1.修改php-fpm.conf中配置 没有则增加
catch_workers_output = yes
error_log = log/error_log


2.修改php.ini中配置，没有则增加
log_errors = On
error_log = "/usr/local/lnmp/php/var/log/error_log"
error_reporting=E_ALL&~E_NOTICE


3.重启php-fpm