How to get rid of XSS with a remote page in a frame?


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To simplify the example, the following code

On the page is a form:

Which betrays the file getpage.php in the frame:

The file itself getpage.php gives the body of the page:
<?$url = $_POST['url'];$page = file_get_html($url);echo $page;?>


If the remote page contains XSS code, then will it to my site and if so, how to get rid of it?
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1 Answer

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and if you just before conclusion in getpage.php cut all possible xss in $page?
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