function barcode($image, $step = 1, $length = false)
{
if (function_exists('imagefilter') && function_exists('imagetruecolortopalette') && function_exists('imagecolorset') && function_exists('imagecolorclosest')) {
//Gaussian blur to fill in holes from dithering
imagefilter($image, IMG_FILTER_GAUSSIAN_BLUR);
//force two colors; dithering = FALSE
imagetruecolortopalette($image, FALSE, 2);
//find the closest color to black and replace it with actual black
imagecolorset($image, imagecolorclosest($image, 0, 0, 0), 0, 0, 0);
//find the closest color to white and replace it with actual white
imagecolorset($image, imagecolorclosest($image, 255, 255, 255), 255, 255, 255);
}
//search
$height = imagesy($image);
for ($i = $step; $i < $height - $step; $i += $step) {
$a = barWidth($image, $i);
$w = nwWidth($a);
if ($w['n'] != 0 && $w['w'] != 0) {
$s = widthsToNW($a, $w['n'], $w['w']);
if (validate($s)) {
$code = NWtoCode($s);
if ($code != "false" && (!$length || strlen($code) == $length)) {
return $code;
}
} else {
if (validateCodaBar($s)) {
$code = NWtoCodeCodaBar($s . "N");
//remember to add the last space
if ($code != "false") {
$code = substr($code, 1, -1);
//remove the start and stop characters
if (!$length || strlen($code) == $length) {
return $code;
}
}
}
}
}
}
return false;
}
function barcode($image, $step = 1, $length = false, $numsonly = false)
{
if (function_exists('imagefilter') && function_exists('imagetruecolortopalette') && function_exists('imagecolorset') && function_exists('imagecolorclosest')) {
//Gaussian blur to fill in holes from dithering
imagefilter($image, IMG_FILTER_GAUSSIAN_BLUR);
//force two colors; dithering = FALSE
imagetruecolortopalette($image, FALSE, 2);
//find the closest color to black and replace it with actual black
imagecolorset($image, imagecolorclosest($image, 0, 0, 0), 0, 0, 0);
//find the closest color to white and replace it with actual white
imagecolorset($image, imagecolorclosest($image, 255, 255, 255), 255, 255, 255);
}
//search
$height = imagesy($image);
for ($i = $step; $i < $height - $step; $i += $step) {
$a = barWidth($image, $i);
$w = nwWidth($a);
if ($w['n'] != 0 && $w['w'] != 0) {
$s = widthsToNW($a, $w['n'], $w['w']);
if (validate($s)) {
$code = NWtoCode($s);
if ($code != "false" && (!$length || strlen($code) == $length)) {
return $code;
}
} else {
if (validateCodaBar($s)) {
$code = NWtoCodeCodaBar($s . "N");
//remember to add the last space
if ($code != "false") {
$code = substr($code, 1, -1);
//remove the start and stop characters
if (!$length || strlen($code) == $length) {
return $code;
}
}
}
}
}
}
if (OCR_ENABLED) {
//use tesseract to find the "barcode" or any text as OCR
$tmp = tempnam(TEMPORARY_DIRECTORY, "BARCODE");
imagepng($image, $tmp);
exec(TESSERACT_BIN . " {$tmp} {$tmp} -psm 3");
//run tessearct in single line mode
$result = file_get_contents($tmp . ".txt");
unlink($tmp);
unlink($tmp . ".txt");
if (!empty($result)) {
//check length if set to check
//
//
if ($length && !$numsonly) {
$res = preg_match("/([0-9]{" . $length . "})/", $result, $matches);
if ($res) {
return $matches[0];
}
}
$nums = preg_replace('/\\D+/', '', $result);
// numbers only
if ($length && strlen($nums) == $length) {
return $nums;
} else {
if (!$length && !$numsonly) {
return $result;
} else {
if (!$length && $numsonly) {
return $nums;
}
}
}
//if no length is set just return what is read by OCR
}
}
return false;
}