nginx log analyzer online

Code is PHP, running on Nginx, part is the function of sending mail In order to facilitate debugging, want to output a variable to see, But do not know where to output, how to output? Node can directly console.log (), but how does the PHP output on Nginx? Online said to change the log format, also useful echo? Not very

If a 502 Bad GateWay error occurs in nginx, the program may fail or the response may be slow. However, sometimes Nginx itself has problems. For example, after nginx is restarted, all accesses are 502 errors. The error log contains a large number of no live upstream logs.We used to misuse the check upstream module. Let&

Professional statistics website, such as Baidu Statistics, Google ANALYTICS,CNZZ and other statistical background to provide the webmaster commonly used statistical indicators, such as UV,PV, online time, IP, etc., in addition, because of network reasons, I found that Google Analytics will be more than Baidu statistics more than hundreds of of the IP, so want to write their own feet to understand the actual number of visits, but the access