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PHP | ReflectionClass isInterface() Function

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  • Last Updated : 17 Dec, 2019
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The ReflectionClass::isInterface() function is an inbuilt function in PHP which is used to check the specified class is an interface or not.

Syntax:

bool ReflectionClass::isInterface( void )

Parameters: This function does not accept any parameters.

Return Value: This function returns TRUE if the specified class is an interface, otherwise FALSE.

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

Program 1:




<?php
  
// Initializing a user-defined interface Departments
interface Departments {
    public function CSE();
}
  
// Using ReflectionClass() over the
// user-defined interface Departments
$class = new ReflectionClass('Departments');
  
// Calling the isInterface() function
$instance = $class->isInterface();
  
// Getting the value true or false
var_dump($instance);
?>


Output:

bool(true)

Program 2:




<?php
  
// Initializing a user-defined class TestInterface
Class TestInterface {
}
  
// Using ReflectionClass() over the
// user-defined class TestInterface
$class = new ReflectionClass('TestInterface');
  
// Calling the isInterface() function and
// getting the value true or false
var_dump($class->isInterface());
?>


Output:

bool(false)

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

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