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 classParameters: Custom#__destruct:
Function: Destroy the object of the classCall: 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 nameProtection mechanism
#__call:
Function: It plays a protective role when calling non-existent member methodsCall: 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 methodCall: Called when a non-existent static member method is calledParameters: function name, parameter list (enumeration array)__get:
Function: Protective when getting a non-existent propertyCall: Called when trying to get a non-existent propertyParameter: variable name__set:
Function: to protect when assigning a value to a non-existent attribute__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.Related articles:
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What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
