390 lines
24 KiB
HTML
390 lines
24 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>HTML Helper : CodeIgniter User Guide</title>
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<style type='text/css' media='all'>@import url('../userguide.css');</style>
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<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
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<script type="text/javascript" src="../nav/nav.js"></script>
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<script type="text/javascript" src="../nav/prototype.lite.js"></script>
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<script type="text/javascript" src="../nav/moo.fx.js"></script>
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<script type="text/javascript" src="../nav/user_guide_menu.js"></script>
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<meta http-equiv='expires' content='-1' />
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<meta http-equiv= 'pragma' content='no-cache' />
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<meta name='robots' content='all' />
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<meta name='author' content='ExpressionEngine Dev Team' />
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<meta name='description' content='CodeIgniter User Guide' />
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</head>
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<body>
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<!-- START NAVIGATION -->
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<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
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<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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<div id="masthead">
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td><h1>CodeIgniter User Guide Version 2.1.3</h1></td>
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<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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</tr>
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</table>
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</div>
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<!-- END NAVIGATION -->
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<!-- START BREADCRUMB -->
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td id="breadcrumb">
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<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
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<a href="../index.html">User Guide Home</a> ›
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HTML Helper
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</td>
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<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td>
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</tr>
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</table>
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<!-- END BREADCRUMB -->
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<br clear="all" />
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<!-- START CONTENT -->
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<div id="content">
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<h1>HTML Helper</h1>
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<p>The HTML Helper file contains functions that assist in working with HTML.</p>
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<ul>
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<li><a href="#br">br()</a></li>
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<li><a href="#heading">heading()</a></li>
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<li><a href="#img">img()</a></li>
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<li><a href="#link_tag">link_tag()</a></li>
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<li><a href="#nbs">nbs()</a></li>
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<li><a href="#ol_and_ul">ol() and ul()</a></li>
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<li><a href="#meta">meta()</a></li>
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<li><a href="#doctype">doctype()</a></li>
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</ul>
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<h2>Loading this Helper</h2>
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<p>This helper is loaded using the following code:</p>
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<code>$this->load->helper('html');</code>
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<p>The following functions are available:</p>
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<h2><a name="br"></a>br()</h2>
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<p>Generates line break tags (<br />) based on the number you submit. Example:</p>
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<code>echo br(3);</code>
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<p>The above would produce: <br /><br /><br /></p>
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<h2><a name="heading"></a>heading()</h2>
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<p>Lets you create HTML <h1> tags. The first parameter will contain the data, the
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second the size of the heading. Example:</p>
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<code>echo heading('Welcome!', 3);</code>
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<p>The above would produce: <h3>Welcome!</h3></p>
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<p>Additionally, in order to add attributes to the heading tag such as HTML classes, ids or inline styles, a third parameter is available.</p>
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<code>echo heading('Welcome!', 3, 'class="pink"')</code>
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<p>The above code produces: <h3 class="pink">Welcome!<<h3></p>
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<h2><a name="img"></a>img()</h2>
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<p>Lets you create HTML <img /> tags. The first parameter contains the image source. Example:</p>
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<code>echo img('images/picture.jpg');<br />
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// gives <img src="http://site.com/images/picture.jpg" /></code>
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<p>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.</p>
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<p><code>echo img('images/picture.jpg', TRUE);<br />
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// gives <img src="http://site.com/index.php/images/picture.jpg" alt="" /></code></p>
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<p>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.</p>
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<p><code> $image_properties = array(<br />
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'src' => 'images/picture.jpg',<br />
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'alt' => 'Me, demonstrating how to eat 4 slices of pizza at one time',<br />
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'class' => 'post_images',<br />
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'width' => '200',<br />
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'height' => '200',<br />
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'title' => 'That was quite a night',<br />
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'rel' => 'lightbox',<br />
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);<br />
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<br />
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img($image_properties);<br />
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// <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" /></code></p>
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<h2><a name="link_tag"></a>link_tag()</h2>
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<p>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 TRUE/FALSE value that specifics if the href should have the page specified by $config['index_page'] added to the address it creates.<code>
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echo link_tag('css/mystyles.css');<br />
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// gives <link href="http://site.com/css/mystyles.css" rel="stylesheet" type="text/css" /></code></p>
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<p>Further examples:</p>
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<code>
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echo link_tag('favicon.ico', 'shortcut icon', 'image/ico');<br />
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// <link href="http://site.com/favicon.ico" rel="shortcut icon" type="image/ico" />
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<br />
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<br />
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echo link_tag('feed', 'alternate', 'application/rss+xml', 'My RSS Feed');<br />
