PHP | ReflectionClass implementsInterface() Function

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The ReflectionClass::implementsInterface() function is an inbuilt function in PHP which is used to check the specified interface is present or not.

Syntax:

bool ReflectionClass::implementsInterface( string $interface )

Parameters: This function accepts a single parameter $interface which holds the specified interface which are being checked.

Return Value: This function returns true on success or false on failure.

Below programs illustrate the ReflectionClass::implementsInterface() function in PHP:

Program 1:

<?php 
  
// Defining some interfaces 
interface Colleges { } 
interface Departments { } 
interface Students { } 
interface Companies { } 
  
// Initialising a class of Interfaces 
class Interfaces implements Colleges,  
        Departments, Students, Companies { } 
  
// Using ReflectionClass over the class Interfaces 
$A = new ReflectionClass("Interfaces"); 
  
// Calling the implementsInterface() function 
// over the Interface 'Colleges' 
$B = $A->implementsInterface('Colleges'); 
  
// Getting the value true or false 
var_dump($B); 
?> 

Output:

bool(true)

Program 2:

<?php 
   
// Defining a SuperClass interface Company  
interface Company { 
    public function GFG(); 
} 
  
// Defining a different interface Company1 
interface Company1 { 
    public function zambiatek(); 
} 
  
// Defining a subclass Departments 
class Departments implements Company { 
    public function GFG() {} 
} 
  
// Using ReflectionClass() over the  
// subclass Departments 
$reflect = new ReflectionClass('Departments'); 
  
// Calling implementsInterface() function 
$A = $reflect->implementsInterface('Company1'); 
  
// Getting the value either true or false 
var_dump($A); 
  
?> 