PHP | ReflectionClass getInterfaces() Function

The ReflectionClass::getInterfaces() function is an inbuilt function in PHP which is used to return an associative array of interfaces. These returned array is containing keys as interface names and the array values as ReflectionClass objects.

Syntax:

array ReflectionClass::getInterfaces( void )

Parameters: This function does not accept any parameters.

Return Value: This function returns an associative array of interfaces. These returned array is containing keys as interface names and the array values as ReflectionClass objects.

Below programs illustrate the ReflectionClass::getInterfaces() 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 getInterfaces() function
$B = $A->getInterfaces();

// Getting the associative array of interfaces
print_r($B);
?>

Output:

Array
(
    [Colleges] => ReflectionClass Object
        (
            [name] => Colleges
        )

    [Departments] => ReflectionClass Object
        (
            [name] => Departments
        )

    [Students] => ReflectionClass Object
        (
            [name] => Students
        )

    [Companies] => ReflectionClass Object
        (
            [name] => Companies
        )

)

Program 2:

<?php

// Using ReflectionClass
$ReflectionClass = new ReflectionClass('ReflectionClass');

// Calling getInterfaces() functions
$A = $ReflectionClass->getInterfaces();

// Getting the associative array of interfaces
var_dump($A);
?>

Output:

array(1) {
  ["Reflector"]=>
  object(ReflectionClass)#2 (1) {
    ["name"]=>
    string(9) "Reflector"
  }
}

Reference: https://www.php.net/manual/en/reflectionclass.getinterfaces.php