$_SERVER is a superglobal array in PHP that provides information about the server environment and the current request. It contains data such as headers, paths, and script locations, which can be useful for debugging, processing requests, and configuring applications.
AJAX (Asynchronous JavaScript and XML) is a technique used in web development to create asynchronous web applications. It allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes.
To send mail using the PHP mail() function in a local development environment like XAMPP, you need to configure the PHP php.ini file and the sendmail configuration file. Here’s a step-by-step guide:
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