What does this line and parameters search,queryParams mean?

Question

Yii

$dataProvider = $searchModel->search(Yii::$app->request->queryParams);

Answer 1

The model has a method search
to which the request parameters are passed

Yii::$app->request->queryParams

As a result, the method returns the \yii\data\ActiveDataProvider object (for ActiveRecord)

Answer 2

$dataProvider- variable
=- assignment operator
$searchModel- access to the object contained in the variable. Usually, based on the context, this is SomeMyModelSearch, which is inherited from SomeMyModel
->search- we turn to the search method in someMyModelSearch
Yii::$app->request->queryParams- the parameters that came to the controller
This code is usually generated by standard GII to filter data through gridView, for actionIndex