What is the significance of the client_max_body_size parameter in the NginX.conf file when dealing with PHP upload scripts?

The client_max_body_size parameter in the NginX.conf file specifies the maximum allowed size of client request bodies. When dealing with PHP upload scripts, it is important to ensure that this parameter is set to a value that allows for the uploading of files of the desired size. Failure to set this parameter appropriately may result in users being unable to upload files larger than the specified limit.

// NginX.conf file
http {
    ...
    server {
        ...
        client_max_body_size 100M; // Set the maximum allowed size to 100MB
        ...
    }
    ...
}