First, your extension is wrong. It should, as other users have indicated, be titled index.php instead of index.html.
If you aren't already uploading (with an FTP for example) to a server that supports PHP, you will have to make one yourself. An example for mac: MAMP.
That will also support your SQL DB. Hope this helped!
EDIT: Oh, I see a new error. When you have a quotation mark within a quotation mark, you need an escape sequence (" \" hello\" "). Otherwise PHP will think the second " is ending the first, instead of actually being in the string. So you should have, for example:
echo "<p style=\"text-align: center;\"><strong>Cucina:</strong></p><br/><br/>";