php - What other get method characters can be used? aside from question mark? -

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the normal get: http://localhost/get.php?id=2&get=row

can done this?

http://localhost/get.php&id=2&get=row

or in other way.

when user make parameter site like

http://test.com/?url=http://localhost/sample/

or if contains "?id=234"

so new url http://test.com/?url=http://localhost/smaple?id=1234

it creates 2 question mark.

when user make parameter site, has urlencode such data, so, it's going be

http://test.com/?url=http%3a%2f%2flocalhost%2fsmaple%3fid%3d1234

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