How can we change php version of WordPress hosting from computer without cpenal?

Answer 1

call your hosting provider.

if you host, then you need to update PHP on your PC.

Answer 2

The PHP version is set at the server and cpanel is your access to it. If you don't have access, call your tech support. On some servers, the option is not available, but most allow user to pick the version. You could also update php.ini but that's problematic. It either works or could crash. Basic syntax would be:

AddHandler application/x-httpd-phpXXX .php    where 'XXX' is the PHP version, e.g., 7.34