404 error occurs in Nginx+CI

I just learned the CI framework recently and made a simple project. The environment of the local server was adjusted, but when deployed to the remote server:

http://example.com/(index.php)/ can be accessed (For the configured default controller-class)

http://example.com/(index.php)/[controller-class]/[controller-method] cannot be accessed (prompt 404Error!)

Finally Baidu reason:

For URLs like /index.php/abc, Apache and Lighttpd will interpret it as "index.php?abc", while nginx will think that the request is for a directory with the name "index.php" The contents of the abc file . Therefore, CI cannot run under nginx without rewrite configured, but it works normally under Apache and Lighttpd.

Solution (emphasis in bold, emphasis in red):

<span> 1</span><span>  server {
</span><span> 2</span>         listen 80<span>;
</span><span> 3</span>         server_name example.com<span>;
</span><span> 4</span>         root /data/wwwroot/example/<span> 5</span>         index index.php index.html index.<span>htm;
</span><span> 6</span><span> 7</span>         location ~* \.(css|js|swf|htm|jpg|png|gif|json|atlas)?<span>$ {
</span><span> 8</span><span>            expires 1d;
</span><span> 9</span>             add_header Pragma <span>public</span><span>;
</span><span>10</span>             add_header Cache-Control "public"<span>;
</span><span>11</span><span>        }
</span><span>12</span><span>13</span>         location /<span>controller-class</span>/<span> {
</span><span>14</span><span>if</span> (!-e <span>$request_filename</span><span>) {
</span><span>15</span>                 rewrite ^/<span>controller-class</span>/(.*)$  /<span>controller-class</span>/index.php?q=<span>$uri</span>&<span>$args</span><span>;
</span><span>16</span><span>            }
</span><span>17</span><span>        }
</span><span>18</span><span>19</span>         location ~ \.<span>php$ {
</span><span>20</span>             fastcgi_pass   127.0.0.1:9000<span>;
</span><span>21</span>             fastcgi_index  index.<span>php;
</span><span>22</span>             fastcgi_param  SCRIPT_FILENAME  <span>$document_root$fastcgi_script_name</span><span>;
</span><span>23</span>                         fastcgi_param  PHP_VALUE        open_basedir=<span>$document_root</span>:/tmp/:/proc/<span>;
</span><span>24</span><span>include</span><span>        fastcgi_params;
</span><span>25</span><span>        }
</span><span>26</span><span>27</span>     }

Reference: http://www.2cto.com/os/201301/185926.html [404 error occurred in Nginx+CI Question】

The above introduces the 404 error in Nginx+CI, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.