在项目中，linux环境下，修改php.ini 配置文件后，需要重启Apache是配置生效，但是用户为普通用户，执行service httpd restart后，报错如下：
[fst@newgame1 httpd]$ service httpd restart
Stopping httpd: [ OK ]
rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied
Starting httpd: (98)Address already in use: make_sock: could not bind to address [::]:8484
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:8484
no listening sockets available, shutting down
Unable to open logs
[FAILED]
出现改问题的原因是，普通用户没有权限进行以上操作。
解决方法是使用sudo指令提升普通用户的权限即可：
[fst@newgame1 httpd]$ sudo service httpd restart
Stopping httpd: [ OK ]
Starting httpd: [ OK ]
这样Apache重启就成功了！
