Printing Image about datamax

[ianthrive]

I don't have a direct answer for your question. However, a couple thoughts:

Check out page 20 and 139 of the PDF manual in this repository.

The solution to which you link is for ZPL (Zebra Printing Language). As a general rule, ZPL is not compatible with older Datamax printers. I don't know if your snippet is Datamax-compatiable.

[abdkaviani]

Thanks

I edited above link according to the Datamax manual
This is my function and it works for me in most cases
I hope somebody to write perfect function :)

function imageToDPL($in, $name='') {
$res = "";
if(empty($in)) return '';
$im = imagecreatefrompng($in);
if ($im === false) return false;
// Black and white only
imagefilter($im, IMG_FILTER_GRAYSCALE); //first, convert to grayscale
imagefilter($im, IMG_FILTER_CONTRAST, -255); //then, apply a full contrast
// Convert to WBMP
ob_start();
imagewbmp($im);
$wbmp = ob_get_contents();
ob_end_clean();
$type = uintvar_shift($wbmp);
$fixed = uintvar_shift($wbmp);
$w = uintvar_shift($wbmp);
$h = uintvar_shift($wbmp);
$bitmap = str_split($wbmp); // Black is white, white is black
$total_bytes = count($bitmap);
$bytes_per_line = ceil($w/8);
if($w % 8 > 0) {
// End of line is padded with black; make that white
// Get last byte of each line
$period = ceil($w/8);
for($i=$bytes_per_line; $i <= $total_bytes; $i+=$bytes_per_line) {
$byte = ord($bitmap[$i-1]);
for($j=1; $j<=$w%8; $j++) {
// Flip j-th bit
$byte = $byte & ((1<<($j-1)));
}
$bitmap[$i-1] = chr($byte);
}
}
$bitmap = implode("", $bitmap);
$uncompressed = strtoupper(bin2hex($bitmap));
$prtLine = strtoupper(dechex($bytes_per_line));
//echo "width:".$w." height:".$h." total:".$total_bytes." per_line:".$bytes_per_line." length:".strlen($uncompressed)."
";
for($k=strlen($uncompressed);$k>=0;$k-=($bytes_per_line2))
$res .= "80".$prtLine.substr($uncompressed,$k,($bytes_per_line2))."\x0d";
//$r = $uncompressed;
return $res;
}
function uintvar_shift(&$data) {
$index = 0;
$r = 0;
while ((ord($data[$index]) & 0x80) != 0) {
if ($index >= 4) {
return false;
}
$r = ($r << 7) | (ord($data[$index]) & 0x7f);
$index++;
}
$r = ($r << 7) | (ord($data[$index]) & 0x7f);
$data = substr($data, $index + 1);
return $r;
}