What does php magic method do?

The functions of php magic methods: 1. "__construct()" is automatically called when instantiating the object; 2. "__destruct()" is automatically called when the object is destroyed or the script execution ends; 3. "__call()" Automatically called when calling a method that does not exist on the object; 4. "__get()" is automatically called when obtaining attributes that do not exist in the object; 5. "__set()" is automatically called when setting attributes that do not exist in the object; 6. "__isset()" "Automatically called when detecting whether a certain attribute of the object exists, etc.

The operating environment of this tutorial: Windows 7 system, PHP 8 version, DELL G3 computer.

The role of php magic methods:

1, __construct(): Automatically called when instantiating an object.

2, __destruct(): Automatically called when the object is destroyed or the script execution ends.

3, __call(): This function is executed when calling a method that does not exist on the object.

4, __get(): Execute this function when obtaining non-existing attributes of the object.

5, __set(): Execute this function when setting attributes that do not exist in the object.

6, __isset(): This function is executed when detecting whether an attribute of the object exists.

7, __unset(): Execute this function when destroying an attribute of the object.

8, __toString(): Execute this function when outputting the object as a string.

9, __clone(): Execute this function when cloning an object.

10, __autoload(): When instantiating an object, when the class does not exist, execute this function to automatically load the class.

11, __sleep(): serialize is called before, you can specify the object attributes to be serialized.

12, __wakeup: Unserialize is called before and can perform object initialization.

13, __set_state(): Called when var_export is called. Use the return value of __set_state as the return value of var_export.

14, __invoke(): This method is executed when using the object as a function. This is generally not recommended.

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