How to configure in Nginx to disable case sensitivity of PHP variable names

Nginx (pronounced "engine X") is an open source, high-performance reverse proxy server that supports many load balancing algorithms. It was created by Igor Sysoev of Russia, and the first public version was released in 2004. Since then, it has become the choice of many websites and companies, including Facebook, Google, LinkedIn, Dropbox and many more.

When using Nginx to forward requests for a PHP website, this may cause some problems because variable names in PHP are case-sensitive. Especially in Nginx configuration, if the URL contains uppercase letters when accessing it, a "404 Not Found" error may occur. This is because the Linux core is case-sensitive by default, and Nginx is conditionally case-sensitive.

To solve this problem, we need to disable Nginx from handling PHP variable names case-sensitively. Below, I will show you how to configure in Nginx to disable case sensitivity of PHP variable names.

1. Edit Nginx configuration file

Edit your Nginx configuration file. This file may be /etc/nginx/nginx.conf or /etc/nginx/sites-available /YOUR_SITE_NAME etc. It's a good idea to back up the file before making any modifications.

2. Add the following code

Add the following code in the http block of nginx.conf:

http {
        . . .
        #忽略PHP变量名称的大小写
        fastcgi_param PHP_VALUE "cgi.fix_pathinfo=off";
        . . .
}

3. Restart Nginx

After modifying the configuration file, Nginx needs to be restarted for the changes to take effect. You can use the following command:

systemctl restart nginx

4. Test

Now you can access the page corresponding to the URL address containing uppercase letters, since you have disabled Nginx's use of PHP variable names case sensitivity, you can now access these pages normally.

Summary

Nginx distinguishes the case of PHP variable names by default, which may cause some problems. To solve this problem, you can disable case sensitivity of PHP variable names by adding a parameter in the Nginx configuration file. Edit the Nginx configuration file, add the code, restart Nginx, and test your PHP website.

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