web.php
Route::group([‘domain‘ => ‘www.a.com‘], function () {
Route::any(‘/‘,‘\App\Http\Controllers\IndexController@index‘);
});
Route::group([‘domain‘ => ‘www.b.cn‘], function () {
Route::any(‘/‘,‘\App\Http\Controllers\IndexController@home‘);
});
原文：https://www.cnblogs.com/kaka666/p/11635640.html