@kows

I tried your codes but it give me this error

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Los_Angeles' for '-7.0/DST' instead in C:\xampp\htdocs\Comment\ajax_server.php on line 10
And that is pointing in this line

Code:
$date_added = date("l j F Y, g:i a");
And no data saved into database.