https://www.w3schools.com/PHP/php_superglobals_post.asp
PHP $_POST Superglobal
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML...
phppost
https://www.w3schools.com/PHP/php_superglobals_request.asp
PHP $_REQUEST Superglobal
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML...
phprequest