diff --git a/printlib.php b/printlib.php
index f1a81e9..25394cc 100644
--- a/printlib.php
+++ b/printlib.php
@@ -90,4 +90,39 @@ function printean8($data) {
         return false;
     }
 }
+function rawdlen($data) {
+    $len = strlen($data);
+    $l = ($len + 3) % 256;
+    $h = intdiv($len, 256);
+    if ($l<16) {
+            $l=hex2bin("0" . dechex($l));
+        } else {
+            $l=hex2bin(dechex($l));
+        }
+    if ($h<16) {
+            $h=hex2bin("0" . dechex($h));
+        } else {
+            $h=hex2bin(dechex($h));
+        }
+    return $l . $h;
+}
+function printqr($data, $size = 8) {
+    if (strlen($data)<7088) {
+        if ($size<16) {
+            $encs=hex2bin("0" . dechex($size));
+        } else {
+            $encs=hex2bin(dechex($size));
+        }
+        $lp=fopen("/dev/usb/lp0", 'w');
+        fwrite($lp, GS . "(k\x04\x00\x31\x41\x32\x00");
+        fwrite($lp, GS . "(k\x03\x00\x31\x43" . $encs);
+        fwrite($lp, GS . "(k\x03\x00\x31\x45\x30");
+        fwrite($lp, GS . "(k" . rawdlen($data) . "\x31\x50\x30" . $data);
+        fwrite($lp, GS . "(k\x03\x00\x31\x51\x30");
+        #fwrite($lp, "\x0a");
+        fclose($lp);
+    } else {
+        return false;
+    }
+}
 ?>
\ No newline at end of file