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PHP ReflectionClass getConstant () function

Syntax:
mixed ReflectionClass::getConstant (string $name)
Parameters:This function takes a Name parameter,which is the name of a specific constant.Return value:This function returns the value of a specific constants.The following programs illustrate the ReflectionClass::getConstant() function in PHP:Program 1:  
// Declaring a class named Department class Department { // Definition constants const First = " CSE " ;  
}  
// Using the ReflectionClass() function
// above the class department $A = new ReflectionClass ( ’Department’ );  
// Call the getConstant() function // First constant $a = $A -> getConstant ( ’First’ );  
// Get the value of a specific constant print_r ( $a ); ?>
Output:
CSE
Program 2:  
// Declaring a class named Company class Company { // Define a constant const First = "GeeksforGeeks" ; const Second = "GFG" ; const Third = "gfg" ;  
}  
// Using the ReflectionClass() function
// above the class company $A = new ReflectionClass ( ’Company’ );  
// Call the getConstant() function // certain constants and
// get the value of certain constants print_r ( $A -> getConstant ( ’First’ )); echo ( "" ); print_r ( $A -> getConstant ( ’Second’ )); echo ( "" ); print_r ( $A -> getConstant ( ’Third’ )); ?>
Exit:
GeeksforGeeks GFG gfg
Link: https://www.php.net/ manual / en / reflectionclass.getconstant.php

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