解决办法:重新启动 php-fpm : systemctl restart php-fpm
centos 7 命令 :
systemctl start php-fpm
systemctl stop php-fpm
systemctl restart php-fpm
systemctl reload php-fpm
centos 6 命令 :
service php-fpm start
service php-fpm stop
service php-fpm restart
service php-fpm reload