onclick event

[mundetas]

Can someone please help. I have a rollover image and when you click it takes you to a page. But I want it to remain on the same page. I want it to display data from a db. But should appear on the same page where the button is. So on click I want it display the echo in my function. Not on body load but only on the click event. I tried using a session but when the page loads it still appears. my code kinda looks like this. "onClick="<? test(); ?>" " inside that a href of the rollover please help :(

[Menster]

Hi there,

The problem is that php is pre-processed, ie all of the php code is run before a page is served to the client and therefore, you cannot add interactivity to a page (like with the onXXXX event handlers of html elements) with php. You need to use a client side scripting language like Javascript. If you really need to use server side stuff to do the job, then you'll have to use AJAX to handle the request.

[mundetas]

Are there any other techniques that can be used

[Menster]

Well, not really. You need to handle the intitial request (the client clicking on the button/link) with a javascript or other client side scripting language. You can not call a php function directly from that event, if you need to run a php function, you'll need to write an AJAX function (which is javascript, but in a unique methodology) to request that function be run by the server.