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 = "GeeksforGeeks" ;
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:
GeeksforGeeks GFG gfg
Reference: https://www.php.net/manual/en/reflectionclass.getconstant.php