Is it possible to send files directly to a printer using PHP?

Yes, it is possible to send files directly to a printer using PHP by utilizing the `lpr` command in the shell. You can use the `exec()` function in PHP to execute shell commands and send the file to the printer.

$file_path = 'path/to/your/file.pdf';
$printer_name = 'printer_name';

exec("lpr -P $printer_name $file_path");