Simpletags

Version 1.2

• Author: Dan Horrigan

DESCRIPTION

Simpletags is exactly what it sounds like...a simple way to use tags in your PHP application. This allows you to have tags that look like this:

{something:other}
{date format="m/d/Y"}

{blog:entries count="5"}
Stuff here
{/blog:entries}

INSTALLATION

1. Just include the Simpletags.php file into your app

CodeIgniter

1. Put Simpletags.php into your application/libraries folder
2. Load it like normal: @$this->load->library('simpletags');@ (or autoload it).

USAGE

You can send a config array to the constructor with the following options (these are the defaults):

array(
    'l_delim' => '{',
    'r_delim' => '{',
    'trigger' => '',
);

You can also set the delimiters and triggers via the following functions:

$simpletags = new Simpletags();
$simpletags->set_delimitiers('{', '}');
$simpletags->set_trigger('foo:');

To parse a string of text you simply call the parse() function. The parse function accepts 3 parameters:

1. $content - The content to parse
2. [optional] $data - a keyed array of data to replace tag vars with (more below)
3. [optional] $callback - A callback that will be called for each tag.

Normal Return

If no callback is specified then the function will return an array. Consider this is the content you sent:

Hello there.

{rest:get url="http://example.com/api" type="json"}
Stuff here
{/rest:get}

Bye.

Parse would return this:

Array
(
    [content] => Hello there.

marker_0k0dj3j4nJHDj22j

Bye.
    [tags] => Array
        (
            [0] => Array
                (
                    [full_tag] => {rest:get url="http://example.com/api" type="json"}
Stuff here
{/rest:get}
                    [attributes] => Array
                        (
                            [url] => http://example.com/api
                            [type] => json
                        )

                    [segments] => Array
                        (
                            [0] => rest
                            [1] => get
                        )

                    [content] => 
Stuff here

                    [marker] => marker_0k0dj3j4nJHDj22j
                )

        )

)

Using the Data Array

The data array is a keyed array who's contents will replace tags with the same name. Example:

{foo:bar}

Would be replaced with "Hello World" when the following data array is sent to the parse function:

$data['foo']['bar'] = "Hello World"

You can use tag pairs to loop through data as well:

Tag:

{books}
{title} by {author}<br />
{/books}

Data

$data = array(
    'books' => array(
        array(
            'title' => 'PHP for Dummies',
            'author' => 'John Doe'
        ),
        array(
            'title' => 'CodeIgniter for Dummies',
            'author' => 'Jane Doe'
        )
    )
);

Resulting Output

PHP for Dummies by John Doe
CodeIgniter for Dummies by Jane Doe

Callbacks

The callback must be in a form that is_callable() accepts (typically array(object, method)). The callbac function should take 1 parameter (an array).

The callback will be sent the tag information in the form of an array. Consider the following

{rest:get url="http://example.com/api" type="json"}
Stuff here
{/rest:get}

Would send the callback function the following array:

Array
(
    [full_tag] => {rest:get url="http://example.com/api" type="json"}
Stuff here
{/rest:get}
    [attributes] => Array
        (
            [url] => http://example.com/api
            [type] => json
        )

    [segments] => Array
        (
            [0] => rest
            [1] => get
        )

    [content] => 
Stuff here

    [marker] => marker_0k0dj3j4nJHDj22j
)

CodeIgniter Usage

You use it the same as above, except you would use the following:

$this->load->library('simpletags');
$content = $this->simpletags->parse($content, $data, array($this, 'parser_callback'));