On uniformly continuous surjections between function spaces

We consider uniformly continuous surjections between $C_p(X)$ and $C_p(Y)$ (resp, $C_p^{\ast }(X)$ and $C_p^{\ast }(Y$)) and show that if $X$ has some dimensional-like properties, then so does $Y$. In particular, we prove that if $T:C_p(X)\to C_p(Y)$ is a continuous linear surjection, then $\dim Y=0$ if $\dim X=0$. This provides a positive answer to a question raised by Kawamura-Leiderman \cite[Problem 3.1]{kl}.