user_guide_src/source/helpers/html_helper.rst - code-igniter-v3-giggi - Gitiles

 ###########
 HTML Helper
 ###########

 The HTML Helper file contains functions that assist in working with
 HTML.

 .. contents:: Page Contents

 Loading this Helper
 ===================

 This helper is loaded using the following code::

 	$this->load->helper('html');

 The following functions are available:

 br()
 ====

 .. php:function:: br($count = 1)

 	:param	int	$count: Number of times to repeat the tag
 	:returns:	string

 Generates line break tags (<br />) based on the number you submit.
 Example::

 	echo br(3);

 The above would produce: <br /><br /><br />

 heading()
 =========

 .. php:function:: heading($data = '', $h = '1', $attributes = '')

 	:param	string	$data: Content
 	:param	string	$h: Heading level
 	:param	array	$attributes: HTML attributes
 	:returns:	string

 Lets you create HTML heading tags. The first parameter will contain the
 data, the second the size of the heading. Example::

 	echo heading('Welcome!', 3);

 The above would produce: <h3>Welcome!</h3>

 Additionally, in order to add attributes to the heading tag such as HTML
 classes, ids or inline styles, a third parameter is available::

 	echo heading('Welcome!', 3, 'class="pink"')

 The above code produces: <h3 class="pink">Welcome!<<h3>

 img()
 =====

 .. php:function:: img($src = '', $index_page = FALSE, $attributes = '')

 	:param	string	$src: Image source data
 	:param	bool	$index_page: Whether to treat $src as a routed URI string
 	:param	array	$attributes: HTML attributes
 	:returns:	string

 Lets you create HTML <img /> tags. The first parameter contains the
 image source. Example::

 	echo img('images/picture.jpg'); // gives <img src="http://site.com/images/picture.jpg" />

 There is an optional second parameter that is a TRUE/FALSE value that
 specifics if the *src* should have the page specified by
 ``$config['index_page']`` added to the address it creates.
 Presumably, this would be if you were using a media controller::

 	echo img('images/picture.jpg', TRUE); // gives <img src="http://site.com/index.php/images/picture.jpg" alt="" />


 Additionally, an associative array can be passed to the ``img()`` function
 for complete control over all attributes and values. If an *alt* attribute
 is not provided, CodeIgniter will generate an empty string.

 Example::

 	$image_properties = array(
 		'src' 	=> 'images/picture.jpg',
 		'alt' 	=> 'Me, demonstrating how to eat 4 slices of pizza at one time',
 		'class' => 'post_images',
 		'width' => '200',
 		'height'=> '200',
 		'title' => 'That was quite a night',
 		'rel' 	=> 'lightbox'
 	);

 	img($image_properties);
 	// <img src="http://site.com/index.php/images/picture.jpg" alt="Me, demonstrating how to eat 4 slices of pizza at one time" class="post_images" width="200" height="200" title="That was quite a night" rel="lightbox" />


 link_tag()
 ==========

 .. php:function:: ling_tag($href = '', $rel = 'stylesheet', $type = 'text/css', $title = '', $media = '', $index_page = FALSE)

 	:param	string	$href: What are we linking to
 	:param	string	$rel: Relation type
 	:param	string	$type: Type of the related document
 	:param	string	$title: Link title
 	:param	string	$media: Media type
 	:param	bool	$index_page: Whether to treat $src as a routed URI string
 	:returns:	string

 Lets you create HTML <link /> tags. This is useful for stylesheet links,
 as well as other links. The parameters are *href*, with optional *rel*,
 *type*, *title*, *media* and *index_page*.

 *index_page* is a boolean value that specifies if the *href* should have
 the page specified by ``$config['index_page']`` added to the address it creates.

