How does PHP connect to the dynamic library! Please enlighten me

How to connect PHP to the dynamic library! Please enlighten me! If PHP is connected to a dynamic library, it is the. dll file! Give pointers to experts !, First, you need. copy the dll file to the \ ext folder of the php installation directory and modify the php. ini file, in ;;;;;;;;;;;;;;;;;;;;;;; dynamicExtensions; how to connect PHP to a dynamic library! Please enlighten me!
If PHP is connected to a dynamic library, it is the. dll file!
Give pointers to experts!

------ Solution --------------------
Copy the. dll file to the \ ext folder of the php installation directory, and modify the php. ini file in

;;;;;;;;;;;;;;;;;;;;;;
; Dynamic Extensions;
;;;;;;;;;;;;;;;;;;;;;;

In the configuration section, add reference to the dll file according to the format extension = a. dll, and restart the web server that hosts php.
------ Solution --------------------
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