PHP

php iife

(function() { echo "yes, this works in PHP 7.
"; })();

iife in php

<?php
function GFG($value)
{
    echo "This is $value site.
";
}
  
call_user_func('GFG', "GeeksforGeeks"); // 	outputs `This is GeeksforGeeks site` 
call_user_func('GFG', "Content"); 		// 	outputs `This is Content site` 
  
?>