This function used to claim that it encodes the specified string
according to the HTTP cookie standard. If fact it does not - it
applies URI-style (i.e. %XX
) encoding on some of the
characters that cannot occur literally in cookie values. There
exist some web servers (read Roxen and forks) that usually perform
a corresponding nonstandard decoding of %-style escapes in cookie
values in received requests.
This function is deprecated. The function quoted_string_encode
performs encoding according to the standard, but it is not safe to
use with arbitrary chars. Thus URI-style encoding using
uri_encode or percent_encode is normally a good choice, if
you can use uri_decode /percent_decode at the decoding end.