(PECL wincache >= 1.1.0)
Adds a variable in user cache only if variable does not already exist in the cache
bool wincache_ucache_add ( string $key, mixed $value [, int $ttl = 0 ] )
bool wincache_ucache_add ( array $values [, mixed $unused = NULL [, int $ttl = 0 ]] )
Adds a variable in user cache, only if this variable doesn't already exist in the cache. The added variable remains in the user cache unless its time to l