Does the file size limit apply to each individual file or to the total upload size?

The file size limit typically applies to each individual file being uploaded, not the total upload size. To enforce a file size limit for each individual file, you can use the `upload_max_filesize` directive in your PHP configuration. This directive specifies the maximum size of an uploaded file.

// Set the maximum file size limit for each individual file to 5MB
ini_set('upload_max_filesize', '5M');