Commonly used magic methods in php

I have compiled some PHP magic methods that are often used during the development process. I hope they will be helpful to everyone.

Magic method is a predefined function with special purpose in PHP (will be triggered under certain conditions). It can be said to be a convention for grammar conversion;

Magic method They all start with a double underscore, such as __construct(), __destruct(), etc.;

## Commonly used magic methods:

__construct,__destruct,__get,__set,__toString

__construct:

Function: Initialize the object of the class

Call: Called when creating an object of the class

Parameters: Custom

#__destruct:

Function: Destroy the object of the class

Call: When all references pointing to the object of the class are invalid, the condition for being called is met, waiting for the call of the php parser

Parameters: Object name

Protection mechanism

#__call:

Function: It plays a protective role when calling non-existent member methods

Call: Calling does not When an existing member method is called

Parameters: function name, parameter class table (enumeration array)

__callStatic

Function: The call does not exist It plays a protective role when calling a static member method

Call: Called when a non-existent static member method is called

Parameters: function name, parameter list (enumeration array)

__get:

Function: Protective when getting a non-existent property

Call: Called when trying to get a non-existent property

Parameter: variable name

__set:

Function: to protect when assigning a value to a non-existent attribute

Call: when When trying to assign a value to a property that does not exist

Parameters: variable name, value

__toString:

Role: a class (object ) is treated as a string. How to respond to the

call: Called when trying to output a class object.

The above are some commonly used magic methods in PHP that I have compiled. If you leave a comment, you can add some other methods.

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