Stripping Post Data to a Text File

what I want to do is strip post data and write into a text file. I think I have a working script but its not working correctly.

<?php
if (isset($_POST['Data1']) && (isset($_POST['Data2']))) {
$Data1 = trim(strip_tags($_POST['Data1']));
$Data2 = trim(strip_tags($_POST['Data2']));

$master = fopen('textfile.txt', 'a+', 1);
$text="$Data1:$Data2:";
fwrite($master, strip_tags(stripslashes($text)));
fclose($master);
echo'<script type="text/javascript">document.location.href=\'http://google.com'</script>\'">';

}
?>

PHP:

and everytime i send something through the text file, it will strip the data1 and data2 information and write it on the next line, as so
Data1ata2
Data1ata2
Data1ata2
and i also forgot to mention, the google is there because I want it to go to a website afterwards.

 

change

$text="$Data1:$Data2:";

Code (markup):

to

$text="$Data1:$Data2:\n";

Code (markup):

 

i'm assuming that makes a new line?
the whole code still doesn't work. not sure of the problem.

 

i'm also having another problem. when using the code
php
header("Location: http://www.google.com")
it will go to there. what i need is for it is to go to a frame titled I1.
using html it would be
<a href="index.html" target="I1"> using the php header location or some header, how can I just make it go to index.html , confusing I know sorry.
basically i have a website in a frame. and inside one of the pages is a form, whicfh you type something in and submit, the data is written into a text file, and afterward it redirects you to a webpage. i need a way to go to that new webpage, but inside the frame still. thank you.

 

Use these parameters for fopen

$master = fopen('textfile.txt', 'a');

PHP:

You are not reading it, why make it read and write?