Barcode creation using Zend_Barcode class | Zend_Barcode Programmer's Reference Guide | Zend_Barcode Renderers

# Zend_Barcode Objects

Barcode objects allow you to generate barcodes independently of the rendering support. After generation, you can retrieve the barcode as an array of drawing instructions that you can provide to a renderer.

Objects have a large number of options. Most of them are common to all objects. These options can be set in four ways:

- As an array or a Zend_Config object passed to the constructor.

- As an array passed to the setOptions() method.

- As a Zend_Config object passed to the setConfig() method.

- Via individual setters for each configuration type.

Example #1 Different ways to parameterize a barcode object

1. $options = array('text' => 'ZEND-FRAMEWORK', 'barHeight' => 40);
3. // Case 1: constructor
4. $barcode = new Zend_Barcode_Object_Code39($options);
6. // Case 2: setOptions()
7. $barcode = new Zend_Barcode_Object_Code39();
8. $barcode->setOptions($options);
10. // Case 3: setConfig()
11. $config = new Zend_Config($options);
12. $barcode = new Zend_Barcode_Object_Code39();
13. $barcode->setConfig($config);
15. // Case 4: individual setters
16. $barcode = new Zend_Barcode_Object_Code39();
17. $barcode->setText('ZEND-FRAMEWORK')
18. ->setBarHeight(40);

# Common Options

In the following list, the values have no units; we will use the term "unit." For example, the default value of the "thin bar" is "1 unit". The real units depend on the rendering support (see the renderers documentation for more information). Setters are each named by uppercasing the initial letter of the option and prefixing the name with "set" (e.g. "barHeight" becomes "setBarHeight"). All options have a corresponding getter prefixed with "get" (e.g. "getBarHeight"). Available options are:

Common Options
Option | Data Type | Default Value | Description
--- | --- | --- | ---
barcodeNamespace | String | Zend_Barcode_Object | Namespace of the barcode; for example, if you need to extend the embedding objects
barHeight | Integer | 50 | Height of the bars
barThickWidth | Integer | 3 | Width of the thick bar
barThinWidth | Integer | 1 | Width of the thin
factor | Integer | 1 | Factor by which to multiply bar widths and font sizes
foreColor | Integer | 0 (black) | Color of the bar and the text. Could be provided as an integer or as a HTML value (e.g. "#333333")
backgroundColor | Integer or String | 16777125 (white) | Color of the background. Could be provided as an integer or as a HTML value (e.g. "#333333")
reverseColor | Boolean | `FALSE` | Allow switching the color of the bar and the background
orientation | Integer | 0 | Orientation of the barcode
font | String or Integer | `NULL` | Font path to a TTF font or a number between 1 and 5 if using image generation with GD (internal fonts)
fontSize | Integer | 10 | Size of the font (not applicable with numeric fonts)
withBorder | Boolean | `FALSE` | Draw a border around the barcode and the quiet zones
withQuietZones | Boolean | `TRUE` | Leave a quiet zone before and after the barcode
drawText | Boolean | `TRUE` | Set if the text is displayed below the barcode
stretchText | Boolean | `FALSE` | Specify if the text is stretched all along the barcode
withChecksum | Boolean | `FALSE` | Indicate whether or not the checksum is automatically added to the barcode
withChecksumInText | Boolean | `FALSE` | Indicate whether or not the checksum is displayed in the textual representation
text | String | `NULL` | The text to represent as a barcode

# Particular case of static setBarcodeFont()

You can set a commont font for all your objects by using the static method Zend_Barcode_Object::setBarcodeFont(). This value can be always be overridden for individual objects by using the setFont() method.