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// <link href="http://site.com/feed" rel="alternate" type="application/rss+xml" title="My RSS Feed" /> </code>
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<p>Additionally, an associative array can be passed to the link() function for complete control over all attributes and values.</p>
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<p><code>
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$link = array(<br />
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'href' => 'css/printer.css',<br />
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'rel' => 'stylesheet',<br />
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'type' => 'text/css',<br />
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'media' => 'print'<br />
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);<br />
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<br />
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echo link_tag($link);<br />
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// <link href="http://site.com/css/printer.css" rel="stylesheet" type="text/css" media="print" /></code></p>
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<h2><a name="nbs"></a>nbs()</h2>
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<p>Generates non-breaking spaces (&nbsp;) based on the number you submit. Example:</p>
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<code>echo nbs(3);</code>
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<p>The above would produce: &nbsp;&nbsp;&nbsp;</p>
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<h2><a name="ol_and_ul"></a>ol() and ul()</h2>
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<p>Permits you to generate ordered or unordered HTML lists from simple or multi-dimensional arrays. Example:</p>
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<code>
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$this->load->helper('html');<br />
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<br />
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$list = array(<br />
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'red', <br />
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'blue', <br />
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'green',<br />
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'yellow'<br />
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);<br />
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<br />
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$attributes = array(<br />
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'class' => 'boldlist',<br />
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'id' => 'mylist'<br />
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);<br />
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<br />
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echo ul($list, $attributes);<br />
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</code>
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<p>The above code will produce this:</p>
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<code>
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<ul class="boldlist" id="mylist"><br />
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<li>red</li><br />
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<li>blue</li><br />
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<li>green</li><br />
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<li>yellow</li><br />
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</ul>
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</code>
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<p>Here is a more complex example, using a multi-dimensional array:</p>
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<code>
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$this->load->helper('html');<br />
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<br />
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$attributes = array(<br />
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'class' => 'boldlist',<br />
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'id' => 'mylist'<br />
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);<br />
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<br />
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$list = array(<br />
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'colors' => array(<br />
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'red',<br />
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'blue',<br />
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'green'<br />
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),<br />
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'shapes' => array(<br />
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'round', <br />
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'square',<br />
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'circles' => array(<br />
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'ellipse', <br />
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'oval', <br />
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'sphere'<br />
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)<br />
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),<br />
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'moods' => array(<br />
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'happy', <br />
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'upset' => array(<br />
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'defeated' => array(<br />
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'dejected',<br />
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'disheartened',<br />
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'depressed'<br />
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),<br />
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'annoyed',<br />
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'cross',<br />
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'angry'<br />
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)<br />
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)<br />
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);<br />
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<br />
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<br />
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echo ul($list, $attributes);</code>
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<p>The above code will produce this:</p>
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<code>
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<ul class="boldlist" id="mylist"><br />
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<li>colors<br />
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<ul><br />
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<li>red</li><br />
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<li>blue</li><br />
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<li>green</li><br />
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</ul><br />
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</li><br />
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<li>shapes<br />
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<ul><br />
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<li>round</li><br />
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<li>suare</li><br />
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<li>circles<br />
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<ul><br />
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<li>elipse</li><br />
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<li>oval</li><br />
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<li>sphere</li><br />
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</ul><br />
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</li><br />
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</ul><br />
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</li><br />
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<li>moods<br />
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<ul><br />
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<li>happy</li><br />
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<li>upset<br />
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<ul><br />
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<li>defeated<br />
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<ul><br />
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<li>dejected</li><br />
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<li>disheartened</li><br />
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<li>depressed</li><br />
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</ul><br />
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</li><br />
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<li>annoyed</li><br />
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<li>cross</li><br />
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<li>angry</li><br />
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</ul><br />