 Example::

 	echo link_tag('css/mystyles.css');
 	// gives <link href="http://site.com/css/mystyles.css" rel="stylesheet" type="text/css" />


 Further examples::

 	echo link_tag('favicon.ico', 'shortcut icon', 'image/ico');
 	// <link href="http://site.com/favicon.ico" rel="shortcut icon" type="image/ico" />

 	echo link_tag('feed', 'alternate', 'application/rss+xml', 'My RSS Feed');
 	// <link href="http://site.com/feed" rel="alternate" type="application/rss+xml" title="My RSS Feed" />

 Additionally, an associative array can be passed to the ``link()`` function
 for complete control over all attributes and values::

 	$link = array(
 		'href'	=> 'css/printer.css',
 		'rel'	=> 'stylesheet',
 		'type'	=> 'text/css',
 		'media'	=> 'print'
 	);

 	echo link_tag($link);
 	// <link href="http://site.com/css/printer.css" rel="stylesheet" type="text/css" media="print" />

 nbs()
 =====

 .. php:function:: nbs($num = 1)

 	:param	int	$num: Number of space entities to produce
 	:returns:	string

 Generates non-breaking spaces (&nbsp;) based on the number you submit.
 Example::

 	echo nbs(3);

 The above would produce::

 	&nbsp;&nbsp;&nbsp;

 ul() and ol()
 =============

 .. php:function:: ul($list, $attributes = '')

 	:param	array	$list: List entries
 	:param	array	$attributes: HTML attributes
 	:returns:	string

 Permits you to generate ordered or unordered HTML lists from simple or
 multi-dimensional arrays. Example::

 	$list = array(
 		'red',
 		'blue',
 		'green',
 		'yellow'
 	);

 	$attributes = array(
 		'class'	=> 'boldlist',
 		'id'	=> 'mylist'
 	);

 	echo ul($list, $attributes);

 The above code will produce this::

 	 <ul class="boldlist" id="mylist">
 		<li>red</li>
 		<li>blue</li>
 		<li>green</li>
 		<li>yellow</li>
 	</ul>

 Here is a more complex example, using a multi-dimensional array::

 	$attributes = array(
 		'class'	=> 'boldlist',
 		'id'	=> 'mylist'
 	);

 	$list = array(
 		'colors'  => array(
 			'red',
 			'blue',
 			'green'
 		),
 		'shapes'  => array(
 			'round',
 			'square',
 			'circles' => array(
 				'ellipse',
 				'oval',
 				'sphere'
 			)
 		),
 		'moods'  => array(
 			'happy',
 			'upset' => array(
 				'defeated' => array(
 					'dejected',
 					'disheartened',
 					'depressed'
 				),
 				'annoyed',
 				'cross',
 				'angry'
 			)
 		)
 	);

 	echo ul($list, $attributes);

 The above code will produce this::

 	<ul class="boldlist" id="mylist">
 		<li>colors
 			<ul>
 				<li>red</li>
 				<li>blue</li>
 				<li>green</li>
 			</ul>
 		</li>
 		<li>shapes
 			<ul>
 				<li>round</li>
 				<li>suare</li>
 				<li>circles
 					<ul>
 						<li>elipse</li>
 						<li>oval</li>
 						<li>sphere</li>
 					</ul>
 				</li>
 			</ul>
 		</li>
 		<li>moods
 			<ul>
 				<li>happy</li>
 				<li>upset
 					<ul>
 						<li>defeated
 							<ul>
 								<li>dejected</li>
 								<li>disheartened</li>
 								<li>depressed</li>
 							</ul>
 						</li>
 						<li>annoyed</li>
 						<li>cross</li>
 						<li>angry</li>
 					</ul>
 				</li>
 			</ul>
 		</li>
 	</ul>

 .. php:function:: ol($list, $attributes = '')

 	:param	array	$list: List entries
 	:param	array	$attributes: HTML attributes
 	:returns:	string

 Identical to :php:func:`ul()`, only it produces the <ol> tag for
 ordered lists instead of <ul>.

 meta()
 ======

 .. php:function:: meta($name = '', $content = '', $type = 'name', $newline = "\n")

 	:param	string	$name: Meta name
 	:param	string	$content: Meta content
 	:param	string	$type: Meta type
 	:param	string	$newline: Newline character
 	:returns:	string

 Helps you generate meta tags. You can pass strings to the function, or
 simple arrays, or multidimensional ones.

