Introduction to Zend\TagΒΆ

Zend\Tag is a component suite which provides a facility to work with taggable Items. As its base, it provides two classes to work with Tags, Zend\Tag\Item and Zend\Tag\ItemList. Additionally, it comes with the interface Zend\Tag\TaggableInterface, which allows you to use any of your models as a taggable item in conjunction with Zend\Tag.

Zend\Tag\Item is a basic taggable item implementation which comes with the essential functionality required to work with the Zend\Tag suite. A taggable item always consists of a title and a relative weight (e.g. number of occurrences). It also stores parameters which are used by the different sub-components of Zend\Tag.

To group multiple items together, Zend\Tag\ItemList exists as an array iterator and provides additional functionality to calculate absolute weight values based on the given relative weights of each item in it.

Using Zend\Tag

This example illustrates how to create a list of tags and spread absolute weight values on them.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
// Create the item list
$list = new Zend\Tag\ItemList();

// Assign tags to it
$list[] = new Zend\Tag\Item(array('title' => 'Code', 'weight' => 50));
$list[] = new Zend\Tag\Item(array('title' => 'Zend Framework', 'weight' => 1));
$list[] = new Zend\Tag\Item(array('title' => 'PHP', 'weight' => 5));

// Spread absolute values on the items
$list->spreadWeightValues(array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10));

// Output the items with their absolute values
foreach ($list as $item) {
    printf("%s: %d\n", $item->getTitle(), $item->getParam('weightValue'));
}

This will output the three items “Code”, “Zend Framework” and “PHP” with the absolute values 10, 1 and 2.

Code: 10
Zend Framework: 1
PHP: 2

Previous topic

Zend\Stdlib\Hydrator\Aggregate\AggregateHydrator

Next topic

Creating tag clouds with Zend\Tag\Cloud

This Page

Note: You need to stay logged into your GitHub account to contribute to the documentation.

Edit this document

Edit this document

The source code of this file is hosted on GitHub. Everyone can update and fix errors in this document with few clicks - no downloads needed.

  1. Login with your GitHub account.
  2. Go to Introduction to Zend\Tag on GitHub.
  3. Edit file contents using GitHub's text editor in your web browser
  4. Fill in the Commit message text box at the end of the page telling why you did the changes. Press Propose file change button next to it when done.
  5. On Send a pull request page you don't need to fill in text anymore. Just press Send pull request button.
  6. Your changes are now queued for review under project's Pull requests tab on GitHub.