1 ===========================
2 Determine if a keys exists.
3 ===========================
5 .. index:: object: memcached_st
12 #include <libmemcached/memcached.h>
14 .. c:function:: memcached_return_t memcached_exist(memcached_st *ptr, char *key, size_t *key_length)
16 .. c:function:: memcached_return_t memcached_exist_by_key(memcached_st *ptr, char *group_key, size_t *group_key_length, char *key, size_t *key_length)
18 Compile and link with -lmemcached
20 .. versionadded:: 0.53
27 :c:func:`memcached_exist()` can be used to check if a key exists.
34 :c:type:`MEMCACHED_SUCCESS`
37 :c:type:`MEMCACHED_NOTFOUND`
38 The key was not found.
46 :manpage:`memcached(1)` :manpage:`libmemcached(3)` :manpage:`memcached_strerror(3)`