Where should PHP go?

As with any programming language, it is necessary to create specific files that will contain the PHP code so that it can then be interpreted by a machine.

Logically, the files must have the .php extension in order to be detected

In addition to the file extension, PHP has an additional characteristic: the code to be interpreted must be delimited within the file.

You simply need to place all the PHP code between:

• the opening tag <?php
• the closing tag ?>