This is no longer a part of the World of Warcraft API. Instead use GetNumGroupMembers or GetNumSubgroupMembers It was removed in patch 5.0.4.

Returns the total number of people in your raid group.

members = GetNumRaidMembers();

Returns Edit

members 

Number - number of players in your raid group, including yourself; or 0 if you are not in a raid group.

Notes Edit

• While in battlegrounds, this function returns the number of people in the battleground raid group. You may both be in a battleground raid group and in a normal raid group at the same time; you can use GetRealNumRaidMembers() to retrieve the number of people in the latter.

See AlsoEdit

• GetNumGroupMembers
• GetNumSubgroupMembers

• GetNumPartyMembers (Removed 5.0.4)
• GetRealNumRaidMembers (Removed 5.0.4)