How to run .dll file in laravel 5.4

Please help us to hindv right way to call .dll file in laravel 5.4

i have used use COM ; top of my controller as well and

using this type of code for excute .dll file

 $obj = new COM('pathTo.dll'); 
dd($obj);

But not working

Showing error Class 'COM' not found

Please help me for resolved this problem .

via Chebli Mohamed