’ll learn how to connect PHP with MySQL using mysqli. What Is mysqli? mysqli stands for MySQL Improved. It: ⚠️ Old mysql_* functions are deprecated and…
Introduction Before PHP can store or retrieve data, we need a database and tables.In this lesson, you’ll learn how to create a database and tables using phpMyAdmin without writing complex SQL. This method is ideal for beginners and shared hosting users. Prerequisites What Is phpMyAdmin Used For? phpMyAdmin allows you to: Most hosting providers include…
Introduction When building dynamic websites, we need a way to store, manage, and retrieve data.This is where databases come into play. In this lesson, we’ll understand: What Is a Database? A database is an organized collection of data stored electronically. Instead of saving data in files, databases allow you to: Examples of data stored in…
When working with files in PHP, security is very important.Improper file permissions can expose sensitive data and allow unauthorized access. In this lesson, we’ll learn file permissions, how PHP handles them, and best security practices. What Are File Permissions? File permissions define who can read, write, or execute a file. In Linux-based servers (most web…
Uploading files is a very common feature in PHP applications.Users upload images, documents, PDFs, and other files through forms. In this lesson, we’ll learn how file upload works in PHP and how to do it safely. How File Upload Works in PHP PHP uses the $_FILES superglobal to handle file uploads. The process is: Creating…
Writing data to files is a common requirement in PHP applications.PHP allows you to create new files, overwrite existing files, or append data easily. In this lesson, we’ll learn how to write files in PHP using simple and practical examples. Why Write Files in PHP? Writing files is useful for: Many PHP-based systems use file…