Determining the Source of $_Post
===

Is there an easy way to find out the source of a post variable in PHP?


###Form on example.com/formone.php

    <form method="post" action="test.php">
    <input name="myusername"type="text">
    <input name="mypassword" type="password">
    <input type="submit">
    </form>

###Form on example.com/formtwo.php

    <form method="post" action="test.php">
    <input name="myusername"type="text">
    <input name="mypassword" type="password">
    <input type="submit">
    </form>

I understand that I could use a hidden input, but I was wondering if PHP had a method to test the source of the POST.