Dirty. Didn't error check it.
Code:
<?PHP
$vars = array();
$submit = false;
if(isset($_POST["name"]))
{
$vars = $_POST;
$submit = true;
}
else if (isset($_GET["name"]))
{
$vars = $_GET;
$submit = true;
}
if($submit)
{
$fp = fopen("formdata.txt","a");
$str = $vars["name"].",".$vars["email"].",".$vars["phone"]."\n";
fwrite($fp,$str);
fclose($fp);
}
?>
<html>
<form>
........