ckroon
Posts: 869
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| Posted: 07/22/2009, 3:21 PM |
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Hope this helps someone.
Paste the code below into a page and call it barcode.php
Keep it in the same folder as the page that will have the barcode on it.
On your barcode page, place a From->Image there.
Right click it and go to IMG properties.
type this in the image text entry box:
barcode.php?barcode={barcode}&quality=100&width=150&height=40
Near the image, put a hidden field called barcode and populate it with the value you need in the barcode, either by CCGetFromGet ("urlvalue","") or put it in a grid and call it from a db field.
Either way, it will now be a scannable barcode.
Enjoy!
Thanks to Charles Scheffold for the code. This made my life very easy.
NOTE: barcode.php had to be broken up into two pieces due to character limit on posts. Sorry.
_________________
Walter Kempees...you are dearly missed. |
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ckroon
Posts: 869
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| Posted: 07/22/2009, 3:23 PM |
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<?php
/*===========================================================================*/
/* PHP Barcode Image Generator v1.0 [9/28/2000]
Copyright (C)2000 by Charles J. Scheffold -cs@sid6581.net
---
UPDATE 5/10/2005 by C.Scheffold
Changed FontHeight to -2 if no text is to be displayed (this eliminates
the whitespace at the bottom of the image)
---
UPDATE 03/12/2005 by C.Scheffold
Added '-' character to translation table
---
UPDATE 09/21/2002 by Laurent NAVARRO -ln@altidev.com - http://www.altidev.com
Updated to be compatible with register_globals = off and on
---
UPDATE 4/6/2001 - Important Note! This script was written with the assumption
that "register_globals = On" is defined in your PHP.INI file! It will not
work as-is and as described unless this is set. My PHP came with this
enabled by default, but apparently many people have turned it off. Either
turn it on or modify the startup code to pull the CGI variables in the old
fashioned way (from the HTTP* arrays). If you just want to use the functions
and pass the variables yourself, well then go on with your bad self.
---
This code is hereby released into the public domain.
Use it, abuse it, just don't get caught using it for something stupid.
The only barcode type currently supported is Code 3 of 9. Don't ask about
adding support for others! This is a script I wrote for my own use. I do
plan to add more types as time permits but currently I only require
Code 3 of 9 for my purposes. Just about every scanner on the market today
can read it.
PARAMETERS:
-----------
$barcode = [required] The barcode you want to generate
$type = (default=0) It's 0 for Code 3 of 9 (the only one supported)
$width = (default=160) Width of image in pixels. The image MUST be wide
enough to handle the length of the given value. The default
value will probably be able to display about 6 digits. If you
get an error message, make it wider!
$height = (default=80) Height of image in pixels
$format = (default=jpeg) Can be "jpeg", "png", or "gif"
$quality = (default=100) For JPEG only: ranges from 0-100
$text = (default=1) 0 to disable text below barcode, >=1 to enable
NOTE: You must have GD-1.8 or higher compiled into PHP
in order to use PNG and JPEG. GIF images only work with
GD-1.5 and lower. (http://www.boutell.com)
ANOTHER NOTE: If you actually intend to print the barcodes
and scan them with a scanner, I highly recommend choosing
JPEG with a quality of 100. Most browsers can't seem to print
a PNG without mangling it beyond recognition.
USAGE EXAMPLES FOR ANY PLAIN OLD HTML DOCUMENT:
-----------------------------------------------
<IMG SRC="barcode.php?barcode=HELLO&quality=75">
<IMG SRC="barcode.php?barcode=123456&width=320&height=200">
*/
/*=============================================================================*/
//-----------------------------------------------------------------------------
// Startup code
//-----------------------------------------------------------------------------
if(isset($_GET["text"])) $text=$_GET["text"];
if(isset($_GET["format"])) $format=$_GET["format"];
if(isset($_GET["quality"])) $quality=$_GET["quality"];
if(isset($_GET["width"])) $width=$_GET["width"];
if(isset($_GET["height"])) $height=$_GET["height"];
if(isset($_GET["type"])) $type=$_GET["type"];
if(isset($_GET["barcode"])) $barcode=$_GET["barcode"];
if (!isset ($text)) $text = 1;
if (!isset ($type)) $type = 1;
if (empty ($quality)) $quality = 100;
if (empty ($width)) $width = 160;
if (empty ($height)) $height = 80;
if (!empty ($format)) $format = strtoupper ($format);
else $format="PNG";
switch ($type)
{
default:
$type = 1;
case 1:
Barcode39 ($barcode, $width, $height, $quality, $format, $text);
break;
}
//end of first code post...