 Examples::

 	echo meta('description', 'My Great site');
 	// Generates:  <meta name="description" content="My Great Site" />

 	echo meta('Content-type', 'text/html; charset=utf-8', 'equiv');
 	// Note the third parameter.  Can be "equiv" or "name"
 	// Generates:  <meta http-equiv="Content-type" content="text/html; charset=utf-8" />

 	echo meta(array('name' => 'robots', 'content' => 'no-cache'));
 	// Generates:  <meta name="robots" content="no-cache" />

 	$meta = array(
 		array(
 			'name' => 'robots',
 			'content' => 'no-cache'
 		),
 		array(
 			'name' => 'description',
 			'content' => 'My Great Site'
 		),
 		array(
 			'name' => 'keywords',
 			'content' => 'love, passion, intrigue, deception'
 		),
 		array(
 			'name' => 'robots',
 			'content' => 'no-cache'
 		),
 		array(
 			'name' => 'Content-type',
 			'content' => 'text/html; charset=utf-8', 'type' => 'equiv'
 		)
 	);

 	echo meta($meta);
 	// Generates:
 	// <meta name="robots" content="no-cache" />
 	// <meta name="description" content="My Great Site" />
 	// <meta name="keywords" content="love, passion, intrigue, deception" />
 	// <meta name="robots" content="no-cache" />
 	// <meta http-equiv="Content-type" content="text/html; charset=utf-8" />

 doctype()
 =========

 .. php:function:: doctype($type = 'xhtml1-strict')

 	:param	string	$type: Doctype name

 Helps you generate document type declarations, or DTD's. XHTML 1.0
 Strict is used by default, but many doctypes are available.

 Example::

 	echo doctype(); // <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

 	echo doctype('html4-trans'); // <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

 The following is a list of doctype choices. These are configurable, and
 pulled from application/config/doctypes.php

 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | Doctype                       | Option                       | Result                                                                                                                                           |
 +===============================+==============================+==================================================================================================================================================+
 | XHTML 1.1                     | doctype('xhtml11')           | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">                                                |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | XHTML 1.0 Strict              | doctype('xhtml1-strict')     | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">                                    |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | XHTML 1.0 Transitional        | doctype('xhtml1-trans')      | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">                        |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | XHTML 1.0 Frameset            | doctype('xhtml1-frame')      | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">                                |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | XHTML Basic 1.1               | doctype('xhtml-basic11')     | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.1//EN" "http://www.w3.org/TR/xhtml-basic/xhtml-basic11.dtd">                                    |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | HTML 5                        | doctype('html5')             | <!DOCTYPE html>                                                                                                                                  |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | HTML 4 Strict                 | doctype('html4-strict')      | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">                                                       |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | HTML 4 Transitional           | doctype('html4-trans')       | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">                                           |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | HTML 4 Frameset               | doctype('html4-frame')       | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">                                            |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | MathML 1.01                   | doctype('mathml1')	       | <!DOCTYPE math SYSTEM "http://www.w3.org/Math/DTD/mathml1/mathml.dtd">                                                                           |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | MathML 2.0                    | doctype('mathml2')           | <!DOCTYPE math PUBLIC "-//W3C//DTD MathML 2.0//EN" "http://www.w3.org/Math/DTD/mathml2/mathml2.dtd">                                             |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | SVG 1.0                       | doctype('svg10')             | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">                                       |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | SVG 1.1 Full                  | doctype('svg11')             | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">                                               |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | SVG 1.1 Basic                 | doctype('svg11-basic')       | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Basic//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-basic.dtd">                                   |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | SVG 1.1 Tiny                  | doctype('svg11-tiny')        | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Tiny//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-tiny.dtd">                                     |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | XHTML+MathML+SVG (XHTML host) | doctype('xhtml-math-svg-xh') | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">    |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | XHTML+MathML+SVG (SVG host)   | doctype('xhtml-math-svg-sh') | <!DOCTYPE svg:svg PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"> |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | XHTML+RDFa 1.0                | doctype('xhtml-rdfa-1')      | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">                                          |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | XHTML+RDFa 1.1                | doctype('xhtml-rdfa-2')      | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.1//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-2.dtd">                                          |
 +-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	###########
	HTML Helper
	###########

