SYNOPSIS
	int member(mixed *array, mixed elem)
	int member(mapping m, mixed key)
	int member(string s, int elem)

DESCRIPTION
	For arrays and strings, returns the index of the second arg in
	the first arg, or -1 if none found. For mappings it checks, if
	key is present in mapping m and returns 1 if so, 0 if key is
	not in m.

SEE ALSO
	member_array(E), mappings(LPC)