Hello folks!

I am working on a project that has livestreams. I want users to be able to chat with each other. Users can login into the chat and then post messages.

For this I have set up a login handler (nothing special). If logged in a user can post a message (focusing the input and hitting enter or clicking the "go"-button).

If this is done I do a POST request to ajax/chat/postMessage.php and write that message into the database. No problem so far.

The problem I am concerning about is this: A "getter" is called (ajax/chat/getter.php?last=) that will return last x messages if no lastId is present or waits(!) for messages to be inserted from a user. This can be done like this: while(1) { $qry... if($num_rows) { echo json ; break; } sleep(); }. This is useful because the user does not have to query the server for new messages within a fixed interval (like 1 sec) - but he get's the messages when new are present + instantly! I will also include a time limit (set_time_limit(...)) so the scripts ends some time (this part is done already).

My problem is that I concern about server's performance. I have a lighttpd server with php5-cgi in the background. As far as I know the php5-cgi handlers (10 at the moment) will handle all requests that come in. But what if there are > 10 Users in the chat, waiting for messages, does the php5-cgi handlers wait until older requests are finished OR do they process other requests while others are sleeping?

Does anyone of you have experience with this?

Hey everyone,

i am currently recoding my forum module of my CMS. In the first version I saved many things in cookies. Which I never liked. I am thinking about saving statuses of when a user last visited a topic in the database.

My idea so far: Have a table that saves all last views of topics attached to a user's ID and the date. After that I can compare the last post's datetime from a topic to any user. This way I can check if a topic has new posts.

For the boards i would query onto all topics in the forum and check if there is one topic missing or has a newer date of its last post.

One more thing I would add is that if all topics are finally read in a board, an automated "mark all" entry is put into database that marks all topics read in a forum. That way it might be easier to check only the latest post in a board.

Have you better solutions?

Best Regards Robert

Hey everyone,

I am currently trying to get a specific HTML Element (by ID) from an AJAX Request I made.

The request can be made via GET or POST. Returned is a HTML String and I want to get a specific Element (it's innerHTML value) from it.

I tried to make a XMLObject out of it and tried Ext.DomQuery but nothing seems to be working so far.

The main problem is I can't attach it to the document itself because the ID I try to query may be in the document itself.

I'd appreciate any kind of solution!

Yours Robert

Hello everyone,

I have been thinking about this problem a long time now and I didn't find a good solution so far.

The problem is the following:

In a forum or comments system (e.g news, gallerie, etc) users should be able to reply/answer to a post and so I need to get all subposts of a post/comments (via MySQL).

If there is only one level I could just query for subqueries of the current page's post - no problem here (I'd guess - maybe there's a better solution?)

But what if there is a higher number of levels to be allowed to reply to a reply of a reply (...) ? I couldn't think of a nice solution here.

Do you have any experience or suggestions here?

Thanks Robert

I just had a little idea this morning and I wanted to share it with you.

The basic idea is, that I hate captches and probably most of you do as well. And so I came up with this idea. I thought about the fact, that the main difference between bots and humans is their interactivity on a website.

That's why I wanted to put eventListeners on the website and even some of the form elements and check the score.

Basicalle I have "captures" that can be loaded individually. Each capture adds +1 to a hidden input field. When the event occurs, the hidden input field will be decresed and another one will be incremented. If no events occur, but the bot has javascript enabled, there will be a high count in one of the field but actually there were no interactions.

This is kind of a double check to see how many captures there were in the form (e.g for your PHP Script).

This is the test site i've set up this morning:

rhscripts.de/…

Captures are at the moment: scrolling, mouse movement, focus, tabbing, key down and clicking to input fields.

My questions is, what do I do if there is no JavaScript enabled, how to detect spam anyway or do you have other cool ideas to do a "hidden" spam detection the user is not invoked in? I could maybe give the user a message that he was clarified as spam and he should do further steps to proof he's not? e.g a simple link, confirmation email, other thoughts and ideas are appreciated!

Also I would like to hear your feedback on that idea.

Best Regards Robert

I am willing to start a project that tests my website for me (fill out forms, make page requests etc).

Any ideas on a name for it? could include test case and web or even a fantasyname like "cabadoodle".

Thanks for any ideas! :)