PHP Tutorial

Learn PHP

PHP (Hypertext Preprocessor) is a server-side scripting language designed for web development but also used as a general-purpose programming language. It was created by Danish-Canadian programmer Rasmus Lerdorf in 1994 and has since evolved into a widely used language for building dynamic web applications.

PHP is commonly used to build a wide range of web applications, including websites, content management systems (CMS), e-commerce platforms, and more.

Why to Learn PHP?

PHP (originally standing for "Personal Home Page" but now a recursive acronym for "PHP: Hypertext Preprocessor") is indeed a widely used server-side scripting language.

The open-source tools and high running speed make PHP one of the most preferred languages for creating interactive websites and web applications

As the market for PHP increases, businesses are looking for new PHP web development trends to develop a perfect web app.

Example

<!DOCTYPE html>
<html>
<body>

<?php
echo "Welcome to Codelines!";
?> 

</body>
</html>

Output

Welcome to Codelines!

PHP Features

PHP's popularity stems from its combination of simplicity and open-source nature. Here are some key features that contribute to its widespread use:

Simplicity:

• Readability: Write code that is easy to read and understand. Use clear and meaningful variable and function names.
• Modularity: Break down your code into small, modular functions or classes. This promotes reusability and makes it easier to understand and maintain.
•Error Handling: Implement proper error handling to make debugging easier. Use try-catch blocks for exception handling when necessary.
• Security Best Practices: Follow security best practices to prevent common vulnerabilities. Validate input, use parameterized queries to prevent SQL injection, and sanitize output.

• Frameworks and Libraries: Consider using PHP frameworks or libraries when they simplify development tasks.

Object-Oriented Programming (OOP):

• PHP supports OOP principles like inheritance, encapsulation, and abstraction.
• Enables creation of reusable and modular code, similar to Java and Python.

Interpreted Language:

• PHP is interpreted, eliminating the need for compilation.
• Interpreters execute code line by line, promoting platform independence.
• Supports dynamic typing, allowing more flexibility in coding.

Efficiency:

• Efficient memory management and session handling.
• Minimizes unnecessary memory allocation.

Fast Performance:

• PHP scripts generally load web pages faster.
• Execution within its memory space enhances speed.

Open-Source and Free:

• PHP is open-source and freely available.
• No licensing costs, making it cost-effective.