Three methods of obtaining parameters in ThinkPHP6

The following tutorial column of thinkphp framework will introduce to you three methods of obtaining parameters in ThinkPHP6. I hope it will be helpful to friends in need!

##There are many ways to get parameters in ThinkPHP6, and there are There are many tips to use. Many novices often know one method. Later, when looking at other people's code, they find the second and third methods, and they are confused...

Let's take a look at ThinkPHP6 There are many ways to get parameters.

Let us first assume that there is the following url:

A:http://www.a.com/index/index/hello/id/1.html

B: http://www.a.com/index/index/hello?id=1

C:http://www.a.com/index/index/hello?name=12aa

D:http://www.a.com/index/index/hello?name=aa123dd

First type: dependency injection

dump($ this->request->param());//All parameters, return array

array:1 [
  "name" => "1"
 ]

dump($this->request->param('id'));//Specific parameters , returns the string

dump($this->request->get('id'));//Only valid for type B url

dump($this-> request->param('name','aaa'));//If no name parameter is passed, set the default value and return the string aaa

dump($this->request->param ('name','1','intval')); Convert the received parameters to integer type. Type A URL returns the default value 1, type C URL returns 12, and type D URL returns 0

Second: Use the helper function

var_dump(input('id'));//Both Class A url and Class B url return string 1. If Class C url and Class D url are not passed, NULL will be returned

The third method: static acquisition

Introduce use think\facade\Request;

before use

Check whether the variable is set:

Request::has('id','get');Both class A url and class B url return true, class C url and class D url return false

Request::has('name','post'); Check whether there is a posted name and return true or false

Request::param('name');// Get The name variable of the current request, returns a string, does not pass the output null

Request::param(); // Get all variables of the current request (filtered)

Request::param( false);//Get all unfiltered variables of the current request

Request::param(['name', 'email']);//Get some variables

Finally:

In addition, in some cases, we also need to determine what the request is,

For example:

if($request->isPost()){
    //判断是否是post请求}

Similar situations are

$request->isGet()、\mathrm{}$The above are the various ways to obtain parameters in ThinkPHP6. It may not be comprehensive, but mastering these can basically satisfy the parameter acquisition in most situations...

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