Jog My Memory

[Dysan]

It's been a long time since the basis of this script was written, and therefore I can't remember how the values in the array ($replace) are generated.

 

Can anybody jog my memory?

 

<?php
$rectangle_width = 2;
$rectangle_height = 100;

$image = imagecreatetruecolor(300, 188);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);

imagefill($image, 0, 0, $white);
imagerectangle($image, 0, 0, 298, 186, $black);

$find = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '*');
$replace = array('1010001110111010', '1110100010101110', '1011100010101110', '1110111000101010', '1010001110101110', '1110100011101010', '1011100011101010', '1010001011101110', '1110100010111010', '1011100010111010', '1000101110111010');

$string = '*111111*';
$textstring = str_replace($find, $replace, $string);

$j = 11;
$sarray = str_split($textstring, 1);
for($i = 0; $i < count($sarray); $i++)
{
    if($sarray[$i] ==  '0')
    {
        imagefilledrectangle($image, $rectangle_width * $j, 150, ($rectangle_width * $j) + $rectangle_width, $rectangle_height, $white);
        $j++;
        
    }
    elseif($sarray[$i] ==  '1')
    {
        imagefilledrectangle($image, $rectangle_width * $j, 150, ($rectangle_width * $j) + $rectangle_width, $rectangle_height, $black);
        $j++;
    }
} 

imagettftext($image, 10, 0, 120, 170, $black, "Verdana", $string);

header("Content-type: image/jpeg");
imagejpeg($image);
imagedestroy($image);
?>

[niwa3836]

Hi, when you say generated, do you mean how were they invented? Dont know the answer but its some clever sole who do it. Doesnt look like Code39 though?

              case ' ':

                        return "011000100";   

                case '$':

                        return "010101000";           

                case '%':

                        return "000101010";

                case '*':

                        return "010010100"; // * Start/Stop

                case '+':

                        return "010001010";

                case '|':

                        return "010000101";

                case '.':

                        return "110000100";

                case '/':

                        return "010100010";

case '-':

return "010000101";

                case '0':

                        return "000110100";

                case '1':

                        return "100100001";

                case '2':

                        return "001100001";

                case '3':

                        return "101100000";

                case '4':

                        return "000110001";

                case '5':

                        return "100110000";

                case '6':

                        return "001110000";

                case '7':

                        return "000100101";

                case '8':

                        return "100100100";

                case '9':

                        return "001100100";

                case 'A':

                        return "100001001";

                case 'B':

                        return "001001001";

                case 'C':

                        return "101001000";

                case 'D':

                        return "000011001";

                case 'E':

                        return "100011000";

                case 'F':

                        return "001011000";

                case 'G':

                        return "000001101";

                case 'H':

                        return "100001100";

                case 'I':

                        return "001001100";

                case 'J':

                        return "000011100";

                case 'K':

                        return "100000011";

                case 'L':

                        return "001000011";

                case 'M':

                        return "101000010";

                case 'N':

                        return "000010011";

                case 'O':

                        return "100010010";

                case 'P':

                        return "001010010";

                case 'Q':

                        return "000000111";

                case 'R':

                        return "100000110";

                case 'S':

                        return "001000110";

                case 'T':

                        return "000010110";

                case 'U':

                        return "110000001";

                case 'V':

                        return "011000001";

                case 'W':

                        return "111000000";

                case 'X':

                        return "010010001";

                case 'Y':

                        return "110010000";

                case 'Z':

                        return "011010000";

                default:

                        return "011000100";

 

What coding is yours?

 

On a seperate note, I am doing something similar with code39 (I have posted today question on printer_ functions). I am looking to get the output sent to the printer, but struggling with GD / Image components as printer_ wants BMP and GD doesnt appear to do it. Still I am a thicky

 

 

[Dysan]

What coding is yours?

What do you mean by this?

Did you get that case statement from here?: http://www.sid6581.net/cs/php-scripts/barcode/

 

 

[Dysan]

I have just found out that they are not binary values, they are a string. According to the page found at the following URL, each character has 6 narrow and 3 wide bars plus an ending delimiter.

 

http://www.barcodeman.com/info/c39_1.php3

 

There is a 3:1 ratio for wide bars meaning the 3 wide bars take the space of 9 narrow ones. So 3 wide (equiv. 9 narrow) plus 6 narrow + delimiter = 16.

 

Can a script be created that automatically generates the string automatically, allowing me to simply copy and paste the code into my barcode script?