Possible Duplicate:
Screenshot of current page using PHP
How to convert HTML to image with PHP , have idea!!!
Possible Duplicate:
Screenshot of current page using PHP
How to convert HTML to image with PHP , have idea!!!
In order to get an image of a web page, you need software that can render a web page (that is, lay out elements, apply styles, and so on). Such software is typically called a "browser".
It's possible to automate a browser from PHP, using COM (like in sAc's answer) on windows, for example.
If you have Python, PyQt4 and Webkit installed on your server, you can use Webkit2PNG to do this: it downloads the page, fires up the Webkit rendering engine, and takes a snapshot.
Note that this could be resource-intensive; also, rendering can differ in various browsers (and in IE).