How to get URL in Yii2 framework

1. Get the host information in the url:

For example:

Yii::$app->request->getHostInfo();

Result:

2. Get the path information in the url (excluding host and parameters):

For example:

Yii::$app->request->getPathInfo()

Result: product/2.html

3. Get the url that does not contain host information (including parameters):
For example:

Yii::$app->request->url

Result: product/2. html?isnew=1

4. Get the complete url (including host and parameters):

For example:

Yii::$app->request->getHostInfo().Yii::$app->request->url;

Result:

5. Just want to get the parameter part of the url:
For example:

 Yii::$app->request->queryString

Result: isnew=1

6. Get the value of a certain parameter, such as id
For example:

Yii::$app->request->getQueryParam('id')

Result: 12345

　

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