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Nginx PHP5 upload_max_filesize
What is upload_max_filesize
The upload_max_filesize setting is an essential directive for configuring the size of the files that can be uploaded on your server. This instructs the PHP script’s filesystem as to how many bytes it may accept in a single file. The maximum size is calculated in bytes and is usually measured in MegaBytes (MB).
This directive is especially important when working with large files that require to be uploaded via FTP or HTTP to the web server or when sending larger files through email. It is important to understand that the upload_max_filesize directive in PHP is only useful when the HTTP server can accept and process the data.
How to Set upload_max_filesize in Nginx
Setting the upload_max_filesize in Nginx is quite simple, given that the nginx.conf file is already set up. All you have to do is to add the following line into the http section:
client_max_body_size 5M;
This setting is used to limit the size of files that can be uploaded to the server. In this example, it is set to a maximum of 5 Megabytes (5M). This setting ensures that the file is not uploaded to the server if it exceeds 5 MB.
The next step is to configure the Nginx server to accept larger files than the client_max_body_size is set to. This can be done by setting the following values in the http section of the nginx.conf file:
client_body_buffer_size 10M;
client_max_body_size 10M;
These settings allow the client to upload files up to 10MB. For larger files, you may need to increase the “client_max_body_size” and “client_body_buffer_size” to allow your server to accept and process larger files.
How to Change the upload_max_filesize in Nginx
If you want to change the upload_max_filesize in Nginx, simply edit the .conf file located in the Nginx directory and restart the server. You can use a text editor or an FTP client to edit the file. If you are using the command line, you can use vim or nano.
Make sure to save the file after making any changes. Then restart your Nginx server with the following command:
sudo /etc/init.d/nginx restart
Your changes should now be in effect. It’s always recommended to test your new settings to make sure everything is working correctly.
Common Problems with upload_max_filesize in Nginx
When setting the upload_max_filesize in Nginx, there are a few common problems that can occur. The most common problem is when the client_max_body_size and client_body_buffer_size are set to different values. This can cause problems when the server is trying to accept files that exceed the client_max_body_size or the client_body_buffer_size.
The other common issue is when the Nginx server is not supporting the correct HTTP methods. For example, if you are trying to upload a file via PUT or POST, the Nginx server might not be set up to handle those requests. To fix this, you can add a location block for those methods, as shown below:
location ~* .(put|post) {
client_max_body_size 10M;
client_body_buffer_size 10M;
}
Conclusion
Setting the upload_max_filesize in Nginx is quite simple and can help ensure that large files are uploaded correctly. However, you should make sure to test the settings before going live, and to periodically check the server logs to ensure that no unexpected problems have occurred.
FAQs
Q1: What is upload_max_filesize?
A1: The upload_max_filesize setting is an essential directive for configuring the size of the files that can be uploaded on your server. This instructs the PHP script’s filesystem as to how many bytes it may accept in a single file.
Q2: How do I set upload_max_filesize in Nginx?
A2: Setting the upload_max_filesize in Nginx is quite simple, given that the nginx.conf file is already set up. All you have to do is to add the following line into the http section: client_max_body_size 5M;
Q3: How do I change the upload_max_filesize in Nginx?
A3: If you want to change the upload_max_filesize in Nginx, simply edit the .conf file located in the Nginx directory and restart the server. You can use a text editor or an FTP client to edit the file. If you are using the command line, you can use vim or nano.
Q4: What are the common problems with upload_max_filesize in Nginx?
A4: When setting the upload_max_filesize in Nginx, there are a few common problems that can occur. The most common problem is when the client_max_body_size and client_body_buffer_size are set to different values. This can cause problems when the server is trying to accept files that exceed the client_max_body_size or the client_body_buffer_size. The other common issue is when the Nginx server is not supporting the correct HTTP methods.
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