Implementation of closure routing

Closure definition

We can use closures to define some routes with special needs without executing the controller's operation method, for example ：

Route::get('hello', function () {
    return 'hello,world!';
});

Parameter passing

Parameter passing is supported when the closure is defined, for example:

Route::get('hello/:name', function ($name) {
    return 'Hello,' . $name;
});

The name of the dynamic variable defined in the rule routing is Parameter names in closure functions, in no particular order.

Therefore, if the URL address we visit is:

http://serverName/hello/thinkphp

, the result output by the browser is:

Hello,thinkphp

Dependency Injection

You can use dependency injection in closures, for example:

Route::rule('hello/:name', function (Request $request, $name) {
    $method = $request->method();
    return '[' . $method . '] Hello,' . $name;
});