_________________
Walter Kempees...you are dearly missed. |
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ckroon
Posts: 869
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| Posted: 07/22/2009, 3:24 PM |
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//start second half of code
//-----------------------------------------------------------------------------
// Generate a Code 3 of 9 barcode
//-----------------------------------------------------------------------------
function Barcode39 ($barcode, $width, $height, $quality, $format, $text)
{
switch ($format)
{
default:
$format = "JPEG";
case "JPEG":
header ("Content-type: image/jpeg");
break;
case "PNG":
header ("Content-type: image/png");
break;
case "GIF":
header ("Content-type: image/gif");
break;
}
$im = ImageCreate ($width, $height)
or die ("Cannot Initialize new GD image stream");
$White = ImageColorAllocate ($im, 255, 255, 255);
$Black = ImageColorAllocate ($im, 0, 0, 0);
//ImageColorTransparent ($im, $White);
ImageInterLace ($im, 1);
$NarrowRatio = 20;
$WideRatio = 55;
$QuietRatio = 35;
$nChars = (strlen($barcode)+2) * ((6 * $NarrowRatio) + (3 * $WideRatio) + ($QuietRatio));
$Pixels = $width / $nChars;
$NarrowBar = (int)(20 * $Pixels);
$WideBar = (int)(55 * $Pixels);
$QuietBar = (int)(35 * $Pixels);
$ActualWidth = (($NarrowBar * 6) + ($WideBar*3) + $QuietBar) * (strlen ($barcode)+2);
if (($NarrowBar == 0) || ($NarrowBar == $WideBar) || ($NarrowBar == $QuietBar) || ($WideBar == 0) || ($WideBar == $QuietBar) || ($QuietBar == 0))
{
ImageString ($im, 1, 0, 0, "Image is too small!", $Black);
OutputImage ($im, $format, $quality);
exit;
}
$CurrentBarX = (int)(($width - $ActualWidth) / 2);
$Color = $White;
$BarcodeFull = "*".strtoupper ($barcode)."*";
settype ($BarcodeFull, "string");
$FontNum = 3;
$FontHeight = ImageFontHeight ($FontNum);
$FontWidth = ImageFontWidth ($FontNum);
if ($text != 0)
{
$CenterLoc = (int)(($width-1) / 2) - (int)(($FontWidth * strlen($BarcodeFull)) / 2);
ImageString ($im, $FontNum, $CenterLoc, $height-$FontHeight, "$BarcodeFull", $Black);
}
else
{
$FontHeight=-2;
}
for ($i=0; $i<strlen($BarcodeFull); $i++)
{
$StripeCode = Code39 ($BarcodeFull[$i]);
for ($n=0; $n < 9; $n++)
{
if ($Color == $White) $Color = $Black;
else $Color = $White;
switch ($StripeCode[$n])
{
case '0':
ImageFilledRectangle ($im, $CurrentBarX, 0, $CurrentBarX+$NarrowBar, $height-1-$FontHeight-2, $Color);
$CurrentBarX += $NarrowBar;
break;
case '1':
ImageFilledRectangle ($im, $CurrentBarX, 0, $CurrentBarX+$WideBar, $height-1-$FontHeight-2, $Color);
$CurrentBarX += $WideBar;
break;
}
}
$Color = $White;
ImageFilledRectangle ($im, $CurrentBarX, 0, $CurrentBarX+$QuietBar, $height-1-$FontHeight-2, $Color);
$CurrentBarX += $QuietBar;
}
OutputImage ($im, $format, $quality);
}
//-----------------------------------------------------------------------------
// Output an image to the browser
//-----------------------------------------------------------------------------
function OutputImage ($im, $format, $quality)
{
switch ($format)
{
case "JPEG":
ImageJPEG ($im, "", $quality);
break;
case "PNG":
ImagePNG ($im);
break;
case "GIF":
ImageGIF ($im);
break;
}
}
//-----------------------------------------------------------------------------
// Returns the Code 3 of 9 value for a given ASCII character
//-----------------------------------------------------------------------------
function Code39 ($Asc)
{
switch ($Asc)
{
case ' ':
return "011000100";
case '$':
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";
}
}
?>
_________________
Walter Kempees...you are dearly missed. |
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Hardline
Posts: 24
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| Posted: 12/23/2009, 7:55 AM |
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I realize this is an old thread, but there is a PEAR class that does all of this using GD2, it's part of the Image library. It covers Interleave 2 of 5, Ean13, Code39, UPC-A, Code128 and PostNet.
There's very little that PEAR doesn't have.
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