Mike42\Escpos\Printer::barcode PHP Метод

    public function barcode($content, $type = Printer::BARCODE_CODE39)
    {
        /* Validate input */
        self::validateInteger($type, 65, 73, __FUNCTION__, "Barcode type");
        $len = strlen($content);
        switch ($type) {
            case self::BARCODE_UPCA:
                self::validateInteger($len, 11, 12, __FUNCTION__, "UPCA barcode content length");
                self::validateStringRegex($content, __FUNCTION__, "/^[0-9]{11,12}\$/", "UPCA barcode content");
                break;
            case self::BARCODE_UPCE:
                self::validateIntegerMulti($len, array(array(6, 8), array(11, 12)), __FUNCTION__, "UPCE barcode content length");
                self::validateStringRegex($content, __FUNCTION__, "/^([0-9]{6,8}|[0-9]{11,12})\$/", "UPCE barcode content");
                break;
            case self::BARCODE_JAN13:
                self::validateInteger($len, 12, 13, __FUNCTION__, "JAN13 barcode content length");
                self::validateStringRegex($content, __FUNCTION__, "/^[0-9]{12,13}\$/", "JAN13 barcode content");
                break;
            case self::BARCODE_JAN8:
                self::validateInteger($len, 7, 8, __FUNCTION__, "JAN8 barcode content length");
                self::validateStringRegex($content, __FUNCTION__, "/^[0-9]{7,8}\$/", "JAN8 barcode content");
                break;
            case self::BARCODE_CODE39:
                self::validateInteger($len, 1, 255, __FUNCTION__, "CODE39 barcode content length");
                // 255 is a limitation of the "function b" command, not the barcode format.
                self::validateStringRegex($content, __FUNCTION__, "/^([0-9A-Z \$\\%\\+\\-\\.\\/]+|\\*[0-9A-Z \$\\%\\+\\-\\.\\/]+\\*)\$/", "CODE39 barcode content");
                break;
            case self::BARCODE_ITF:
                self::validateInteger($len, 2, 255, __FUNCTION__, "ITF barcode content length");
                // 255 is a limitation of the "function b" command, not the barcode format.
                self::validateStringRegex($content, __FUNCTION__, "/^([0-9]{2})+\$/", "ITF barcode content");
                break;
            case self::BARCODE_CODABAR:
                self::validateInteger($len, 1, 255, __FUNCTION__, "Codabar barcode content length");
                // 255 is a limitation of the "function b" command, not the barcode format.
                self::validateStringRegex($content, __FUNCTION__, "/^[A-Da-d][0-9\$\\+\\-\\.\\/\\:]+[A-Da-d]\$/", "Codabar barcode content");
                break;
            case self::BARCODE_CODE93:
                self::validateInteger($len, 1, 255, __FUNCTION__, "Code93 barcode content length");
                // 255 is a limitation of the "function b" command, not the barcode format.
                self::validateStringRegex($content, __FUNCTION__, "/^[\\x00-\\x7F]+\$/", "Code93 barcode content");
                break;
            case self::BARCODE_CODE128:
                self::validateInteger($len, 1, 255, __FUNCTION__, "Code128 barcode content length");
                // 255 is a limitation of the "function b" command, not the barcode format.
                // The CODE128 encoder is quite complex, so only a very basic header-check is applied here.
                self::validateStringRegex($content, __FUNCTION__, "/^\\{[A-C][\\x00-\\x7F]+\$/", "Code128 barcode content");
                break;
        }
        if (!$this->profile->getSupportsBarcodeB()) {
            // A simpler barcode command which supports fewer codes
            self::validateInteger($type, 65, 71, __FUNCTION__);
            $this->connector->write(self::GS . "k" . chr($type - 65) . $content . self::NUL);
            return;
        }
        // More advanced function B, used in preference
        $this->connector->write(self::GS . "k" . chr($type) . chr(strlen($content)) . $content);
    }

$printer->setFont();
// Reset
$printer->cut();
/* Justification */
$justification = array(Printer::JUSTIFY_LEFT, Printer::JUSTIFY_CENTER, Printer::JUSTIFY_RIGHT);
for ($i = 0; $i < count($justification); $i++) {
    $printer->setJustification($justification[$i]);
    $printer->text("A man a plan a canal panama\n");
}
$printer->setJustification();
// Reset
$printer->cut();
/* Barcodes - see barcode.php for more detail */
$printer->setBarcodeHeight(80);
$printer->setBarcodeTextPosition(Printer::BARCODE_TEXT_BELOW);
$printer->barcode("9876");
$printer->feed();
$printer->cut();
/* Graphics - this demo will not work on some non-Epson printers */
try {
    $logo = EscposImage::load("resources/escpos-php.png", false);
    $imgModes = array(Printer::IMG_DEFAULT, Printer::IMG_DOUBLE_WIDTH, Printer::IMG_DOUBLE_HEIGHT, Printer::IMG_DOUBLE_WIDTH | Printer::IMG_DOUBLE_HEIGHT);
    foreach ($imgModes as $mode) {
        $printer->graphics($logo, $mode);
    }
} catch (Exception $e) {
    /* Images not supported on your PHP, or image file not found */
    $printer->text($e->getMessage() . "\n");
}
$printer->cut();
/* Bit image */