dynamic data?

[ideasworking]

Hello,

Is there anyway using PHP to have a calculated value updated on a page as a value is entered into a text box? What I want is basically three text boxes. A) Yesterdays value B) Todays value C) The difference.

I'm sure this can be done with java but I don't have a clue of how to write java... and I'm still new to PHP.

Thanks,
Lou

 

[jpadie]

yes and no.

remember php is a server side process. it can not interact on its own with the desktop.

having said that you could use an intermediary, such as javascript (note that this is radically different to java), to interact with the server process (php) and display the result on the page. This could be done by AJAX or by causing javascript to submit the today and yesterday results in a form and using php to calculate the difference and display the result to the browser.

but for this you would probably not want to do this. Javascript can easily calculate the difference and display it for you.