使用memcache.php监控memcache后，在页面报时间格式的错误：
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Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in/usr/local/nginx/html/memcache.phpon line 736
根据提示可以列出memecache.php相关的行数内容；
24 define('DATE_FORMAT','Y/m/d H:i:s');