Moving Page after Validation in PHP - php

Question

I want to change page after validation in PHP but, it appears on the same page with the validation.
Here is the logical process i want
if validation didnt complete/invalid input
display error messages, and user must input again in the same page.
if form is validated complete with no invalid input.
User will be moved to a new page for reviewing the inputed data.
And this is my PHP
<?php
// define variables and set to empty values
$nameErr = $emailErr = $genderErr = $websiteErr = "";
$name = $email = $gender = $comment = $website = "";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["name"])) {
$nameErr = "Name is required";
} else {
$name = test_input($_POST["name"]);
}
if (empty($_POST["email"])) {
$emailErr = "Email is required";
} else {
$email = test_input($_POST["email"]);
}
if (empty($_POST["website"])) {
$website = "";
} else {
$website = test_input($_POST["website"]);
}
if (empty($_POST["comment"])) {
$comment = "";
} else {
$comment = test_input($_POST["comment"]);
}
if (empty($_POST["gender"])) {
$genderErr = "Gender is required";
} else {
$gender = test_input($_POST["gender"]);
}
}
if($nameErr == "" && $emailErr == "" && $genderErr == "" && $websiteErr == "") {
header('Location: http://subc.chaidar-525.com');
exit();
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
I use some referance from W3School, and it makes the review of data is in the same page as the form and validation, and i want the user will be transfered to another new page for reviewing their inputed data.

Answer 1

Use a session, roughly like this:
session_start();
if($nameErr == "" && $emailErr == "" && $genderErr == "" && $websiteErr == "") {
$_SESSION['inputdata'] = $_POST;
//A neater version would be to assign all vars, like:
//$_SESSION['gender'] = $gender;
header('Location: http://subc.chaidar-525.com');
exit();
}
on the next page, use this:
session_start();
$input_data = $_SESSION['inputdata'];