一,错误通常分3种
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021340334-472600377.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021340443-403253657.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021340646-455583383.jpg)
二,错误的分级
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021340740-937788043.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021340850-1418804005.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021341037-1844283268.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021341350-1068261779.jpg)
三,错误的触发
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021341521-671704502.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021341646-1627407531.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021341756-927285285.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021341881-1977910491.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021341990-960620011.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021342193-876207534.jpg)
四,显示错误报告
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021342303-359509635.jpg)
问题一:设置显示错误报告
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021342443-166185884.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021342568-293342943.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021342756-2045269687.jpg)
问题二:显示哪些级别的错误报告
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021342928-1920358264.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021343037-1632279940.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021343162-1166894382.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021343287-1830938080.jpg)
五,错误日志的记录问题
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021343381-695315665.jpg)
问题一:是否记录(log_errors)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021343490-1806852691.jpg)
问题二:记录到哪里(error_log)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021343646-1571140319.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021343740-1803194193.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021343928-1847185184.jpg)
六,自定义错误处理器
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021344053-1058299303.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021344162-1042498107.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021344287-952626622.jpg)
![](https://images2017.cnblogs.com/blog/1065651/201712/1065651-20171223021344475-2029146831.jpg)