Is it bad practice to write to $_POST?

Question

If this is file_1.php

Answer 1

The $_POST should only be used with forms not like this:

$_POST["test_message"] = "Hello, world";

You also need to make sure that you avoid any security risks, use functions like stripslashes and mysql_real_escape_string (when inserting data in database)

To maintain state between pages, you need to use the sessions instead.