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</li><br />
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</ul><br />
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</li><br />
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</ul>
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</code>
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<h2><a name="meta"></a>meta()</h2>
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<p>Helps you generate meta tags. You can pass strings to the function, or simple arrays, or multidimensional ones. Examples:</p>
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<code>
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echo meta('description', 'My Great site');<br />
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// Generates: <meta name="description" content="My Great Site" /><br />
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<br /><br />
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echo meta('Content-type', 'text/html; charset=utf-8', 'equiv'); // Note the third parameter. Can be "equiv" or "name"<br />
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// Generates: <meta http-equiv="Content-type" content="text/html; charset=utf-8" /><br />
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<br /><br />
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echo meta(array('name' => 'robots', 'content' => 'no-cache'));<br />
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// Generates: <meta name="robots" content="no-cache" /><br />
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<br /><br />
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$meta = array(<br />
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array('name' => 'robots', 'content' => 'no-cache'),<br />
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array('name' => 'description', 'content' => 'My Great Site'),<br />
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array('name' => 'keywords', 'content' => 'love, passion, intrigue, deception'),<br />
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array('name' => 'robots', 'content' => 'no-cache'),<br />
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array('name' => 'Content-type', 'content' => 'text/html; charset=utf-8', 'type' => 'equiv')<br />
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);<br />
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<br />
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echo meta($meta);
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<br />
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// Generates: <br />
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// <meta name="robots" content="no-cache" /><br />
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// <meta name="description" content="My Great Site" /><br />
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// <meta name="keywords" content="love, passion, intrigue, deception" /><br />
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// <meta name="robots" content="no-cache" /><br />
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// <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
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</code>
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<h2><a name="doctype"></a>doctype()</h2>
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<p>Helps you generate document type declarations, or DTD's. XHTML 1.0 Strict is used by default, but many doctypes are available.</p>
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<code>
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echo doctype();<br />
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// <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><br />
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<br />
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echo doctype('html4-trans');<br />
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// <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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</code>
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<p>The following is a list of doctype choices. These are configurable, and pulled from <samp>application/config/doctypes.php</samp></p>
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<table cellpadding="0" cellspacing="1" border="0" style="width:100%" class="tableborder">
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<tr>
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<th>Doctype</th>
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<th>Option</th>
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<th>Result</th>
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</tr>
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<tr>
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<td class="td">XHTML 1.1</td>
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<td class="td">doctype('xhtml11')</td>
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<td class="td"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"></td>
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</tr>
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<tr>
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<td class="td">XHTML 1.0 Strict</td>
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<td class="td">doctype('xhtml1-strict')</td>
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<td class="td"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"></td>
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</tr>
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<tr>
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<td class="td">XHTML 1.0 Transitional</td>
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<td class="td">doctype('xhtml1-trans')</td>
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<td class="td"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"></td>
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</tr>
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<tr>
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<td class="td">XHTML 1.0 Frameset</td>
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<td class="td">doctype('xhtml1-frame')</td>
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<td class="td"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"></td>
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</tr>
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<tr>
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<td class="td">HTML 5</td>
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<td class="td">doctype('html5')</td>
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<td class="td"><!DOCTYPE html></td>
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</tr>
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<tr>
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<td class="td">HTML 4 Strict</td>
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<td class="td">doctype('html4-strict')</td>
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<td class="td"><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"></td>
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</tr>
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<tr>
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<td class="td">HTML 4 Transitional</td>
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<td class="td">doctype('html4-trans')</td>
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<td class="td"><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"></td>
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</tr>
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<tr>
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<td class="td">HTML 4 Frameset</td>
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<td class="td">doctype('html4-frame')</td>
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<td class="td"><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd"></td>
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</tr>
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</table>
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</div>
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<!-- END CONTENT -->
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<div id="footer">
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<p>
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Previous Topic: <a href="form_helper.html">Form Helper</a>
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·
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<a href="#top">Top of Page</a> ·
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<a href="../index.html">User Guide Home</a> ·
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Next Topic: <a href="path_helper.html"> Path Helper</a></p>
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<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2012 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
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</div>
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</body>
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</html> |