W3cubDocs

/Redis

STRLEN

STRLEN key

Available since 2.2.0.

Time complexity: O(1)

Returns the length of the string value stored at key. An error is returned when key holds a non-string value.

Return value

Integer reply: the length of the string at key, or 0 when key does not exist.

Examples

redis> SET mykey "Hello world" "OK" redis> STRLEN mykey (integer) 11 redis> STRLEN nonexisting (integer) 0

© 2009–2018 Salvatore Sanfilippo
Licensed under the Creative Commons Attribution-ShareAlike License 4.0.
https://redis.io/commands/strlen