function BARCODE::ConvertUPCAtoUPCE in Barcode 6

1 call to BARCODE::ConvertUPCAtoUPCE()

BARCODE::_upceBarcode in ./barcode.inc.php

File

./barcode.inc.php, line 1224

Class

BARCODE

Code

function ConvertUPCAtoUPCE($upca) {
  $csumTotal = 0;

  // The checksum working variable starts at zero
  $upce = "";

  // If the source message string is less than 12 characters long, we make it 12 characters
  if (strlen($upca) < 12) {
    $barnumber = str_pad($barnumber, 12, "0", STR_PAD_LEFT);
  }
  if (substr($upca, 0, 1) != '0' && substr($upca, 0, 1) != '1') {
    $this->_error = 'Invalid Number System (only 0 & 1 are valid)';
    return false;
  }
  else {
    if (substr($upca, 3, 3) == '000' || substr($upca, 3, 3) == '100' || substr($upca, 3, 3) == '200') {
      $upce = substr($upca, 1, 2) . substr($upca, 8, 3) . substr($upca, 3, 1);
    }
    else {
      if (substr($upca, 4, 2) == '00') {
        $upce = substr($upca, 1, 2) . substr($upca, 9, 2) . '3';
      }
      else {
        if (substr($upca, 5, 1) == '0') {
          $upce = substr($upca, 1, 4) . substr($upca, 10, 1) . '4';
        }
        else {
          if (substr($upca, 10, 1) >= '5') {
            $upce = substr($upca, 1, 5) . substr($upca, 10, 1);
          }
          else {
            $this->_error = 'Invalid product code (00005 to 00009 are valid)';
            return false;
          }
        }
      }
    }
  }
  return $upce;
}