[config]配环境也是orz

[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", "] => ", $varVal);
echo '<pre>'.$varVal.'</pre>';
exit();`
```

查看mysql日志

```shell
hostname //获得主机名 
:<hostname> 
find / -name <hostname>.err 
:<path>
less <path> //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