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Memcache::add() stores variable var with key only if such key doesn't exist at the server yet. Memcache::add() returns FALSE if such key already exist. For the rest Memcache::add() behaves similarly to Memcache::set().
Also you can use memcache_add() function. See example below.
Memcache::add() returns TRUE on success or FALSE on failure.
See also Memcache::set(), Memcache::replace().
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Generated: 2007-01-26 18:00:07