-:c:func:`memcached_exist()` sets error to
-to :c:type:`MEMCACHED_SUCCESS` upon finding that the key exists.
-:c:type:`MEMCACHED_NOTFOUND` will be return if the key is not found.
-
-
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-HOME
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-
-To find out more information please check:
-`http://libmemcached.org/ <http://libmemcached.org/>`_