Comment your PHP code in Netbean

IDE: Netbean

<?php
    /**
     * Sum function
     * @author huypv
     * @param int $first
     * @param int $second
     * @param int $next Optional
     * @return int Sum of all params
     */
    function sum($first, $second) {
        $ret = $first + $second;
        for($i = 2 ; $i < func_num_args(); $i++) {
            $ret += func_get_arg($i);
        }
        return $ret;
    }
    
    echo sum(1, 2, 3);