	The HTML Helper file contains functions that assist in working with
	HTML.

	.. contents:: Page Contents

	Loading this Helper
	===================

	This helper is loaded using the following code::

	$this->load->helper('html');

	The following functions are available:

	br()
	====

	.. php:function:: br($count = 1)

	:param int $count: Number of times to repeat the tag
	:returns: string

	Generates line break tags (<br />) based on the number you submit.
	Example::

	echo br(3);

	The above would produce: <br /><br /><br />

	heading()
	=========

	.. php:function:: heading($data = '', $h = '1', $attributes = '')

	:param string $data: Content
	:param string $h: Heading level
	:param array $attributes: HTML attributes
	:returns: string

	Lets you create HTML heading tags. The first parameter will contain the
	data, the second the size of the heading. Example::

	echo heading('Welcome!', 3);

	The above would produce: <h3>Welcome!</h3>

	Additionally, in order to add attributes to the heading tag such as HTML
	classes, ids or inline styles, a third parameter is available::

	echo heading('Welcome!', 3, 'class="pink"')

	The above code produces: <h3 class="pink">Welcome!<<h3>

	img()
	=====

	.. php:function:: img($src = '', $index_page = FALSE, $attributes = '')

	:param string $src: Image source data
	:param bool $index_page: Whether to treat $src as a routed URI string
	:param array $attributes: HTML attributes
	:returns: string

	Lets you create HTML <img /> tags. The first parameter contains the
	image source. Example::

	echo img('images/picture.jpg'); // gives <img src="http://site.com/images/picture.jpg" />

	There is an optional second parameter that is a TRUE/FALSE value that
	specifics if the src should have the page specified by
	``$config['index_page']`` added to the address it creates.
	Presumably, this would be if you were using a media controller::

	echo img('images/picture.jpg', TRUE); // gives <img src="http://site.com/index.php/images/picture.jpg" alt="" />


	Additionally, an associative array can be passed to the ``img()`` function
	for complete control over all attributes and values. If an alt attribute
	is not provided, CodeIgniter will generate an empty string.

	Example::

	$image_properties = array(
	'src' => 'images/picture.jpg',
	'alt' => 'Me, demonstrating how to eat 4 slices of pizza at one time',
	'class' => 'post_images',
	'width' => '200',
	'height'=> '200',
	'title' => 'That was quite a night',
	'rel' => 'lightbox'
	);

	img($image_properties);
	// <img src="http://site.com/index.php/images/picture.jpg" alt="Me, demonstrating how to eat 4 slices of pizza at one time" class="post_images" width="200" height="200" title="That was quite a night" rel="lightbox" />


	link_tag()
	==========

	.. php:function:: ling_tag($href = '', $rel = 'stylesheet', $type = 'text/css', $title = '', $media = '', $index_page = FALSE)

	:param string $href: What are we linking to
	:param string $rel: Relation type
	:param string $type: Type of the related document
	:param string $title: Link title
	:param string $media: Media type
	:param bool $index_page: Whether to treat $src as a routed URI string
	:returns: string

	Lets you create HTML <link /> tags. This is useful for stylesheet links,
	as well as other links. The parameters are href, with optional rel,
	type, title, media and index_page.

	index_page is a boolean value that specifies if the href should have
	the page specified by ``$config['index_page']`` added to the address it creates.

