On 18/09/12 18:09, Stas Malyshev wrote:
Hi!
No it's not. A filter removes, but escaping lets the original content
pass through unchanged, with the necessary in-band signalling to make
sure that its content is not treated as in-band signalling.
Again, you are confusing particular implementation of a particular
filter with the idea of filtering. Moreover, even existing filters do
not match your description:
FILTER_SANITIZE_ENCODED, FILTER_SANITIZE_MAGIC_QUOTES,
FILTER_SANITIZE_SPECIAL_CHARS, FILTER_SANITIZE_FULL_SPECIAL_CHARS,
FILTER_SANITIZE_STRING, FILTER_CALLBACK
But in general, look at implementation of filters anywhere - like Apache
filters or IIS filters - nowhere it is said that filter can only remove
data.
Ah, sorry, I think I'm confusing the standard English language meaning
of filter with regards to the physical device or signal processing, with
the meaning in the field of computer science etc.
--
Andrew Faulds
http://ajf.me/
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