How to use FileCopy Library
spl_autoload_register(function ($class_name) {
include $class_name . '.php';
});
use FileHandler\src\FileCopy as FC;
$Obj = new FC;
$Obj->setLocalDir('box');
$arr = []; // full path with file name goes here as array
$Obj->setSourceFile($arr);
$Obj->save();
print_r($x->getResult());