This function returns a pointer to a sanitised string.
<, & and >
into HTML entities so that the result can be displayed without any
danger of cross-site scripting in a browser.
The result may be passed to
This routine is meant to be called before any user provided strings
are returned to the browser.
returns a pointer to the sanitised string or NULL in case of error.
This CGi library is written by Martin Schulze
<email@example.com>. If you have additions or improvements
please get in touch with him.