xixifeng IMK_Yu 刚刚我解决了，我用的是xampp-win32-5.5.30-6-VC11-installer，windows64位系统。解决方法：找到安装目录下xampp/php/php.ini，用记事本打开，搜索;extension=php_fileinfo.dll，将这行前面的英文分号";"去掉，保存，重启即可。
justjavac IMK_Yu lnmp，怎么卸载原来的呢然后重新编译安装PHP？ https://www.baidu.com/s?ie=utf-8&f=8&rsv_bp=1&rsv_idx=1&ch=&tn=65025099_cb&bar=&wd=lnmp%EF%BC%8C%E6%80%8E%E4%B9%88%E5%8D%B8%E8%BD%BD%E5%8E%9F%E6%9D%A5%E7%9A%84%E5%91%A2%E7%84%B6%E5%90%8E%E9%87%8D%E6%96%B0%E7%BC%96%E8%AF%91%E5%AE%89%E8%A3%85PHP&rn=&rsv_pq=c1010c56001074ab&rsv_t=4de83PAJslAvv2fzuRA%2FutYb%2FEsV7hY3QkE%2B3iWdCjGfyUxIU8QxMCKBxXt2PdvN4WI&rsv_enter=0&inputT=240&rsv_sug1=22