php implements and extends

Extends is inheriting a classMethods that can use the parent class after inheritanceYou can also override methods of the parent class Implements is the implementation of multiple interfacesThe method of the interface is generally emptyMust be

Extends is inherited from a class, can use the parent class's methods after inheritance, or you can override the parent class's methods, inheriting the parent class, as long as the class is not declared final or the class is defined as abstract to

Interfaces and implements in PHP object-oriented development ). The application keywords of interfaces in php are interface and implements. interfaces are special abstract classes whose member attributes are all abstract or constants. let's look at

PHP, a nested abbreviated name, is an abbreviation for the English Super Text preprocessing language (Php:hypertext preprocessor). PHP is an HTML embedded language, PHP and Microsoft's ASP quite a bit similar, is a server-side implementation of

The number of PHP components and frameworks is incredibly large. There are mega-frameworks like Symfony and Laravel, as well as miniature frameworks like Silex and slim. There are even traditional frameworks that have existed long before modern PHP

Template Inheritance (Content page Inherits master page): Implements code reuse. Resolving code reuse issues:Scenario 1: Use include all (include the equivalent of copy and paste, which will form a large number of the same page, occupy

PHP class is a single inheritance, that is, do not support multiple inheritance, when a class requires multiple classes of functionality, inheritance is powerless, and for this reason PHP introduced the class interface technology. The following

The application keywords of interfaces in php are interface and implements. interfaces are special abstract classes whose member attributes are all abstract or constants. let's look at several instances. Class interface The application keywords of

PHP class is a single inheritance, that is, do not support multiple inheritance, when a class requires multiple classes of functionality, inheritance is powerless, and for this reason PHP introduced the class interface technology. The following

PHP class is a single inheritance, that is, do not support multiple inheritance, when a class requires multiple classes of functionality, inheritance is powerless, and for this reason PHP introduced the class interface technology. The following