How to find out which php libraries are included?

Question

linux

I want to set up a server that meets the requirements of UMI.CMS. My OS is CentOS.
I need to include a number of libraries (zLib, JSON, GD, libxml, mb_string, iconv, xsl, SimpleXML, xmlreade) and I don't know how.
What is the command to view linked libraries?

Answer 1

list of modules for apache command:
apache2ctl (or apache2 or httpd ) -l
list of installed and connected with the flag: -M
function get_loaded_extensions - php.net/manual/ru/function.get-loaded-extensions.php
returns all loaded libraries in php .

Answer 2

$ php -m

Answer 3

phpinfo();