er yes.
if you post data to a PHP page,- it will be available as normal variables within the script.
If you want to then post them on again, this is also fine.
you can then setup the form on any subsequent pages to contain the data ready to be POSTed to the next page. Either in hidden fields, or whatever (I think some browsers support a non-editable text field if this is what you are after... not sure what or how off the top of my head though.)
Sorry for the schoolboy example:
(hmmm, hopes this will render okay...)
page1.php
<form action="page2.php" method="post">
Enter your name: <input type="text" size="20" value="" name="my_name><P>
Enter your friends name: <input type="text" size="20" value="" name="friends_name">
</form>
page2.php
<body>
<form action="page3.php" method="post">
<input type="hidden" name="my_name" value="<?php echo $my_name; ?>">
<input type="text" name="friends_name" value="<?php echo $friends_name; ?>">
<input type="text" value="" name="my_age">
<input type="text" value="" name="friends_age">
</form>
</body>
page3.php
<body>
<?php
echo "My name is ".$my_name. I am $my_age years old."<BR>";
echo "My friends name is: ".$friends_name. (S)he is $friends_age years old!"<BR>";
?>
</body>
woohoo what fun 😉
Hope that helps,
Steve