PHP | ReflectionFunction invoke() Function

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The ReflectionFunction::invoke() function is an inbuilt function in PHP which is used to return the result of the invoked function call.

Syntax:

mixed ReflectionFunction::invoke( mixed $args)

Parameters: This function accept parameter $args which holds the list of arguments passed to the called function.

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

Below programs illustrate the ReflectionFunction::invoke() function in PHP:

Program_1:

<?php 
  
// Initializing a user-defined function 
function Company($Company_Name, $Role) { 
    return sprintf("%s %s\r\n", $Company_Name, $Role); 
} 
  
// Using ReflectionFunction() over the 
// specified function company 
$function = new ReflectionFunction('company'); 
  
// Calling the invoke() function 
$A = $function->invoke('zambiatek', 
            'is a Computer Science Portal.'); 
  
// Getting the result of the invoked function company 
echo $A; 
?> 

Output:

zambiatek is a Computer Science Portal.

Program_2:

<?php 
  
// Initializing some user-defined functions 
function Trial1($First_Args, $Second_Args) { 
    return sprintf("%s %s\r\n", $First_Args, $Second_Args); 
} 
  
function Trial2($First_Args, $Second_Args) { 
    return sprintf("%s %s\r\n", $First_Args, $Second_Args); 
} 
  
// Using ReflectionFunction() over the above 
// specified functions  
$function = new ReflectionFunction('Trial1'); 
$function = new ReflectionFunction('Trial2'); 
  
// Calling the invoke() function and getting the 
// result of the invoked function company 
echo $function->invoke('a+a', '= 2a'); 
echo $function->invoke('a*a', '= a^2'); 
?> 