<?php

class Display_Ajax{
    public function __construct(){

    }
    public function printall(){
        $var_username=$_POST["nm_username"];
        $var_password=$_POST["nm_password"];
        echo $var_username.'<br>';
        echo $var_password.'<br>';
    }
}

$var_obj=new Display_Ajax();
$var_obj->printall();
?>