$_POST superglobal variable holds the values sent via HTML Form by using method="POST". This $_POST method most widely used one for sending PHP Form values to server-side programming language. It is very secure, so all the information passed in a secure way, and the User cannot see any information in the browser. If you see the Login form on any website, then they may use this POST method to pass the form values to the server for processing.
For Example :
Output : when we type any input in name box
