How to get the method of the current class in php (two ways)

For PHP developers, obtaining the method of the current class is a very basic but important operation. In PHP, if we need to get the method of the current class, we can do it in the following two ways.

Method 1: Use __METHOD__ magic constant

__METHOD__ is a magic constant in PHP, which can return the name of the currently executed method. Therefore, we can get the methods of the current class by using it. The following is a sample code:

class Person {
    public function getName() {
        echo __METHOD__;
    }
}

$p = new Person();
$p->getName(); //输出Person::getName

In the above example, we created a Person class and instantiated it. Then, we called the getName method of the Person class and output the value of the __METHOD__ constant in the method.

When we call the getName method, the __METHOD__ constant will return "Person::getName", which is exactly the name of the current method we need.

Method 2: Use the get_class_methods function

Another way to get the current class method is to use the PHP built-in function get_class_methods. This function can return an array of all public methods in a class, and the key name in this array is the method name, and the value is a callable object that refers to the current class instance.

The following is a sample code:

class Person {
    public function getName() {
        echo "My name is Joe";
    }
}

$p = new Person();
$methods = get_class_methods($p);
var_dump($methods);

In the above example, we created a Person class and instantiated it. Then, we use the get_class_methods function to get all the methods in the Person class and output them to the console.

When we run the above code, the return result of the get_class_methods function will be output, which is an array of all public methods in the class, as shown below:

array(1) {
  [0]=>
  string(7) "getName"
}

In this array, the key The method name is "getName" and the value is a callable object of the current class instance.

Summary

The above are two ways for PHP to obtain the methods of the current class. We can choose to use the __METHOD__ magic constant or the built-in function get_class_methods to get all the methods of the current class. For beginners, it is recommended to use the __METHOD__ magic constant to get the methods of the current class, because it is simpler and easier to understand. For PHP developers with certain experience, the get_class_methods function will be more common and practical.

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