PHP object-oriented magic methods include: __construct(), __destruct(), __call(), __callStatic(), __get(), __set(), __isset(), __unset(), __sleep(), etc. wait.
What is the magic method?
Magic method refers to a method that starts with __ (two underscores) and is automatically called by the system at a specific time.
PHP currently has 15 magic methods:
1. __construct(), which is called when constructing an object and is often used for initialization
2. __destruct(), is called when the object is explicitly destroyed or the script ends or the display is destroyed
3. __call(), when a non-static method that cannot be directly accessed is called in the object, __call() will be automatically called.
4. __callStatic(), called when calling an inaccessible method in static mode
5. __get(), when calling an attribute that cannot be directly accessed outside the class, this function The method is automatically called and must have a return value, so the final end must be the return statement
6, __set(). When setting attributes in the class that cannot be directly accessed, this function method is automatically called. No need Return value
7, __isset(), determines whether the attributes in the class are set. When isset() or empty() is called on an inaccessible attribute, __isset() will be called. Returns a Boolean value
8, __unset(), is called when unsetting an inaccessible or non-existent attribute
9, __sleep(), when executing serialize(), this will be called first Function methods are often used to submit uncommitted data
10, __wakeup(), and are often used in deserialization operations, such as re-establishing database connections, or performing other initialization operations
11, __toString (), when outputting an object of a class in string format, is automatically called by default. There must be a return statement, and the returned value must be a string
12, __invoke(), When trying to call a function When calling an object, the __invoke() method is automatically called.
13. __set_state(), since PHP 5.1.0, this static method will be called when calling var_export() to export a class.
14. __clone(), call when the object copy is completed
15. __debugInfo(), print the required debugging information
Recommended related tutorials: "PHP Tutorial》
The above is the detailed content of What are the object-oriented magic methods in PHP?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 English version
Recommended: Win version, supports code prompts!

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SublimeText3 Chinese version
Chinese version, very easy to use

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function
