como el titulo lo dice vamos a usar la classe Barcode de zend (no zend completo)
Zend_Barcode:: que la llamaremos Barcode.php
Código PHP:
<?php
class Zend_Barcode
{
public static function factory(
$barcode,
$renderer = 'image',
$barcodeConfig = array(),
$rendererConfig = array(),
$automaticRenderError = true
) {
/*
* Convert Zend_Config argument to plain string
* barcode name and separate config object.
*/
if ($barcode instanceof Zend_Config) {
if (isset($barcode->rendererParams)) {
$rendererConfig = $barcode->rendererParams->toArray();
}
if (isset($barcode->renderer)) {
$renderer = (string) $barcode->renderer;
}
if (isset($barcode->barcodeParams)) {
$barcodeConfig = $barcode->barcodeParams->toArray();
}
if (isset($barcode->barcode)) {
$barcode = (string) $barcode->barcode;
} else {
$barcode = null;
}
}
try {
$barcode = self::makeBarcode($barcode, $barcodeConfig);
$renderer = self::makeRenderer($renderer, $rendererConfig);
} catch (Zend_Exception $e) {
$renderable = ($e instanceof Zend_Barcode_Exception) ? $e->isRenderable() : false;
if ($automaticRenderError && $renderable) {
$barcode = self::makeBarcode('error', array(
'text' => $e->getMessage()
));
$renderer = self::makeRenderer($renderer, array());
} else {
throw $e;
}
}
$renderer->setAutomaticRenderError($automaticRenderError);
return $renderer->setBarcode($barcode);
}
public static function makeBarcode($barcode, $barcodeConfig = array())
{
if ($barcode instanceof Zend_Barcode_Object_ObjectAbstract) {
return $barcode;
}
/*
* Convert Zend_Config argument to plain string
* barcode name and separate config object.
*/
if ($barcode instanceof Zend_Config) {
if (isset($barcode->barcodeParams) && $barcode->barcodeParams instanceof Zend_Config) {
$barcodeConfig = $barcode->barcodeParams->toArray();
}
if (isset($barcode->barcode)) {
$barcode = (string) $barcode->barcode;
} else {
$barcode = null;
}
}
if ($barcodeConfig instanceof Zend_Config) {
$barcodeConfig = $barcodeConfig->toArray();
}
/*
* Verify that barcode parameters are in an array.
*/
if (!is_array($barcodeConfig)) {
require_once 'Zend/Barcode/Exception.php';
throw new Zend_Barcode_Exception(
'Barcode parameters must be in an array or a Zend_Config object'
);
}
/*
* Verify that an barcode name has been specified.
*/
if (!is_string($barcode) || empty($barcode)) {
require_once 'Zend/Barcode/Exception.php';
throw new Zend_Barcode_Exception(
'Barcode name must be specified in a string'
);
}
/*
* Form full barcode class name
*/
$barcodeNamespace = 'Zend_Barcode_Object';
if (isset($barcodeConfig['barcodeNamespace'])) {
$barcodeNamespace = $barcodeConfig['barcodeNamespace'];
}
$barcodeName = strtolower($barcodeNamespace . '_' . $barcode);
$barcodeName = str_replace(' ', '_', ucwords(
str_replace( '_', ' ', $barcodeName)
));
/*
* Load the barcode class. This throws an exception
* if the specified class cannot be loaded.
*/
if (!class_exists($barcodeName)) {
require_once 'Zend/Loader.php';
Zend_Loader::loadClass($barcodeName);
}
/*
* Create an instance of the barcode class.
* Pass the config to the barcode class constructor.
*/
$bcAdapter = new $barcodeName($barcodeConfig);
/*
* Verify that the object created is a descendent of the abstract barcode type.
*/
if (!$bcAdapter instanceof Zend_Barcode_Object_ObjectAbstract) {
require_once 'Zend/Barcode/Exception.php';
throw new Zend_Barcode_Exception(
"Barcode class '$barcodeName' does not extend Zend_Barcode_Object_ObjectAbstract"
);
}
return $bcAdapter;
}
public static function makeRenderer($renderer = 'image', $rendererConfig = array())
{
if ($renderer instanceof Zend_Barcode_Renderer_RendererAbstract) {
return $renderer;
}
/*
* Convert Zend_Config argument to plain string
* barcode name and separate config object.
*/
if ($renderer instanceof Zend_Config) {
if (isset($renderer->rendererParams)) {
$rendererConfig = $renderer->rendererParams->toArray();
}
if (isset($renderer->renderer)) {
$renderer = (string) $renderer->renderer;
}
}
if ($rendererConfig instanceof Zend_Config) {
$rendererConfig = $rendererConfig->toArray();
}
/*
* Verify that barcode parameters are in an array.
*/
if (!is_array($rendererConfig)) {
require_once 'Zend/Barcode/Exception.php';
$e = new Zend_Barcode_Exception(
'Barcode parameters must be in an array or a Zend_Config object'
);
$e->setIsRenderable(false);
throw $e;
}
/*
* Verify that an barcode name has been specified.
*/
if (!is_string($renderer) || empty($renderer)) {
require_once 'Zend/Barcode/Exception.php';
$e = new Zend_Barcode_Exception(
'Renderer name must be specified in a string'
);
$e->setIsRenderable(false);
throw $e;
}
/*
* Form full barcode class name
*/
$rendererNamespace = 'Zend_Barcode_Renderer';
if (isset($rendererConfig['rendererNamespace'])) {
$rendererNamespace = $rendererConfig['rendererNamespace'];
}
$rendererName = strtolower($rendererNamespace . '_' . $renderer);
$rendererName = str_replace(' ', '_', ucwords(
str_replace( '_', ' ', $rendererName)
));
/*
* Load the barcode class. This throws an exception
* if the specified class cannot be loaded.
*/
if (!class_exists($rendererName)) {
require_once 'Zend/Loader.php';
Zend_Loader::loadClass($rendererName);
}
/*
* Create an instance of the barcode class.
* Pass the config to the barcode class constructor.
*/
$rdrAdapter = new $rendererName($rendererConfig);
/*
* Verify that the object created is a descendent of the abstract barcode type.
*/
if (!$rdrAdapter instanceof Zend_Barcode_Renderer_RendererAbstract) {
require_once 'Zend/Barcode/Exception.php';
$e = new Zend_Barcode_Exception(
"Renderer class '$rendererName' does not extend Zend_Barcode_Renderer_RendererAbstract"
);
$e->setIsRenderable(false);
throw $e;
}
return $rdrAdapter;
}
public static function render(
$barcode,
$renderer,
$barcodeConfig = array(),
$rendererConfig = array()
) {
self::factory($barcode, $renderer, $barcodeConfig, $rendererConfig)->render();
}
public static function draw(
$barcode,
$renderer,
$barcodeConfig = array(),
$rendererConfig = array()
) {
return self::factory($barcode, $renderer, $barcodeConfig, $rendererConfig)->draw();
}
public static function setBarcodeFont($font)
{
require_once 'Zend/Barcode/Object/ObjectAbstract.php';
Zend_Barcode_Object_ObjectAbstract::setBarcodeFont($font);
}
}
?> 
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