How to implement multiple interfaces in php

How to implement multiple interfaces in php: 1. Create a PHP sample file; 2. Create "interface staff_i1{...} interface staff_i2{...}"; 3. Pass "class staff implements staff_i1, staff_i2{...}" method can be used to implement the interface.

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, DELL G3 computer

How to implement multiple php interfaces

The code is as follows:

<?php 
  interface staff_i1 //接口1 
  { 
   function setID($id); 
   function getID(); 
  }   
  interface staff_i2 //接口2 
  { 
   function setName($name); 
   function getName(); 
  }     
  class staff implements staff_i1, staff_i2 //接口的实现 
  { 
   private $id; 
   private $name; 
   function setID($id) 
   { 
     $this->id = $id; 
   } 
   function getID()  
   { 
     return $this->id; 
   } 
   function setName($name)  
   { 
     $this->name = $name; 
   } 
   function getName()  
   { 
     return $this->name; 
   } 
   function otherFunc() 
   { 
    echo "Test"; 
   } 
  } 
?>

Note:

Using interface (interface), you can specify which methods a certain class must implement, but you do not need to define the specifics of these methods. content. Since interfaces, classes, and traits share a namespace, they cannot have the same name.

The interface is defined just like defining a standard class by replacing the class keyword with the interface keyword, but all methods are empty.

All methods defined in the interface must be public, which is a characteristic of the interface.

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