public function testBarcodeLib()
{
$pad = BarcodeLib::padUPC('1');
$this->assertEquals('0000000000001', $pad, 'BarcodeLib::padUPC failed');
$checks = array('12345678901' => '2', '123456789012' => '8', '1234567890123' => '1');
foreach ($checks as $barcode => $check_digit) {
$calc = BarcodeLib::getCheckDigit($barcode);
$this->assertEquals($check_digit, $calc, 'Failed check digit calculation for ' . $barcode);
$with_check = $barcode . $check_digit;
$without_check = $barcode . ($check_digit + 1) % 10;
$this->assertEquals(true, BarcodeLib::verifyCheckdigit($with_check));
$this->assertEquals(false, BarcodeLib::verifyCheckdigit($without_check));
}
$upc_a = BarcodeLib::UPCACheckDigit('12345678901');
$this->assertEquals('123456789012', $upc_a, 'Failed UPC A check digit calculation');
$ean_13 = BarcodeLib::EAN13CheckDigit('123456789012');
$this->assertEquals('1234567890128', $ean_13, 'Failed EAN 13 check digit calculation');
$norm = BarcodeLib::normalize13('12345678901');
$this->assertEquals('0123456789012', $norm, 'Failed normalizing UPC-A to 13 digits');
$norm = BarcodeLib::normalize13('123456789012');
$this->assertEquals('1234567890128', $norm, 'Failed normalizing EAN-13 to 13 digits');
}
/**
Draw barcode on given PDF
@param $upc [string] barcode value (UPC or EAN)
@param $pdf [object] FPDF instance
@param $x [numeric] x-coordinate of barcode
@param $y [numeric] y-coordinate of barcode
@param $args [keyed array] of extra options
- height [default 16] height of the barcode
- width [default 0.35] width of *each* bar
- align [default C] horizontal alignment of barcode number (L/C/R)
- valign [default B] vertical alignment of barcode number
(T, "top", above barcode) or (B, "botton", below barcode)
- prefix [default empty] prepend value to barcode number
- suffix [default empty] append value to barcode number
- font [default Arial] name of font for barcode number
- fontsize [default 9] size of font for barcode number
*/
public function drawBarcode($upc, $pdf, $x, $y, $args = array())
{
$height = isset($args['height']) ? $args['height'] : 16;
$width = isset($args['width']) ? $args['width'] : 0.35;
$align = isset($args['align']) ? $args['align'] : 'C';
$valign = isset($args['valign']) ? $args['valign'] : 'B';
$prefix = isset($args['prefix']) ? $args['prefix'] : '';
$suffix = isset($args['suffix']) ? $args['suffix'] : '';
$font = isset($args['font']) ? $args['font'] : 'Arial';
$fontsize = isset($args['fontsize']) ? $args['fontsize'] : 9;
$upc = ltrim($upc, '0');
$is_ean = false;
if (strlen($upc) == 12) {
// must be EAN
$check = \BarcodeLib::getCheckDigit($upc);
$upc .= $check;
$is_ean = true;
} else {
$upc = str_pad($upc, 11, '0', STR_PAD_LEFT);
$check = \BarcodeLib::getCheckDigit($upc);
$upc = '0' . $upc . $check;
}
//Convert digits to bars
$code = $this->upcToBitString($upc);
//Draw bars
$full_width = 0;
for ($i = 0; $i < strlen($code); $i++) {
if ($code[$i] == '1') {
$pdf->Rect($x + $i * $width, $y, $width, $height, 'F');
}
$full_width += $width;
}
// Print text under barcode
// omits first digit; should always be zero
if ($fontsize > 0) {
$pdf->SetFont($font, '', $fontsize);
if ($valign == 'T') {
$pdf->SetXY($x, $y - 5);
} else {
$pdf->SetXY($x, $y + $height);
}
$pdf->Cell($full_width, 5, $prefix . substr($upc, $is_ean ? -13 : -12) . $suffix, 0, 0, $align);
}
return $pdf;
}
