[01-Dec-2020 17:30:04 America/Boise] PHP Warning: Use of undefined constant php - assumed 'php' (this will throw an Error in a future version of PHP) in code example

Example: Warning: Use of undefined constant vNumber - assumed 'vNumber' (this will throw an Error in a future version of PHP) in C:\xampp\htdocs\HelloWorld\vorbereitung.php on line 112

echo $_POST["email"];