1. // In your bootstrap:
2. Zend_Barcode_Object::setBarcodeFont('my_font.ttf');
4. // Later in your code:
5. Zend_Barcode::render(
6. 'code39',
7. 'pdf',
8. array('text' => 'ZEND-FRAMEWORK')
9. ); // will use 'my_font.ttf'
11. // or:
12. Zend_Barcode::render(
13. 'code39',
14. 'image',
15. array(
16. 'text' => 'ZEND-FRAMEWORK',
17. 'font' => 3
18. )
19. ); // will use the 3rd GD internal font

# Common Additional Getters

Common Getters
Getter | Data Type | Description
--- | --- | ---
getType() | String | Return the name of the barcode class without the namespace (e.g. Zend_Barcode_Object_Code39 returns simply "code39")
getRawText() | String | Return the original text provided to the object
getTextToDisplay() | String | Return the text to display, including, if activated, the checksum value
getQuietZone() | Integer | Return the size of the space needed before and after the barcode without any drawing
getInstructions() | Array | Return drawing instructions as an array.
getHeight($recalculate = false) | Integer | Return the height of the barcode calculated after possible rotation
getWidth($recalculate = false) | Integer | Return the width of the barcode calculated after possible rotation
getOffsetTop($recalculate = false) | Integer | Return the position of the top of the barcode calculated after possible rotation
getOffsetLeft($recalculate = false) | Integer | Return the position of the left of the barcode calculated after possible rotation

# Description of shipped barcodes

You will find below detailed information about all barcode types shipped by default with Zend Framework.

# Zend_Barcode_Object_Error

This barcode is a special case. It is internally used to automatically render an exception caught by the Zend_Barcode component.

# Zend_Barcode_Object_Code25

- Name: Code 25 (or Code 2 of 5 or Code 25 Industrial)

- Allowed characters: '0123456789'

- Checksum: optional (modulo 10)

- Length: variable

There are no particular options for this barcode.

# Zend_Barcode_Object_Code25interleaved

This barcode extends Zend_Barcode_Object_Code25 (Code 2 of 5), and has the same particulars and options, and adds the following:

- Name: Code 2 of 5 Interleaved

- Allowed characters: '0123456789'

- Checksum: optional (modulo 10)

- Length: variable (always even number of characters)

Available options include:

Zend_Barcode_Object_Code25interleaved Options
Option | Data Type | Default Value | Description
--- | --- | --- | ---
withBearerBars | Boolean | `FALSE` | Draw a thick bar at the top and the bottom of the barcode.

> Note: If the number of characters is not even, Zend_Barcode_Object_Code25interleaved will automatically prepend the missing zero to the barcode text.

# Zend_Barcode_Object_Ean2

This barcode extends Zend_Barcode_Object_Ean5 (EAN 5), and has the same particulars and options, and adds the following:

- Name: EAN-2

- Allowed characters: '0123456789'

- Checksum: only use internally but not displayed

- Length: 2 characters

There are no particular options for this barcode.

> Note: If the number of characters is lower than 2, Zend_Barcode_Object_Ean2 will automatically prepend the missing zero to the barcode text.

# Zend_Barcode_Object_Ean5

This barcode extends Zend_Barcode_Object_Ean13 (EAN 13), and has the same particulars and options, and adds the following:

- Name: EAN-5

- Allowed characters: '0123456789'

- Checksum: only use internally but not displayed

- Length: 5 characters

There are no particular options for this barcode.

> Note: If the number of characters is lower than 5, Zend_Barcode_Object_Ean5 will automatically prepend the missing zero to the barcode text.

# Zend_Barcode_Object_Ean8

This barcode extends Zend_Barcode_Object_Ean13 (EAN 13), and has the same particulars and options, and adds the following:

- Name: EAN-8

- Allowed characters: '0123456789'

- Checksum: mandatory (modulo 10)

- Length: 8 characters (including checksum)

There are no particular options for this barcode.

> Note: If the number of characters is lower than 8, Zend_Barcode_Object_Ean8 will automatically prepend the missing zero to the barcode text.

# Zend_Barcode_Object_Ean13

- Name: EAN-13

- Allowed characters: '0123456789'

- Checksum: mandatory (modulo 10)

- Length: 13 characters (including checksum)

There are no particular options for this barcode.

> Note: If the number of characters is lower than 13, Zend_Barcode_Object_Ean13 will automatically prepend the missing zero to the barcode text.
> The option withQuietZones has no effect with this barcode.

