public static function run($dataDir = null)
{
# Instantiate barcode object
$bb = new BarCodeBuilder();
# Set the Code text for the barcode
$bb->setCodeText("1234567");
# Set the symbology type to Code39
$symbology = new Symbology();
$bb->setSymbologyType($symbology->Code39Standard);
# Make the checksum to be visible on the barcode
$enableChecksum = new EnableChecksum();
$bb->setEnableChecksum($enableChecksum->Default);
# Save the image to disk in JPG format
$bb->save($dataDir . "barcode.jpg");
# Print message
print "Barcode image generated successfully." . PHP_EOL;
}
