Re: Tips and Tricks

> I've seen some tips on determining what browser the client is using (i.e. > parsing the HTTP_USER_AGENT), but I would like to see some information on > determining the capabilities available to the browser using PHP. > Specifically, whether the client browser has javascript enabled or disabled, > and what plug-ins are installed on the browser (such as Flash, Adobe Acrobat > Reader, RealPlayer, etc.). As far as I know, there is no way for the server to know if the client has Javascript enabled or not. Not without writing some Javascript code that explicitly tells the server that JS is enabled. Nor is there a reliable way for the server to know what plug-ins are installed. You can parse through $HTTP_ACCEPT, but I doubt that's very reliable. Again, the only way is write some Javascript code that explicitly tells the server what plug-ins are installed (assuming that Javascript has access to this information). As for some of the other capabilities, you may want to look into the get_browser() function in PHP. Keep in mind, it will only tell you if the client's browser is *capable* of Javascript ... not if they have it enabled or not. - Colin