[coding tricks](https://my.oschina.net/sikou/blog/781261) 开xdebug: 修改php.ini [PHP调试工具Xdebug安装配置教程](http://www.cnblogs.com/qiantuwuliang/archive/2011/01/23/1942382.html) ``` [xdebug] //是否允许Xdebug跟踪函数调用,跟踪信息以文件形式存储,默认值为0 xdebug.auto_trace=1 //打开xdebug的性能分析器,以文件形式存储,这项配置是不能以ini_set()函数配置的,默认值为0 xdebug.profiler_enable=on ``` 据说xdebug对性能影响大,composer也会报错,所以可以自己格式化...: ``` // ob_start(); var_dump($varVal); $varVal = ob_get_clean(); $varVal = preg_replace("/\]\=\>\n(\s+)/m", "] => ", $varVal); echo ''.$varVal.''; exit();` ``` 查看mysql日志 ```shell hostname //获得主机名 : find / -name .err : less //q退出 ``` 得到了如下log 2016-11-02T16:58:40.132879Z 0 [ERROR] Failed to initialize plugins. 2016-11-02T16:58:40.132908Z 0 [ERROR] Aborting 2016-11-02T16:58:40.132924Z 0 [Note] Binlog end 2016-11-02T16:58:40.133305Z 0 [Note] Shutting down plugin 'CSV' 2016-11-02T16:58:40.133894Z 0 [Note] /usr/local/Cellar/mysql/5.7.16/bin/mysqld: Shutdown complete 2016-11-02T16:58:40.6NZ mysqld_safe mysqld from pid file /usr/local/var/mysql/192.168.1.102.pid ended