Nginx Access_log display Access 200, but the page is blank

Domain name: zengzhang.in, below a wordpress program
The Nginx configuration is as follows:

server {    listen       80;    server_name  zengzheng.in;    error_log /var/log/nginx/binge-error.log;    access_log /var/log/nginx/binge-access.log;    root   /var/www/zengzhang.in/;    index index.php index.html index.htm;    location / {        try_files $uri $uri/ =404;    }    error_page 404 /404.html;    error_page 500 502 503 504 /50x.html;    location = /50x.html {        root /usr/share/nginx/www;    }    location ~ \.php$ {        try_files $uri =404;        fastcgi_pass unix:/var/run/php5-fpm.sock;        fastcgi_index index.php;        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;        include fastcgi_params;    }}

Some of the access logs are as follows:

115.231.100.106 - - [12/Jun/2015:08:21:01 -0400] "GET / HTTP/1.1" 200 31 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36"115.231.100.106 - - [12/Jun/2015:08:21:02 -0400] "GET /favicon.ico HTTP/1.1" 200 31 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36"101.226.73.30 - - [12/Jun/2015:08:21:31 -0400] "GET / HTTP/1.1" 200 31 "-" "DNSPod-Monitor/2.0"115.231.100.106 - - [12/Jun/2015:08:22:27 -0400] "GET / HTTP/1.1" 200 31 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36"115.231.100.106 - - [12/Jun/2015:08:22:28 -0400] "GET /favicon.ico HTTP/1.1" 200 31 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36"

Reply content:

Domain name: zengzhang.in, below a wordpress program
The Nginx configuration is as follows:

server {    listen       80;    server_name  zengzheng.in;    error_log /var/log/nginx/binge-error.log;    access_log /var/log/nginx/binge-access.log;    root   /var/www/zengzhang.in/;    index index.php index.html index.htm;    location / {        try_files $uri $uri/ =404;    }    error_page 404 /404.html;    error_page 500 502 503 504 /50x.html;    location = /50x.html {        root /usr/share/nginx/www;    }    location ~ \.php$ {        try_files $uri =404;        fastcgi_pass unix:/var/run/php5-fpm.sock;        fastcgi_index index.php;        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;        include fastcgi_params;    }}

Some of the access logs are as follows:

  115.231.100.106--[12/jun/2015:08:21:01-0400] "get/http/1.1" 200 31 "-" " mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) applewebkit/537.36 (khtml, like Gecko) chrome/41.0.2272.118 safari/537.36 "115.231.100.106--[12/ JUN/2015:08:21:02-0400] "Get/favicon.ico http/1.1"-"mozilla/5.0" (Macintosh; Intel Mac OS X 10_10_3) applewebkit/537.36 (khtml, like Gecko) chrome/41.0.2272.118 safari/537.36 "101.226.73.30--[12/ju N/2015:08:21:31-0400] "get/http/1.1"-"dnspod-monitor/2.0" 115.231.100.106--[12/jun/2015:08:22:27-0400] "G "et/http/1.1"-"mozilla/5.0" (Macintosh; Intel Mac OS X 10_10_3) applewebkit/537.36 (khtml, like Gecko) chrome/41.0.2272.118 safari/537.36 "115.231.100.106--[12/ JUN/2015:08:22:28-0400] "Get/favicon.ico http/1.1"-"mozilla/5.0" (Macintosh; Intel Mac OS X 10_10_3) applewebkit/537.36 (khtml, like Gecko) chrome/41.0.2272.118 safari/537.36 " 

1, please first check your index.php there is no problem, maybe you shut down all error output, this is the PHP parsing problem caused by blank page.

2, your try_files seems not quite the same as mine, mine is like this, has been working normally for several years

try_files $uri $uri/ /index.php?q=$uri&$args;

Just met the same problem that has been resolved.
I noticed that there are two of your configuration files root , one in the second block, and the location $document_root$fastcgi_script_name value here $document_root may not be what you expected /var/www/zengzhang.in/ , so try it. is to replace the second one location . $document_root$fastcgi_script_name/var/www/zengzhang.in/$fastcgi_script_name

