PHP programs running through Firefox

I've been doing some training working with PHP and MySQL, and have up to now, been running from a virtual machine operating with Debian Linux.
As I'm starting to work with MySQL, I don't want to be working on the VM so trying to run both from my own system as the server, but when I write the code and try and load through Firefox all I get is a blank screen. The code is as follows:

<html>
<head>
<title>Creating MySQL Database</title>
</head>
<body>
<?PHP
$dbhost = 'localhost:3036';
$dbuser = 'XXXX';
$dbpass = 'XXXXXXXX';

$conn = mysqli_connect($dbhost, $dbuser, $dbpass);
if(! $conn ) {
die('Could not connect: ' . mysqli_error($conn));
}
echo 'Connected successfully\n';
$sql = 'CREATE DATABASE TUTORIALS';
$retval = mysqli_query( $sql, $conn );
if(! $retval ) {
die('Could not create database: ' . mysqli_error($conn));
}
echo 'Database TUTORIALS created successfully\n';
mysqli_close($conn);
?>
</body>
</html>

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I've downloaded PHP and MySQL through Wampserver64, and have been able to run PHPMYADMIN with no problems, and also able to turn on and off the MySQL through it's own Root Device, but cannot get it to run through Firefox.

Our own company system is built on PHP with Javascript which runs fine through Firefox.

Can anyone offer some help as to how I can resolve this issue?
Neil BrookesIT DeveloperAsked:
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Ray PaseurConnect With a Mentor Commented:
Good!  That's actually progress.  It means that the script is not getting parsed through PHP.  If it's file is named ending in .php it should be possible to set up Apache so this happens automatically.  Please see this article (you may or may not want to parse HTML files, but you certainly want to parse PHP files)
https://encodable.com/parse_html_files_as_php/
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Ray PaseurCommented:
First step - remove all of the HTML - that only muddies the water here.

Try adding these lines to the PHP script, right at the top.  This will let you see if PHP is getting used at all, and if it encounters any errors.
ini_set('display_errors', TRUE);
error_reporting(E_ALL);
echo 'Hello World';

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Neil BrookesIT DeveloperAuthor Commented:
Thanks Ray

I have just tried that, but all that does when I open with Firefox is display the entire code as a text document.
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Ray PaseurCommented:
E-E asked me close this question
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