How do i acces a variable containing $_POST from another page?

Question

I have one html page with on top php form validation to check if the fields are empty, after that a html form and after that some html that displays a error message if fields are not filled in. The top of the form looks like:

  <form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" method="post">

In the PHP that is on top of the page, I check to see if the input fields are empty.

if($_SERVER["REQUEST_METHOD"]==='POST')
{

          if($_POST["field1"]==""){
                    $errormessage = "field1 is not empty";

           }elseif($_POST["field2"]==""){
                 $errormessage = "field1 is not empty";
            }else{
            // if the fields are both filled in i want to send the form 
            //variables to mailing.php where are the variables are mailed

}

This is the html for the errorcode that is part of my page:

If both fields are filled I want to send the POST data to mailing.php where I can format the variables into a html email.

Because i have a lot of variables I want to send the whole $_POST variable to mailing.php using:

header('location:mailing.php?post='.$_POST);

But how do i acces a varable inside the $_POST in mail.php? This did not work:

$inputfield = $_GET["post"]["field1"];

Answer 1

This is a bad design. You should include mailing.php and write a logic to access $_POST depending on some conditions. However if you still wish to forward the request, you can achieve it using cURL .

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://example.com/mailing.php");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($_POST));
$data = curl_exec($ch);
curl_close($ch);