diff options
Diffstat (limited to 'user_guide/libraries/input.html')
| -rw-r--r-- | user_guide/libraries/input.html | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/user_guide/libraries/input.html b/user_guide/libraries/input.html index 17ed7f0ff..c95ebbd98 100644 --- a/user_guide/libraries/input.html +++ b/user_guide/libraries/input.html @@ -109,7 +109,12 @@ Note: This function should only be used to deal with data upon submission. It's <p>Note: If you use the form validation class, it gives you the option of XSS filtering as well.</p>
+<p>An optional second parameter, <dfn>is_image</dfn>, allows this function to be used to test images for potential XSS attacks, useful for file upload security. When this second parameter is set to <dfn>TRUE</dfn>, instead of returning an altered string, the function returns TRUE if the image is safe, and FALSE if it contained potentially malicious information that a browser may attempt to execute.</p>
+<code>if ($this->input->xss_clean($file, TRUE) === FALSE)<br />
+{<br />
+ // file failed the XSS test<br />
+}</code>
<h2>Using POST, COOKIE, or SERVER Data</h2>
|