Help with cookie

[E_ditor]

i am making a script thats very similar to a guest book.

when the page loads. if there is no cookie, then create a <input type="text" name="username">. when the user clicks submit. thats when the cookie is spose to be created . there is spose to be a message thats save to a text file, but thats no problem.

heres what i got. i need help coding it further. i also would like help on redirecting from the submitted page back to the page i want. i tried coding it but didnt seem to work. and i would like some helpful hints on trying to make php write to the top of the file without rewriting the stuff below it. i also attempted that. needless to say i couldn't code it right.

<?php
error_reporting(E_ALL);
$dir="blog/";
$fBloq="blog.txt";
$username =$_POST["username"];
setcookie("Name", $username);
$Message ="\n ".$username.": ".$_POST["Message"];
chmod($dir, 0777);
chmod($fBloq , 0777);
$ourFileHandle = fopen($dir.$fBloq, 'a+')or die("error opening or creating file");
fseek($ourFileHandle, 0);
fwrite($ourFileHandle, $Message)or die("error writing file");
fclose($ourFileHandle);
header("location: http://www.sublimeKnights.com/index.php"); 
?>

[ysu]

Let's start with your post.
If you could use correct english with punctuation it would help others enourmously in understanding you.
If you separate your problems into well defined questions, one can answer them.
Currently it's in one heap...I'll try to pick it out though.

Error tracking: try to put down what's your goal, what have you attempted, and what has happened instead of what. Where do you suspect the problem is. How did you try to fix it. You'll find that in most cases this leads to a simple solution already, or you can find it in the annoted php manual in 2 minutes.

Redirecting: you already got a header location: output. You can use the file name only for redirecting locally, helps portability too. Eg: header("location:index.php");
The redirect works, unless you have other output before that, but in that case an error should be thrown. Try setting error reporting to 255 for development, it helps to avoid other sloppy coding.

"Php writing to top of file":
if you mean re-writing part of a HTML page, I recommend AJAX. (there's a pretty good simple tutorial right here on phpbuilder.)

With the cookie I don't know what you've attempted and how it wasn't working / what help you need.

[E_ditor]

if you cant help me, then do not reply.