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This article mainly shows you how to create class methods in php. The content is simple and easy to understand. It is clearly organized. I hope it can help you solve your doubts. Let Xiaobian lead you to study and learn how to create class methods in php.

In php, you can create a class by adding the class name to the class keyword, and then wrapping the properties and methods defined in the class body with curly braces "{}"; syntax format "[modifier class keyword] class name {class properties and methods;}".

Operating environment of this tutorial: Windows 7 system, PHP7.1 version, DELL G3 computer

PHP supports object-oriented programming and supports the concept of classes and objects. From the data type point of view, objects are a special kind of data type. It is generated by a predefined class, defined by the user himself, consisting of a set of data and several functions that operate on that data.

php creates (defines) classes

In PHP, you can define a class using the class keyword plus the class name, and then wrap the attributes and methods defined in the class body with curly braces { }. The syntax of the class is as follows:

[keyword modifying class] class name { Properties and methods of class;}

Class names are similar to variable names and function names in that they follow custom naming rules in PHP and can be legal labels for any non-PHP reserved word. A valid class name begins with a letter or underscore followed by several letters, numbers, or underscores. If the class name consists of multiple words, it is customary to capitalize the first letter of each word. In addition, the class name should have a certain meaning, not just a few letters.

The keyword of the modifier class is an optional parameter and can be omitted. We usually use the following keywords to modify classes:

abstract: abstract class or method, after being decorated as abstract class, the class cannot be instantiated, but can be inherited. If at least one method in a class is declared abstract, the class must also be declared abstract. To inherit an abstract class, the subclass must redefine all abstract methods in the parent class, and access controls for these methods must be the same as in the parent class.

final: Classes modified with final cannot be inherited, and methods modified with final cannot be redefined in subclasses.

Note: A class can contain its own constants, variables (called "member properties" or "attributes" in the class), and functions (called "member methods" or "methods" in the class).

Example: Create a Students class and declare some member properties in the class, as follows:

Tip: Permission modifiers can be mixed with the keyword static, which defines static variables.

That's all for "how to create class methods in php," thanks for reading! I believe that everyone has a certain understanding, hope to share the content to help everyone, if you still want to learn more knowledge, welcome to pay attention to the industry information channel!

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