T TexasGreg Member Jun 8, 2022 #1 Jun 8, 2022 #1 I have an application that is forcing me to stick with PHP 7.3. I compiled PHP 7.3 in Openlitespeed. Now I'm trying to install Roundcube and can't because of the missing PHP intl extension. How can I add this extension to Debian 11? The repositories start at PHP 7.4.