How to update PHP in staging website?

Check to see if one of these files specifies a particular PHP version:

.htaccess
.used.ini
.php.ini

If not, please contact your host.

Thanks for your answer ??

I found inside .htaccess this: “AddHandler application/x-httpd-php70 .php .php5 .php4 .php3”

which is the PHP used though?

Darn good question. Ask your host.

I did and here’s the answer to change to a specific PHP version https://www.siteground.com/kb/how_to_have_different_php_versions/

@sterndata thanks for having helped me getting to the solution though