	Example::

	echo link_tag('css/mystyles.css');
	// gives <link href="http://site.com/css/mystyles.css" rel="stylesheet" type="text/css" />


	Further examples::

	echo link_tag('favicon.ico', 'shortcut icon', 'image/ico');
	// <link href="http://site.com/favicon.ico" rel="shortcut icon" type="image/ico" />

	echo link_tag('feed', 'alternate', 'application/rss+xml', 'My RSS Feed');
	// <link href="http://site.com/feed" rel="alternate" type="application/rss+xml" title="My RSS Feed" />

	Additionally, an associative array can be passed to the ``link()`` function
	for complete control over all attributes and values::

	$link = array(
	'href' => 'css/printer.css',
	'rel' => 'stylesheet',
	'type' => 'text/css',
	'media' => 'print'
	);

	echo link_tag($link);
	// <link href="http://site.com/css/printer.css" rel="stylesheet" type="text/css" media="print" />

	nbs()
	=====

	.. php:function:: nbs($num = 1)

	:param int $num: Number of space entities to produce
	:returns: string

	Generates non-breaking spaces ( ) based on the number you submit.
	Example::

	echo nbs(3);

	The above would produce::



	ul() and ol()
	=============

	.. php:function:: ul($list, $attributes = '')

	:param array $list: List entries
	:param array $attributes: HTML attributes
	:returns: string

	Permits you to generate ordered or unordered HTML lists from simple or
	multi-dimensional arrays. Example::

	$list = array(
	'red',
	'blue',
	'green',
	'yellow'
	);

	$attributes = array(
	'class' => 'boldlist',
	'id' => 'mylist'
	);

	echo ul($list, $attributes);

	The above code will produce this::

	<ul class="boldlist" id="mylist">
	<li>red</li>
	<li>blue</li>
	<li>green</li>
	<li>yellow</li>
	</ul>

	Here is a more complex example, using a multi-dimensional array::

	$attributes = array(
	'class' => 'boldlist',
	'id' => 'mylist'
	);

	$list = array(
	'colors' => array(
	'red',
	'blue',
	'green'
	),
	'shapes' => array(
	'round',
	'square',
	'circles' => array(
	'ellipse',
	'oval',
	'sphere'
	)
	),
	'moods' => array(
	'happy',
	'upset' => array(
	'defeated' => array(
	'dejected',
	'disheartened',
	'depressed'
	),
	'annoyed',
	'cross',
	'angry'
	)
	)
	);

	echo ul($list, $attributes);

	The above code will produce this::

	<ul class="boldlist" id="mylist">
	<li>colors
	<ul>
	<li>red</li>
	<li>blue</li>
	<li>green</li>
	</ul>
	</li>
	<li>shapes
	<ul>
	<li>round</li>
	<li>suare</li>
	<li>circles
	<ul>
	<li>elipse</li>
	<li>oval</li>
	<li>sphere</li>
	</ul>
	</li>
	</ul>
	</li>
	<li>moods
	<ul>
	<li>happy</li>
	<li>upset
	<ul>
	<li>defeated
	<ul>
	<li>dejected</li>
	<li>disheartened</li>
	<li>depressed</li>
	</ul>
	</li>
	<li>annoyed</li>
	<li>cross</li>
	<li>angry</li>
	</ul>
	</li>
	</ul>
	</li>
	</ul>

	.. php:function:: ol($list, $attributes = '')

	:param array $list: List entries
	:param array $attributes: HTML attributes
	:returns: string

	Identical to :php:func:`ul()`, only it produces the <ol> tag for
	ordered lists instead of <ul>.

	meta()
	======

	.. php:function:: meta($name = '', $content = '', $type = 'name', $newline = "\n")

	:param string $name: Meta name
	:param string $content: Meta content
	:param string $type: Meta type
	:param string $newline: Newline character
	:returns: string

	Helps you generate meta tags. You can pass strings to the function, or
	simple arrays, or multidimensional ones.

