public static function run($dataDir = null) { # Instantiate barcode object $symbology = new Symbology(); $bb = new BarCodeBuilder("12345678", $symbology->Code128); # Measurement is Milimeter $graphicsUnit = new GraphicsUnit(); $bb->setGraphicsUnit($graphicsUnit->Point); # Set the bar height to 3 points $bb->setBarHeight(3.0); $bb->save($dataDir . "SetBarcodeImageUnitSize.jpg"); # Display Status. print "Set Barcode Image Unit Size, please check the output file." . PHP_EOL; }