The ReflectionClass::getConstant() function is an inbuilt function in PHP which is used to return the value of the defined constant.
Syntax:
mixed ReflectionClass::getConstant( string $name )
Parameters: This function accepts a parameter Name which is the name of the defined constant.
Return Value: This function returns the value of the defined constant.
Below programs illustrate the ReflectionClass::getConstant() function in PHP:
Program 1:
<?php   // Declaring a class named as Department class Department {           // Defining a constant     const First = "CSE";       }   // Using the ReflectionClass() function // over the Department class $A = new ReflectionClass('Department');   // Calling the getConstant() function over // First constant $a = $A->getConstant('First');   // Getting the value of the defined constant print_r($a); ?> |
Output:
CSE
Program 2:
<?php     // Declaring a class named as Company class Company {             // Defining a constant     const First = "neveropen";     const Second = "GFG";     const Third = "gfg";         }     // Using the ReflectionClass() function // over the Company class $A = new ReflectionClass('Company');     // Calling the getConstant() function over // the defined constants and // getting the value of the defined constants print_r($A->getConstant('First')); echo("\n"); print_r($A->getConstant('Second')); echo("\n"); print_r($A->getConstant('Third')); ?> |
Output:
neveropen GFG gfg
Reference: https://www.php.net/manual/en/reflectionclass.getconstant.php
