Eduardokum\LaravelBoleto\Boleto\Render\AbstractPdf::i25 PHP Method

    function i25($xpos, $ypos, $code, $basewidth = 1, $height = 10)
    {
        $wide = $basewidth;
        $narrow = $basewidth / 3;
        // wide/narrow codes for the digits
        $barChar['0'] = 'nnwwn';
        $barChar['1'] = 'wnnnw';
        $barChar['2'] = 'nwnnw';
        $barChar['3'] = 'wwnnn';
        $barChar['4'] = 'nnwnw';
        $barChar['5'] = 'wnwnn';
        $barChar['6'] = 'nwwnn';
        $barChar['7'] = 'nnnww';
        $barChar['8'] = 'wnnwn';
        $barChar['9'] = 'nwnwn';
        $barChar['A'] = 'nn';
        $barChar['Z'] = 'wn';
        // add leading zero if code-length is odd
        if (strlen($code) % 2 != 0) {
            $code = '0' . $code;
        }
        $this->SetFont('Arial', '', 10);
        //        $this->Text($xpos, $ypos + $height + 4, $code);
        $this->SetFillColor(0);
        // add start and stop codes
        $code = 'AA' . strtolower($code) . 'ZA';
        for ($i = 0; $i < strlen($code); $i = $i + 2) {
            // choose next pair of digits
            $charBar = $code[$i];
            $charSpace = $code[$i + 1];
            // check whether it is a valid digit
            if (!isset($barChar[$charBar])) {
                $this->Error('Invalid character in barcode: ' . $charBar);
            }
            if (!isset($barChar[$charSpace])) {
                $this->Error('Invalid character in barcode: ' . $charSpace);
            }
            // create a wide/narrow-sequence (first digit=bars, second digit=spaces)
            $seq = '';
            for ($s = 0; $s < strlen($barChar[$charBar]); $s++) {
                $seq .= $barChar[$charBar][$s] . $barChar[$charSpace][$s];
            }
            for ($bar = 0; $bar < strlen($seq); $bar++) {
                // set lineWidth depending on value
                if ($seq[$bar] == 'n') {
                    $lineWidth = $narrow;
                } else {
                    $lineWidth = $wide;
                }
                // draw every second value, because the second digit of the pair is represented by the spaces
                if ($bar % 2 == 0) {
                    $this->Rect($xpos, $ypos, $lineWidth, $height, 'F');
                }
                $xpos += $lineWidth;
            }
        }
    }