Introduction to php
PHP (Hypertext Preprocessor) is a server-side scripting language primarily used for web development.
What Php Does?
- Dynamic Content: PHP allows you to create web pages that aren’t static. You can display different content based on user input, time, or other factors. Imagine a website that shows personalized greetings or news articles tailored to the user.
- Database Interaction: PHP connects to databases like MySQL, allowing you to store and retrieve information. This is crucial for e-commerce sites, forums, and content management systems.
- User Interaction: PHP handles form submissions, user logins, and other interactions, making websites more engaging and user-friendly.
- Server-Side Logic: PHP executes complex logic on the server before the page is sent to the user’s browser. This includes calculations, data validation, and security checks.
Why use PHP?
- Ease of Use: PHP’s syntax is relatively easy to learn, especially for beginners.
- Open Source: It’s free to use and distribute.
- Large Community: A vast community provides support, resources, and a wealth of knowledge.
- Versatility: PHP works with various operating systems and web servers.
- Security: Built-in security features and a focus on security best practices.
Example:
<html>
<head>
<title>Hello</title>
</head>
<body>
<?php
echo "<h1>Hello from PHP!</h1>";
?>
</body>
</html>
In this example:
- This HTML code displays the title “Hello” in the browser tab and uses PHP to generate the text “Hello from PHP!” as a level 1 heading within the page content.