What are common pitfalls when using printer functions in PHP to print confirmation messages?

Common pitfalls when using printer functions in PHP to print confirmation messages include not properly handling errors, not checking if the printer is available or connected, and not setting the correct printer settings. To solve these issues, you should always check for errors when sending print jobs, verify the printer status before printing, and ensure that the printer settings are correctly configured.

$printer = "Printer Name";
$message = "Confirmation Message";

$handle = printer_open($printer);

if($handle) {
    printer_set_option($handle, PRINTER_MODE, "RAW");
    printer_write($handle, $message);
    printer_close($handle);
    echo "Print job sent successfully.";
} else {
    echo "Error opening printer.";
}