Php-laravel interface request parameter retrieval (multiple ways)

• Previous article phP-Laravel routing usage (detailed).

A list,

• Route parameters are configured in the previous route, but it is not suitable for carrying a large amount of request data.

  Route::get('req/{parameter name}', function ($parameter name) {return 'get request '; });Copy the code

• Will usually take at the end of the request link parameters, such as: http://www.dzm.com:8088/req?id=10&name=dzm,? The attached parameters.

• Laravel offers a variety of ways to access data.

Ii. Method 1:Input

• Get data from the Input class (use Illuminate\Support\Facades\Input;) Here are just a few commonly used ones.

  // Get the specified parameter with the default value Input::get(' parameter name ', 'default value (effective when the parameter is not passed)'); // Get all user Input::all(); // Get Input::only([' parameter name ']); Input::except([' parameter name ']); // Check whether Input::has(' parameter name ') exists; .Copy the code

• For example, get the ID field of the interface. If the id field does not exist, the default value is 0.

  / / such as: the Route: http://www.dzm.com:8088/req?id=10: get (' the req ', function () {return Input: : get (' id ', 0); }); Public function index() {// Can use Input return Input::has('id')? 'exist' : 'do not exist '; }Copy the code

• Note:

  Return $Input ->get('id', 0); return $Input ->get('id', 0); }); Route::get('req', function (Request $Request)) {return $Request ->get('id', 0); });Copy the code

3. Method 2:Request

• Use the Request class to retrieve data (use Illuminate\Http\Request), which lists only the commonly-used ones.

  Request::get(' parameter name ', 'default value (effective when the parameter is not passed)'); Request::all(); Request::only([' parameter name ']); Request::except([' parameter name ']); Request::has(' parameter name '); Request::isMethod(' Request method (get, POST, PUT...) ') // Determine the Request type (this can be determined when an interface supports multiple Request methods.) '); .Copy the code

• Web.php uses:

  // Use Request:: Do not import use Illuminate\Http\Request; Route::get('req', function () { return Request::has('id') ? 'exist' : 'do not exist '; }); // To use $request, you must import use Illuminate\Http\ request; Route::get('req', function (Request $request) { return $request->has('id') ? 'exist' : 'do not exist '; });Copy the code

• The controller (for example, logincontroller.php) uses:

  <? php namespace App\Http\Controllers; use Illuminate\Http\Request; use Illuminate\Support\Facades\Input; Class LoginController extends Controller {public function index(Request $Request) { $request // return request ::has('id')? 'exist' : 'do not exist '; // Return Input::has('id')? 'exist' : 'do not exist '; Return $request->has('id')? 'exist' : 'do not exist '; }}Copy the code

• Routing parameters – Pay attention to details

  $request ::get('req/{tag? }', function ($tag = '') { return $tag; }); $request ::get('req/{tag? }', function (Request $request, $tag = '') { // return $request->has('id') ? 'exist' : 'do not exist '; return $tag; });Copy the code

Iv. Mode 3:request()

• Request () is used as an auxiliary function, without importing any libraries or namespaces.

  The request() function returns a Request object, so the methods available are the same.

  Request ()->get(' parameter name ', 'default value (effective when the parameter is not passed)'); Request ()->all(); Request ()->only([' parameter name ']); Request ()->except([' parameter name ']); Request ()->has(' parameter name '); Request ()->isMethod(' request method (get, POST, put...) ') '); .Copy the code

• If you need more methods available for this object, you can print all available methods for that object.

  dump(get_class_methods(request()));
  Copy the code