Introduction to AJAX

AJAX (Asynchronous JavaScript and XML) in PHP is used to send and receive data from the server without reloading the page. This improves user experience by making web applications more interactive and dynamic.

How AJAX Works

• User Action – The user triggers an event (e.g., clicking a button).
• JavaScript Sends a Request – The browser sends an HTTP request to a server using JavaScript (commonly with XMLHttpRequest or fetch API).
• Server Processes Request – The server processes the request (e.g., fetching data from a database).
• Server Sends Response – The server sends back data (in formats like JSON, XML, or plain text).
• JavaScript Updates the Page – The received data is used to update the webpage dynamically without a full reload.