当CodeIgniter遇到Nginx报404错误的解决办法

由于CodeIgniter当初是设计在apache的，而apache对pathinfo是支持比较好的，所以一切都很nice。但是当你把写好的代码放到nginx上，傻眼了，可能出了CodeIgniter的welcom之外，其他都是404错误。而我惊奇的发现，CodeIgniter的官方文档竟然对在Nginx上的配置只字不提。而你百度”CodeIgniter Nginx 404”又能搜到一堆一堆的文章，奇葩的是几乎每个文档的配置方法貌似还不大一样。如果你搞好了还罢，搞不好就是配几个晚上都搞不定，像我一样。

404错误的原因

原因是默认Nginx不支持pathinfo这种格式，当你浏览器里输入http:\xxx.xxx.com\index.php\pages\home的时候，Nginx会认为你要访问index.php目录下的pages文件夹里的home，所以会报404 not found错误。

解决方法

解决方法肯定是要修改服务器的重定向规则，大概有两种思路，一种是改nginx安装目录里的nginx.conf文件，如果你用了虚拟主机的话就去nginx安装目录下的vhosts下找对应的*.conf更改即可。
修改之前的nginx.conf文件：

server {
    
    
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
    
    
            root   D:/wnmp/www;
            index  index.html index.htm index.php;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
    
    
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
    
    
        #    proxy_pass   http://127.0.0.1;
        #}
        

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ \.php$ {
    
    
            root           D:/wnmp/www;
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
            include        fastcgi_params;
        }

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
    
    
        #    deny  all;
        #}
    }

只需要加入phpinfo支持即可：

fastcgi_split_path_info ^(.+\.php)(.*)$;
fastcgi_param   PATH_INFO $fastcgi_path_info;
fastcgi_param   SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_param   PATH_TRANSLATED $document_root$fastcgi_path_info;

修改后的nginx.conf文件：

server {
    
    
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
    
    
            root   D:/wnmp/www;
            index  index.html index.htm index.php;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
    
    
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
    
    
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ \.php$ {
    
    
            root           D:/wnmp/www;
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index  index.php;
            fastcgi_split_path_info ^(.+\.php)(.*)$;
            fastcgi_param   PATH_INFO $fastcgi_path_info;
            fastcgi_param   SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_param   PATH_TRANSLATED $document_root$fastcgi_path_info;
            include         fastcgi_params;
        }

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
    
    
        #    deny  all;
        #}
    }

或者修改如下配置即可：

location / {
    
    
            root   D:/wnmp/www;
            index  index.html index.htm index.php;
            try_files $uri $uri/ /index.php?$uri&$args;
        }

修改完nginx配置文件之后重启nginx即可：

nginx -t 检查配置文件有无错误
D:\wnmp\nginx>nginx -t
nginx: the configuration file D:\wnmp\nginx/conf/nginx.conf syntax is ok
nginx: configuration file D:\wnmp\nginx/conf/nginx.conf test is successful

nginx -s reload 重启nginx服务器