PHP | ReflectionClass getConstants() Function
The ReflectionClass::getConstants() function is an inbuilt function in PHP which is used to return an array of the specified constant names.
Syntax:
array ReflectionClass::getConstants( void )
Parameters: This function does not accept any parameter.
Return Value: This function returns an array of the specified constant names.
Below programs illustrate the ReflectionClass::getConstants() function in PHP:
Program 1:
<?php // Declaring a class named as Company class Company { // Defining some constants const First = "zambiatek"; const Second = "GFG"; } // Using the ReflectionClass() function // over the Company class $A = new ReflectionClass('Company'); // Calling the getConstants() function $a = $A->getConstants(); // Getting an array of the constants print_r($a); ?> |
Output:
Array
(
[First] => zambiatek
[Second] => GFG
)
Program 2:
<?php // Declaring a class named as Departments class Departments { // Defining some constants const First = "CSE"; const Second = "ECE"; const Third = "EE"; const Fourth = "Mechanical"; } // Using the ReflectionClass() function // over the Departments class $A = new ReflectionClass('Departments'); // Calling the getConstants() function $a = $A->getConstants(); // Getting an array of the constants print_r($a); ?> |
Output:
Array
(
[First] => CSE
[Second] => ECE
[Third] => EE
[Fourth] => Mechanical
)
Reference: https://www.php.net/manual/en/reflectionclass.getconstants.php
