PHP is used by 21.43% of sites

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PHP (Hypertext Preprocessor) is a widely used server-side scripting language primarily designed for web development. It is a powerful and versatile language that can generate dynamic web pages, interact with databases, handle form submissions, manipulate files, and perform a wide range of other server-side tasks.

PHP is embedded within HTML code, allowing developers to mix PHP and HTML seamlessly. It is executed on the server before the resulting HTML is sent to the client's browser, enabling dynamic content generation and data processing. PHP code is typically enclosed within special delimiters () to differentiate it from HTML markup.

Here are some key features and uses of PHP:

Dynamic Web Pages: PHP allows developers to create web pages that can display different content or perform different actions based on user input or other conditions. It can generate HTML, CSS, JavaScript, and other output dynamically.

Database Connectivity: PHP has built-in functions and extensions to connect to various databases, such as MySQL, PostgreSQL, Oracle, and more. This enables developers to retrieve, insert, update, and delete data from databases, making it suitable for building database-driven web applications.

Form Handling: PHP can handle form submissions by retrieving and processing the data entered by users. It provides functions to validate form inputs, sanitize data to prevent security issues, and perform actions based on the form data.

File Handling: PHP can manipulate files on the server, such as reading from or writing to files, uploading and downloading files, and performing file system operations like creating directories or deleting files.

Session Management: PHP supports sessions, allowing developers to maintain user-specific data across multiple requests. This is useful for implementing features like user authentication, shopping carts, and personalized user experiences.

Server-Side Scripting: PHP can execute scripts and perform various server-side tasks like sending emails, generating PDF documents, generating image thumbnails, and interacting with other web services through APIs.

PHP is supported by a wide range of web servers and platforms, making it a popular choice for web development. It has a large and active community, offering extensive documentation, libraries, frameworks (such as Laravel, Symfony, and CodeIgniter), and resources for developers to build robust and scalable web applications.