Php echo code shows blank when I load the page in browser

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I want to connect to mysql with php i have done this before but this time i tested php and it wont show echo string, this is the code...I have installed php and it shows details when i type in the cmd php -version...

HTML

<pre><!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title></title>
  </head>
  <body>
    <?php echo "salut"; ?>
  </body>
</html>

When i load the page in Firefox Mozilla it is blank...

What I have tried:

1.I installed xampp
2.I checked if php is installed by cmd php -version

Posted 19-Jan-19 0:12am

serban c

Updated 19-Jan-19 0:28am

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OriginalGriff · Answer 1 · 2019-01-19T00:29:00

You can't just save it as an HTML file on your dev machine and open it in firefox: it needs to be opened from a server which supports PHP.

If you don't then the php code can;t be executed so you will get a blank display.
Try it:

HTML

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title></title>
  </head>
  <body>
    This machine <?php echo "supports php"; ?>
  </body>
</html>

Will print "this machine" but nothing else.