PHP | ReflectionMethod invoke() Function

Last Updated : 17 Dec, 2019

The ReflectionMethod::invoke() function is an inbuilt function in PHP which is used to invoke the specified reflected method and returns the result of the mothod.

Syntax:

public mixed ReflectionMethod::invoke ( $object, $parameter )

Parameters: This function accepts two parameters which are illustrated below:

object: This is the initialized class object.
parameter: This is the zero or more parameters to be passed to the method.

Return Value: This function returns the result of the invoked method.

Below programs illustrate the ReflectionMethod::invoke() function in PHP:
Program_1:

<?php 
  
// Initializing a user-defined class 
class Company { 
  
    public function GFG($name) { 
        return 'GeeksforGeeks' . $name; 
    } 
} 
  
// Using ReflectionMethod() over the class Company 
$A = new ReflectionMethod('Company', 'GFG'); 
  
// Calling the invoke() function 
$B = $A->invoke(new Company(),  
          ' is a Computer Science Portal.'); 
  
// Getting the result of the invoked method. 
echo $B; 
?> 

Output:

GeeksforGeeks is a Computer Science Portal.

Program_2:

<?php 
   
// Initializing some user-defined classes 
class Department1 { 
   
    public function hr($name) { 
        return 'HR' . $name; 
    } 
} 
class Department2 { 
   
    public function coding($name) { 
        return 'Coding' . $name; 
    } 
} 
class Department3 { 
   
    public function marketing($name) { 
        return 'Marketing' . $name; 
    } 
} 
  
// Using ReflectionMethod() over the above classes 
$A = new ReflectionMethod('Department1', 'hR'); 
$B = new ReflectionMethod('Department2', 'coding'); 
$C = new ReflectionMethod('Department3', 'marketing'); 
   
// Calling the invoke() function and  
// getting the result of the invoked method. 
echo $A->invoke(new Department1(), ' is a Department.'); 
echo "\n"; 
echo $B->invoke(new Department2(), ' is also a Department.'); 
echo "\n"; 
echo $C->invoke(new Department3(), ' too.'); 
?> 

Output:

HR is a Department.
Coding is also a Department.
Marketing too.

Reference: https://www.php.net/manual/en/reflectionmethod.invoke.php,

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