E325: ATTENTION
Found a swap file by the name "/usr/local/php/etc/.php.ini.swp"
          owned by: root   dated: Thu Dec  6 14:26:44 2018
         file name: /usr/local/php/etc/php.ini
          modified: YES
         user name: root   host name: iZwz9il5d9pfak99wgsocxZ
        process ID: 31436 (still running)
While opening file "/usr/local/php/etc/php.ini"
             dated: Thu Dec  6 14:44:48 2018
      NEWER than swap file!

(1) Another program may be editing the same file.
    If this is the case, be careful not to end up with two
    different instances of the same file when making changes.
    Quit, or continue with caution.

(2) An edit session for this file crashed.
    If this is the case, use ":recover" or "vim -r /usr/local/php/etc/php.ini
"
    to recover the changes (see ":help recovery").
    If you did this already, delete the swap file "/usr/local/php/etc/.php.in
-- More --

解决方法：

我们按回车进入vi编辑器输入:q!退出vi编辑器，在终端输入rm -f /usr/local/php/etc/.php.ini.swp回车，再一次进入vi编辑器发现以前的提示消失。

参考来源：https://www.linuxidc.com/Linux/2014-11/109165.htm