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Added in 2.4.0 / 1.13.2
Popularity #24 (1744)

Returns the GUID of the unit.

guid = UnitGUID(unit)

Arguments

unit
string : UnitId - For example "player" or "target"

Returns

guid
string? : GUID - A string containing (hexadecimal) values, delimited with hyphens. Returns nil if the unit does not exist.

Example

Prints the target's GUID, in this case a creature.

/dump UnitName("target"), UnitGUID("target")
> "Hogger", "Creature-0-1465-0-2105-448-000043F59F"

Prints the npc/player ID of a unit, if applicable.

local unitLink = "|cffffff00|Hunit:%s|h[%s]|h|r"

local function ParseGUID(unit)
	local guid = UnitGUID(unit)
	local name = UnitName(unit)
	if guid then
		local link = unitLink:format(guid, name) -- clickable link
		local unit_type = strsplit("-", guid)
		if unit_type == "Creature" or unit_type == "Vehicle" then
			local _, _, server_id, instance_id, zone_uid, npc_id, spawn_uid = strsplit("-", guid)
			print(format("%s is a creature with NPC ID %d", link, npc_id))
		elseif unit_type == "Player" then
			local _, server_id, player_id = strsplit("-", guid)
			print(format("%s is a player with ID %s", link, player_id))
		end
	end
end

See also

Patch changes

Bc icon.gif Patch 2.4.0 (2008-03-25): Added.

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