You can't execute code by entering it into a page-plugin page (or any other input field on your site). First, the entered stuff is not interpreted as code but as data that gets simply safed in the database to get displayed whenever the same page (or comment, blog, etc.) is shown on your site. It wouldn't be a good idea to allow for execution of code this way anyway. How would you stop anyone from entering code that simply nukes your server, or infects your site members with trojans / malware etc.?
If you want some code to get executed when viewing a specific page you need to create an Elgg plugin that exececutes this code.
You cant execute php by entering the code through the comments form. http://wiki.answers.com/Q/What_are_client_side_and_server_side_scripting
The question is, i like to integrate or add the web page inside elgg. It's possible....?
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