HTML中のクエリパラメータについて

以下のページにあるように、html中に記述するときは、&ではなくて&

でも、リクエストを送信するときは、ちゃんと&で送信するように！

http://www.ietf.org/rfc/rfc1866.txt


8.2.1. The form-urlencoded Media Type

The default encoding for all forms is `application/x-www-form-
urlencoded'. A form data set is represented in this media type as
follows:

1. The form field names and values are escaped: space
characters are replaced by `+', and then reserved characters
are escaped as per [URL]; that is, non-alphanumeric
characters are replaced by `%HH', a percent sign and two
hexadecimal digits representing the ASCII code of the
character. Line breaks, as in multi-line text field values,
are represented as CR LF pairs, i.e. `%0D%0A'.

2. The fields are listed in the order they appear in the
document with the name separated from the value by `=' and
the pairs separated from each other by `&'. Fields with null
values may be omitted. In particular, unselected radio
buttons and checkboxes should not appear in the encoded
data, but hidden fields with VALUE attributes present
should.


NOTE - The URI from a query form submission can be
used in a normal anchor style hyperlink.
Unfortunately, the use of the `&' character to
separate form fields interacts with its use in SGML
attribute values as an entity reference delimiter.
For example, the URI `http://host/?x=1&y=2' must be
written `<a href="http://host/?x=1&#38;y=2"' or `<a
href="http://host/?x=1&amp;y=2">'.

HTTP server implementors, and in particular, CGI
implementors are encouraged to support the use of
`;' in place of `&' to save users the trouble of
escaping `&' characters this way.