# Zend_Barcode_Object_Code39

- Name: Code 39

- Allowed characters: '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ -.$/+%'

- Checksum: optional (modulo 43)

- Length: variable

> Note: Zend_Barcode_Object_Code39 will automatically add the start and stop characters ('*') for you.

There are no particular options for this barcode.

# Zend_Barcode_Object_Identcode

This barcode extends Zend_Barcode_Object_Code25interleaved (Code 2 of 5 Interleaved), and inherits some of its capabilities; it also has a few particulars of its own.

- Name: Identcode (Deutsche Post Identcode)

- Allowed characters: '0123456789'

- Checksum: mandatory (modulo 10 different from Code25)

- Length: 12 characters (including checksum)

There are no particular options for this barcode.

> Note: If the number of characters is lower than 12, Zend_Barcode_Object_Identcode will automatically prepend missing zeros to the barcode text.

# Zend_Barcode_Object_Itf14

This barcode extends Zend_Barcode_Object_Code25interleaved (Code 2 of 5 Interleaved), and inherits some of its capabilities; it also has a few particulars of its own.

- Name: ITF-14

- Allowed characters: '0123456789'

- Checksum: mandatory (modulo 10)

- Length: 14 characters (including checksum)

There are no particular options for this barcode.

> Note: If the number of characters is lower than 14, Zend_Barcode_Object_Itf14 will automatically prepend missing zeros to the barcode text.

# Zend_Barcode_Object_Leitcode

This barcode extends Zend_Barcode_Object_Identcode (Deutsche Post Identcode), and inherits some of its capabilities; it also has a few particulars of its own.

- Name: Leitcode (Deutsche Post Leitcode)

- Allowed characters: '0123456789'

- Checksum: mandatory (modulo 10 different from Code25)

- Length: 14 characters (including checksum)

There are no particular options for this barcode.

> Note: If the number of characters is lower than 14, Zend_Barcode_Object_Leitcode will automatically prepend missing zeros to the barcode text.

# Zend_Barcode_Object_Planet

- Name: Planet (PostaL Alpha Numeric Encoding Technique)

- Allowed characters: '0123456789'

- Checksum: mandatory (modulo 10)

- Length: 12 or 14 characters (including checksum)

There are no particular options for this barcode.

# Zend_Barcode_Object_Postnet

- Name: Postnet (POSTal Numeric Encoding Technique)

- Allowed characters: '0123456789'

- Checksum: mandatory (modulo 10)

- Length: 6, 7, 10 or 12 characters (including checksum)

There are no particular options for this barcode.

# Zend_Barcode_Object_Royalmail

- Name: Royal Mail or RM4SCC (Royal Mail 4-State Customer Code)

- Allowed characters: '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'

- Checksum: mandatory

- Length: variable

There are no particular options for this barcode.

# Zend_Barcode_Object_Upca

This barcode extends Zend_Barcode_Object_Ean13 (EAN-13), and inherits some of its capabilities; it also has a few particulars of its own.

- Name: UPC-A (Universal Product Code)

- Allowed characters: '0123456789'

- Checksum: mandatory (modulo 10)

- Length: 12 characters (including checksum)

There are no particular options for this barcode.

> Note: If the number of characters is lower than 12, Zend_Barcode_Object_Upca will automatically prepend missing zeros to the barcode text.
> The option withQuietZones has no effect with this barcode.

# Zend_Barcode_Object_Upce

This barcode extends Zend_Barcode_Object_Upca (UPC-A), and inherits some of its capabilities; it also has a few particulars of its own. The first character of the text to encode is the system (0 or 1).

- Name: UPC-E (Universal Product Code)

- Allowed characters: '0123456789'

- Checksum: mandatory (modulo 10)

- Length: 8 characters (including checksum)

There are no particular options for this barcode.

> Note: If the number of characters is lower than 8, Zend_Barcode_Object_Upce will automatically prepend missing zeros to the barcode text.

> Note: If the first character of the text to encode is not 0 or 1, Zend_Barcode_Object_Upce will automatically replace it by 0.
> The option withQuietZones has no effect with this barcode.

Barcode creation using Zend_Barcode class | Zend_Barcode Programmer's Reference Guide | Zend_Barcode Renderers