PHP | ReflectionClass isFinal() Function

The ReflectionClass::isFinal() function is an inbuilt function in PHP which is used to check the specified class is final or not. Syntax:

bool ReflectionClass::isFinal( void )

Parameters: This function does not accept any parameters. Return Value: This function returns true for the success or false on failure. Below programs illustrate the ReflectionClass::isFinal() function in PHP: Program 1: php

<?php

// Defining a non final class
class GFG {}

// Defining a final class
final class GeeksforGeeks {}

// Using ReflectionClass over the 
// Non final class GFG
$B = new ReflectionClass('GFG');

// Calling the isFinal() function
$C = $B->isFinal();

// Getting the value true or false
var_dump($C);

?>

Output:

bool(false)

Program 2: php

<?php

// Defining a non final class
class GFG {}

// Defining a final class
final class GeeksforGeeks {}

// Using ReflectionClass over the 
// final class GeeksforGeeks
$B = new ReflectionClass('GeeksforGeeks');

// Calling the isFinal() function
$C = $B->isFinal();

// Getting the value true or false
var_dump($C);

?>

Output:

bool(true)

Reference: https://secure.php.net/manual/en/reflectionclass.isfinal.php