Updating PHP 8.0.x to PHP 8.1.x: step by step guide

In order to update PHP 8.0.x to the latest 8.1.x version available, simply follow these steps:

1. Download and extract PHP 8.1 (8.1.x) VS16 x86 Thread Safe from this link: https://windows.php.net/download/
2. rename folder «php-8.1.x-Win32-vs16-x86\ext\» to «php-8.1.x-Win32-vs16-x86\extensions\»
3. copy «UniServerZ\core\php80\php_development.ini», «UniServerZ\core\php80\php_production.ini», «UniServerZ\core\php80\php_test.ini» and «UniServerZ\core\php80\php-cli.ini» to «php-8.1.x-Win32-vs16-x86\»
4. stop Apache (from UniController or Windows Services ["us_apache_1"])
5. rename file «UniServerZ\core\apache2\conf\extra_us\php80.conf» to «UniServerZ\core\apache2\conf\extra_us\php80.conf.bak»
6. download the attached file and save it to «UniServerZ\core\apache2\conf\extra_us\php80.conf»
7. delete (or backup) the files in the «UniServerZ\core\php80\» folder and replace them with the ones from «php-8.1.x-Win32-vs16-x86\»
8. restart Apache (from UniController or Windows Services ["us_apache_1"])

In UniController, clicking on PHP > Select PHP version > PHP version 80 will now activate PHP 8.1

Hope this helps! 

php80.conf