erasing txt file before writing new info

i have a script that writes the content from a textarea to a .txt file, but i want it to clear the txt file before posting new info into it......

<?php
$File = "top30message.txt";
$Open = fopen($File, "a");
if ($Open){
$message = $_GET['message'];


fwrite($Open, "$message");
fclose ($Open);
}
?>

It will rewrite the file automatically.

$Open = fopen($File, "w");

Yeah use w mode. It will automatically rewrite the file with the contents of the textarea.

how do i echo the info from a txt file?

to do this you would need to read the text file. There are many ways to do this, and this is how i usually do it:



$fh = fopen("filename.txt", "r");

while(!feof($fh)){

echo fgets($fh, 4096);

}

fclose($fh);