What role does the wwwrun-User play in determining file permissions for uploaded files in PHP?

The wwwrun user is typically the user that the web server runs as, and it is important to ensure that this user has appropriate permissions to access and modify uploaded files in PHP. To ensure that uploaded files have the correct permissions, you can use the `chmod()` function in PHP to set the permissions on the uploaded files after they have been saved.

// Assuming $uploadedFile is the path to the uploaded file
$uploadedFile = '/path/to/uploaded/file.jpg';

// Set the permissions for the uploaded file to be readable and writable by the wwwrun user
chmod($uploadedFile, 0644);