PHP - Subject Or Add 0's To A Barcode

so I have this code that makes a barcode:
Code: [Select]
<?php
session_start(); // Must start session first thing
/* 
Created By Adam Khoury @ www.flashbuilding.com 
-----------------------June 20, 2008----------------------- 
*/
// Here we run a login check
if (!isset($_SESSION['id'])) { 
   echo 'Please <a href="login.php">log in</a> to access your account';
   exit(); 
}
//Connect to the database through our include 
include_once "connect_to_mysql.php";
// Place Session variable 'id' into local variable
$userid = $_SESSION['id'];
// Query member data from the database and ready it for display
$sql = mysql_query("SELECT * FROM members WHERE userid='$userid' LIMIT 1");
while($row = mysql_fetch_array($sql)){
$name = $row['name'];
$phone = $row["phone"];
$username = $row["username"];
$address = $row["address"];
$city = $row["city"];
$state = $row["state"];
$zip = $row["zip"];
$cell = $row["cell"];
$email = $row["email"];
$accounttype = $row["accounttype"];
$rank = $row["rank"];
$badges = $row["badges"];
}

$sql = mysql_query("SELECT * FROM Events WHERE userid='$userid' && eventid=".$_GET['eventid']."");
while($row = mysql_fetch_array($sql)){
$price1 = $row['price1'];
$price2 = $row["price2"];
$price3 = $row["price3"];
$price4 = $row["price4"];
$price5 = $row["price5"];
$price6 = $row["price6"];
$price7 = $row["price7"];
$price8 = $row["price8"];
$title1 = $row['title1'];
$title2 = $row['title2'];
$title3 = $row['title3'];
$title4 = $row['title4'];
$title5 = $row['title5'];
$title6 = $row['title6'];
$title7 = $row['title7'];
$title8 = $row['title8'];
$barcode1 = $row['barcode'];


}



$total = $price1 + $price2 + $price3 + $price4 +$price5 + $price6 + $price7 + $price8;


require('fpdf.php');
class PDF extends FPDF

{
function EAN13($x=1, $y, $barcode, $h=16, $w=.35)
{
    $this->Barcode(13,200,$barcode,$h,$w,13);
}

function UPC_A($x, $y, $barcode, $h=16, $w=.35)
{
    $this->Barcode($x,$y,$barcode,$h,$w,12);
}

function GetCheckDigit($barcode)
{
    //Compute the check digit
    $sum=0;
    for($i=1;$i<=11;$i+=2)
        $sum+=3*$barcode[$i];
    for($i=0;$i<=10;$i+=2)
        $sum+=$barcode[$i];
    $r=$sum%10;
    if($r>0)
        $r=10-$r;
    return $r;
}

function TestCheckDigit($barcode)
{
    //Test validity of check digit
    $sum=0;
    for($i=1;$i<=11;$i+=2)
        $sum+=3*$barcode[$i];
    for($i=0;$i<=10;$i+=2)
        $sum+=$barcode[$i];
    return ($sum+$barcode[12])%10==0;
}

function Barcode($x, $y, $barcode, $h, $w, $len)
{
    //Padding
    $barcode=str_pad($barcode,$len-1,'0',STR_PAD_LEFT);
    if($len==12)
        $barcode='0'.$barcode;
    //Add or control the check digit
    if(strlen($barcode)==12)
        $barcode.=$this->GetCheckDigit($barcode);
    elseif(!$this->TestCheckDigit($barcode))
        $this->Error('Incorrect check digit');
    //Convert digits to bars
    $codes=array(
        'A'=>array(
            '0'=>'0001101','1'=>'0011001','2'=>'0010011','3'=>'0111101','4'=>'0100011',
            '5'=>'0110001','6'=>'0101111','7'=>'0111011','8'=>'0110111','9'=>'0001011'),
        'B'=>array(
            '0'=>'0100111','1'=>'0110011','2'=>'0011011','3'=>'0100001','4'=>'0011101',
            '5'=>'0111001','6'=>'0000101','7'=>'0010001','8'=>'0001001','9'=>'0010111'),
        'C'=>array(
            '0'=>'1110010','1'=>'1100110','2'=>'1101100','3'=>'1000010','4'=>'1011100',
            '5'=>'1001110','6'=>'1010000','7'=>'1000100','8'=>'1001000','9'=>'1110100')
        );
    $parities=array(
        '0'=>array('A','A','A','A','A','A'),
        '1'=>array('A','A','B','A','B','B'),
        '2'=>array('A','A','B','B','A','B'),
        '3'=>array('A','A','B','B','B','A'),
        '4'=>array('A','B','A','A','B','B'),
        '5'=>array('A','B','B','A','A','B'),
        '6'=>array('A','B','B','B','A','A'),
        '7'=>array('A','B','A','B','A','B'),
        '8'=>array('A','B','A','B','B','A'),
        '9'=>array('A','B','B','A','B','A')
        );
    $code='101';
    $p=$parities[$barcode[0]];
    for($i=1;$i<=6;$i++)
        $code.=$codes[$p[$i-1]][$barcode[$i]];
    $code.='01010';
    for($i=7;$i<=12;$i++)
        $code.=$codes['C'][$barcode[$i]];
    $code.='101';
    //Draw bars
    for($i=0;$i<strlen($code);$i++)
    {
        if($code[$i]=='1')
            $this->Rect($x+$i*$w,$y,$w,$h,'F');
    }
    //Print text uder barcode
    $this->SetFont('Arial','B',12);
    $this->Text($x,$y+$h+11/$this->k,substr($barcode,-$len));
}


//Instanciation of inherited class
$pdf=new PDF();
$pdf->AliasNbPages();
$pdf->AddPage();

//* here is part of barcode
$pdf->EAN13(10, 120, $barcode1);
$pdf->SetFont('Arial','B',12);
$pdf->Output('ticket.pdf', 'I');
?> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
</head>

<body>
</body>
</html> 

How do I make it so that the bars still draw correctly, but they don't draw from the code, they draw from $barcode. or how do I put the value of $barcode into there.........currently it has to be a 8 digit $barcode and I believe 4-5 random numbers either on front or back.  I want to be able to make $barcode have the value of an ean 13 barcode(which is how many numbers? 13 right?)  and so that that is the only thing dictating barcode(I do know how to make it more numbers, but I cant do that because of the 5 random ones).  does this make sense?

This topic has been moved to Miscellaneous.

http://www.phpfreaks.com/forums/index.php?topic=316549.0

Hello,
I'm interested in hiring someone if it's too difficult but possible, or doing it myself if isn't too much work (I know basic php) which I doubt.
I want that when I scan an item with my barcode pistol it automatically changes something in my page. I mean, I have a delivery system, so when the package arrive I want just to scan the barcode of the package and that automatically changes the status in the client area on my php site to "Ready".

What are the requirements, and if I need to hire someone what would be the estimated reasonable price to pay.

Thanks a lot.

Best Regards

Hi guys, to compliment my ORM.

On the multiple choice sheets which are scanned into images and then interpreted with the OMR thier is a barcode (like the ones on stuff you buy from the shops), this barcode contains digits to decide the layout of the sheet and how to run the OMR. How can I get PHP to read and understand the barcode. The barcode is originally generated by PHP and now I need PHP to read it and convert to numbers which then I run against mySQL db to enable the OMR to read correctly.

If anyone can suggest a script or method or even a different way to tackle the issue it would be greatly appreciated. Thanks in advance.