UBB.threads assumes a fully functioning production ready web server exists; it's just a simple web script... For what it's worth, my test site on PHP83 has these installed:
Code
root@home:~# sudo yum list installed | grep php83
php83-php-bcmath.x86_64                          8.3.11-1.el9.remi                  @remi-safe        
php83-php-cli.x86_64                             8.3.11-1.el9.remi                  @remi-safe        
php83-php-common.x86_64                          8.3.11-1.el9.remi                  @remi-safe        
php83-php-devel.x86_64                           8.3.11-1.el9.remi                  @remi-safe        
php83-php-fpm.x86_64                             8.3.11-1.el9.remi                  @remi-safe        
php83-php-gd.x86_64                              8.3.11-1.el9.remi                  @remi-safe        
php83-php-mbstring.x86_64                        8.3.11-1.el9.remi                  @remi-safe        
php83-php-mysqlnd.x86_64                         8.3.11-1.el9.remi                  @remi-safe        
php83-php-opcache.x86_64                         8.3.11-1.el9.remi                  @remi-safe        
php83-php-pdo.x86_64                             8.3.11-1.el9.remi                  @remi-safe        
php83-php-pear.noarch                            1:1.10.15-3.el9.remi               @remi-safe        
php83-php-pecl-igbinary.x86_64                   3.2.16-1.el9.remi                  @remi-safe        
php83-php-pecl-memcache.x86_64                   8.2-3.el9.remi                     @remi-safe        
php83-php-pecl-msgpack.x86_64                    2.2.0-2.el9.remi                   @remi-safe        
php83-php-pecl-redis6.x86_64                     6.0.2-1.el9.remi                   @remi-safe        
php83-php-pecl-zip.x86_64                        1.22.3-1.el9.remi                  @remi-safe        
php83-php-process.x86_64                         8.3.11-1.el9.remi                  @remi-safe        
php83-php-xml.x86_64                             8.3.11-1.el9.remi                  @remi-safe        
php83-runtime.x86_64                             8.3-1.el9.remi                     @remi-safe

I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums.
Do you need Forum Install or Upgrade Services?
Forums: A Gardeners Forum
UBB.threads: UBBWiki, UBB Styles, UBB.Sitemaps
Longtime Supporter & Resident Post-A-Holic
VNC Web Services: Code Modifications, Upgrades, Styling, Coding Services, Disaster Recovery, and more!