Question

Im using ajax call to insertmsg.php to insert a message.

Now javascript isn’t a realtime language so i can not count on having an disabling button at the top of the ajax function.

So I wonder how I can make a timelimit to the insertmsg.php with:
mysql_query(“INSERT INTO.. , with a delay on 2 seconds, without storing last time the user wrote in the database. Or is that the only way? How can I do it with session maybe?

Answer 1

I think I understand what you want. But you English is very bad…

You want to prevent the user from sending messages at intervals smaller than 2 seconds.

You can do this both on the client side and on the server side, but the client side check can be easily disabled by a willing user.

To do it on the server side, in PHP, you need to store the time when the user last sent a message.

$_SESSION['lastMessageTime'] = time();

When a call for a new insert is made you just check

if(time() - $_SESSION['lastMessageTime'] <= 2)
    exit('Not allowed!')

Don’t forget to enable you session before using the $_SESSION variable.

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Or maybe you want your script to do the insert with a delay of 2 seconds?

You can wait in PHP with the sleep function. Or you can delay an action in JavaScript with setTimeout.