	Examples::

	echo meta('description', 'My Great site');
	// Generates: <meta name="description" content="My Great Site" />

	echo meta('Content-type', 'text/html; charset=utf-8', 'equiv');
	// Note the third parameter. Can be "equiv" or "name"
	// Generates: <meta http-equiv="Content-type" content="text/html; charset=utf-8" />

	echo meta(array('name' => 'robots', 'content' => 'no-cache'));
	// Generates: <meta name="robots" content="no-cache" />

	$meta = array(
	array(
	'name' => 'robots',
	'content' => 'no-cache'
	),
	array(
	'name' => 'description',
	'content' => 'My Great Site'
	),
	array(
	'name' => 'keywords',
	'content' => 'love, passion, intrigue, deception'
	),
	array(
	'name' => 'robots',
	'content' => 'no-cache'
	),
	array(
	'name' => 'Content-type',
	'content' => 'text/html; charset=utf-8', 'type' => 'equiv'
	)
	);

	echo meta($meta);
	// Generates:
	// <meta name="robots" content="no-cache" />
	// <meta name="description" content="My Great Site" />
	// <meta name="keywords" content="love, passion, intrigue, deception" />
	// <meta name="robots" content="no-cache" />
	// <meta http-equiv="Content-type" content="text/html; charset=utf-8" />

	doctype()
	=========

	.. php:function:: doctype($type = 'xhtml1-strict')

	:param string $type: Doctype name

	Helps you generate document type declarations, or DTD's. XHTML 1.0
	Strict is used by default, but many doctypes are available.

	Example::

	echo doctype(); // <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

	echo doctype('html4-trans'); // <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

	The following is a list of doctype choices. These are configurable, and
	pulled from application/config/doctypes.php

	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| Doctype \| Option \| Result \|
	+===============================+==============================+==================================================================================================================================================+
	\| XHTML 1.1 \| doctype('xhtml11') \| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| XHTML 1.0 Strict \| doctype('xhtml1-strict') \| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| XHTML 1.0 Transitional \| doctype('xhtml1-trans') \| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| XHTML 1.0 Frameset \| doctype('xhtml1-frame') \| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| XHTML Basic 1.1 \| doctype('xhtml-basic11') \| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.1//EN" "http://www.w3.org/TR/xhtml-basic/xhtml-basic11.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| HTML 5 \| doctype('html5') \| <!DOCTYPE html> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| HTML 4 Strict \| doctype('html4-strict') \| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| HTML 4 Transitional \| doctype('html4-trans') \| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| HTML 4 Frameset \| doctype('html4-frame') \| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| MathML 1.01 \| doctype('mathml1') \| <!DOCTYPE math SYSTEM "http://www.w3.org/Math/DTD/mathml1/mathml.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| MathML 2.0 \| doctype('mathml2') \| <!DOCTYPE math PUBLIC "-//W3C//DTD MathML 2.0//EN" "http://www.w3.org/Math/DTD/mathml2/mathml2.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| SVG 1.0 \| doctype('svg10') \| <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| SVG 1.1 Full \| doctype('svg11') \| <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| SVG 1.1 Basic \| doctype('svg11-basic') \| <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Basic//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-basic.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| SVG 1.1 Tiny \| doctype('svg11-tiny') \| <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Tiny//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-tiny.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| XHTML+MathML+SVG (XHTML host) \| doctype('xhtml-math-svg-xh') \| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| XHTML+MathML+SVG (SVG host) \| doctype('xhtml-math-svg-sh') \| <!DOCTYPE svg:svg PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| XHTML+RDFa 1.0 \| doctype('xhtml-rdfa-1') \| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
	\| XHTML+RDFa 1.1 \| doctype('xhtml-rdfa-2') \| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.1//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-2.dtd"> \|
	+-------------------------------+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+