How to define variables in thinkphp5 method

In ThinkPHP5, defining variables is a very common and essential operation. Variables can be used not only within a method but also throughout the controller.

There are two ways to define variables in ThinkPHP5:

1. Define variables through the properties of the controller:

In ThinkPHP5, you can Define the properties of the variable in it for use in every method in the controller. This method is very simple, just add an attribute before the controller's class declaration.

use think\Controller;

class Index extends Controller{
    protected $name = 'ThinkPHP5';

    public function index(){
        echo 'Hello ' . $this->name . '!';
    }
}

In the above example, the $name variable is defined as follows:

protected $name = 'ThinkPHP5';

You can directly use $this->name in the controller method to access the variable .

2. Pass variables through methods:

In addition to defining variable properties in the controller, you can also pass variables in methods. This method allows us to dynamically pass parameter values ​​to the method and use them in the method.

The following is a simple example:

public function index($name='ThinkPHP5'){
    echo 'Hello ' . $name . '!';
}

In the above example, we define a $name variable to store the string to be printed. This variable can be passed as a method parameter. If the value of $name is not set in the method parameter, the default value of the variable is "ThinkPHP5".

Call this method in the controller:

public function index(){
    $this->index();
}

You can directly call the index() method in the controller method and pass the parameters for use.

Summary:

In ThinkPHP5, defining variables is very important and can help us manage and call variables. With the above two methods, you can easily define variables and use them in controllers and methods. Using these variables allows you to write more flexible and reusable code.

The above is the detailed content of How to define variables in thinkphp5 method. For more information, please follow other related articles on the PHP Chinese website!