Question

I’m making a comment box. but i want so when people click submit comment, then they time get logged into mysql togheter with the other info i logg. heres the code i use:

if(isset($_POST['btnRegister'])) //===When I will Set the Button to 1 or Press Button to register
{
$query = mysql_query("SELECT * FROM comment WHERE username='$username'");
if(mysql_num_rows($query) > 5 ){
echo "Slow down! you can only send 5 comments a day";

}else{

mysql_query ("insert into comment(username,comment)values('$username','$comment')");
header('location: succes_comment.php');
}
}
?>

so if a user clicked that, then the mysql time colonnum got the username, comment and the time he sent the comment.

Answer 1

you need to add the datetime column in your database. lets name it ‘time_posted’ Then when you insert a row you do it like this:

 insert into comment(username,comment, time_posted)values('$username','$comment', NOW())

and when you check that a user submits at most, let say 1 comment in a minute, you do this :

  SELECT username FROM comment WHERE username='$username' and time_posted = DATE_SUB(NOW(), INTERVAL 1 MINUTE)

so you will get the amount of messages he placed in the last minute, and by that you can prevent him from posting more.