Run windows-usb.php from web server no error, but the receipt is not printed.

[iamaqilhaziq]

Hello. I need help. I need print the receipt from web-based POS. no error but receipt not come out

`<?php require DIR . '/vendor/autoload.php'; use Mike42\Escpos\Printer; use Mike42\Escpos\EscposImage; use Mike42\Escpos\PrintConnectors\FilePrintConnector;

/* Open the printer; this will change depending on how it is connected */ $connector = new FilePrintConnector("POS-80"); $printer = new Printer($connector);

/* Information for the receipt / $items = array( new item("Example item #1", "4.00"), new item("Another thing", "3.50"), new item("Something else", "1.00"), new item("A final item", "4.45"), ); $subtotal = new item('Subtotal', '12.95'); $tax = new item('A local tax', '1.30'); $total = new item('Total', '14.25', true); / Date is kept the same for testing */ // $date = date('l jS \of F Y h:i:s A'); $date = "Monday 6th of April 2015 02:56:25 PM";

/* Start the printer */ $logo = EscposImage::load(DIR . "/logo.png", false); $printer = new Printer($connector);

/* Print top logo */ $printer -> setJustification(Printer::JUSTIFY_CENTER); $printer -> graphics($logo);

/* Name of shop */ $printer -> selectPrintMode(Printer::MODE_DOUBLE_WIDTH); $printer -> text("ExampleMart Ltd.\n"); $printer -> selectPrintMode(); $printer -> text("Shop No. 42.\n"); $printer -> feed();

/* Title of receipt */ $printer -> setEmphasis(true); $printer -> text("SALES INVOICE\n"); $printer -> setEmphasis(false);

/* Items */ $printer -> setJustification(Printer::JUSTIFY_LEFT); $printer -> setEmphasis(true); $printer -> text(new item('', '$')); $printer -> setEmphasis(false); foreach ($items as $item) { $printer -> text($item); } $printer -> setEmphasis(true); $printer -> text($subtotal); $printer -> setEmphasis(false); $printer -> feed();

/* Tax and total */ $printer -> text($tax); $printer -> selectPrintMode(Printer::MODE_DOUBLE_WIDTH); $printer -> text($total); $printer -> selectPrintMode();

/* Footer */ $printer -> feed(2); $printer -> setJustification(Printer::JUSTIFY_CENTER); $printer -> text("Thank you for shopping at ExampleMart\n"); $printer -> text("For trading hours, please visit example.com\n"); $printer -> feed(2); $printer -> text($date . "\n");

/* Cut the receipt and open the cash drawer */ $printer -> cut(); $printer -> pulse(); $printer -> close();

/* A wrapper to do organise item names & prices into columns */ class item { private $name; private $price; private $dollarSign;

public function __construct($name = '', $price = '', $dollarSign = false)
{
    $this -> name = $name;
    $this -> price = $price;
    $this -> dollarSign = $dollarSign;
}

public function __toString()
{
    $rightCols = 10;
    $leftCols = 38;
    if ($this -> dollarSign) {
        $leftCols = $leftCols / 2 - $rightCols / 2;
    }
    $left = str_pad($this -> name, $leftCols) ;

    $sign = ($this -> dollarSign ? '$ ' : '');
    $right = str_pad($sign . $this -> price, $rightCols, ' ', STR_PAD_LEFT);
    return "$left$right\n";
}

} ?>`