http://sourceforge.net/projects/mhash/ As of PHP 5.3.0, the mhash extension is emulated thru the Hash extension. This makes the mhash installation directory have no effect, and requires the hash extension enabled to make the mhash support available. 编译后 重新with编译php
编译后 重新with编译php
如果你是用yum安装的 看看有没有这个包吧