i want to print with unicode but it show charater ????

[sunry2ntkh]

text("Hellow world​ ខ្មែរ = កម្ូចា\n"); $printer -> cut(); /* Close printer */ $printer -> close(); } catch (Exception $e) { echo "Couldn't print to this printer: " . $e -> getMessage() . "\n"; } ?>

[mike42]

The ??? indicates that we don't know how to print those characters. ESC/POS existed before unicode, but we do a good job mapping from UTF-8 to ESC/POS to print non-ASCII characters that are supported on the printer.

Could you perhaps share which model of printer you're using, a link to the vendor documentation showing the code pages available, and some sample text such as a pangram in the script you are trying to print?

This should give us an idea of whether its possible to add support or if you will need to work around it using system fonts.

[sunry2ntkh]

can you help me how to mapping UTF-8

[mike42]

Please go to receipt-print-hq/escpos-printer-db#28, and post some information about how to encode this script on your printer (such as a link to the vendor's programming guide, or a test print showing the supported code pages and their numbers).

Closing this off as redundant.