Random approximation of a general symmetric equation

In this paper‎, ‎we prove the Hyers-Ulam stability of the symmetric functional‎ ‎equation $f(\ph_1(x,y))=\ph_2(f(x)‎, ‎f(y))$ in random normed spaces‎. ‎As a consequence‎, ‎we‎ ‎obtain some random stability results in the sense of Hyers-Ulam-Rassias‎.