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PHP definition and inheritance usage class

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PHP definition and inheritance usage class Mainly introduces the definition and inheritance usage of PHP classes. The examples analyze the basic definition of classes in PHP and the usage skills of inheritance. Friends who need it can refer to it. I hope this article will be helpful to you. Everyone's php programming helps.

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PHP class inheritance: correctly call the parent class constructor and pass parameters

22 Aug 2025

This article discusses in detail how subclasses correctly call the parent class constructor and pass the required parameters in PHP class inheritance. When a subclass defines its own constructor, if the parent class constructor requires parameters, these parameters must be explicitly passed to the parent::__construct() method, otherwise it will cause a runtime error. The article guides developers to avoid such common pitfalls through specific examples and best practices, ensuring that the initialization logic in the inheritance chain is executed correctly.

PHP class inheritance: Correctly handle subclass constructor and parent class parameter passing

23 Aug 2025

This article explains in detail how to correctly call the parent class constructor and pass parameters in PHP class inheritance when the subclass overrides the constructor. It is important to point out that if the parent class constructor requires parameters, the subclass must provide these parameters when calling parent::__construct(), otherwise it will cause a runtime error. Through code examples, the correct practical methods are clearly demonstrated, aiming to help developers avoid common inheritance traps and ensure the integrity and stability of program logic.