PHP Form Validation

Hello,
i need validator like below
<?php
require_once('Validation.php');
$val = new Validation;
$val->value($_POST['name'])->format('text')->required();
$val->value($_POST['name'])->format('int')->required();
if($val->isSuccess()){
echo 'Validation ok!';
}else{
echo 'Validation no!';
}
?>
I dont want ready class. i want it from begening.
max budget 5 dollars