How can beginners in PHP ensure they are using the correct file permissions for image files?

Beginners in PHP can ensure they are using the correct file permissions for image files by setting the permissions to allow read and write access for the owner of the file. This can be done using the chmod() function in PHP, specifying the file path and the desired permissions (e.g., 0644 for read and write access for the owner).

$filename = 'path/to/image.jpg';
chmod($filename, 0644);