<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>HTML Helper : CodeIgniter User Guide</title> <style type='text/css' media='all'>@import url('../userguide.css');</style> <link rel='stylesheet' type='text/css' media='all' href='../userguide.css' /> <script type="text/javascript" src="../nav/nav.js"></script> <script type="text/javascript" src="../nav/prototype.lite.js"></script> <script type="text/javascript" src="../nav/moo.fx.js"></script> <script type="text/javascript" src="../nav/user_guide_menu.js"></script> <meta http-equiv='expires' content='-1' /> <meta http-equiv= 'pragma' content='no-cache' /> <meta name='robots' content='all' /> <meta name='author' content='ExpressionEngine Dev Team' /> <meta name='description' content='CodeIgniter User Guide' /> </head> <body> <!-- START NAVIGATION --> <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div> <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> <div id="masthead"> <table cellpadding="0" cellspacing="0" border="0" style="width:100%"> <tr> <td><h1>CodeIgniter User Guide Version 2.1.0</h1></td> <td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td> </tr> </table> </div> <!-- END NAVIGATION --> <!-- START BREADCRUMB --> <table cellpadding="0" cellspacing="0" border="0" style="width:100%"> <tr> <td id="breadcrumb"> <a href="http://codeigniter.com/">CodeIgniter Home</a> › <a href="../index.html">User Guide Home</a> › HTML Helper </td> <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> </tr> </table> <!-- END BREADCRUMB --> <br clear="all" /> <!-- START CONTENT --> <div id="content"> <h1>HTML Helper</h1> <p>The HTML Helper file contains functions that assist in working with HTML.</p> <ul> <li><a href="#br">br()</a></li> <li><a href="#heading">heading()</a></li> <li><a href="#img">img()</a></li> <li><a href="#link_tag">link_tag()</a></li> <li><a href="#nbs">nbs()</a></li> <li><a href="#ol_and_ul">ol() and ul()</a></li> <li><a href="#meta">meta()</a></li> <li><a href="#doctype">doctype()</a></li> </ul> <h2>Loading this Helper</h2> <p>This helper is loaded using the following code:</p> <code>$this->load->helper('html');</code> <p>The following functions are available:</p> <h2><a name="br"></a>br()</h2> <p>Generates line break tags (<br />) based on the number you submit. Example:</p> <code>echo br(3);</code> <p>The above would produce: <br /><br /><br /></p> <h2><a name="heading"></a>heading()</h2> <p>Lets you create HTML <h1> tags. The first parameter will contain the data, the second the size of the heading. Example:</p> <code>echo heading('Welcome!', 3);</code> <p>The above would produce: <h3>Welcome!</h3></p> <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> <code>echo heading('Welcome!', 3, 'class="pink"')</code> <p>The above code produces: <h3 class="pink">Welcome!<<h3></p> <h2><a name="img"></a>img()</h2> <p>Lets you create HTML <img /> tags. The first parameter contains the image source. Example:</p> <code>echo img('images/picture.jpg');<br /> // gives <img src="http://site.com/images/picture.jpg" /></code> <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> <p><code>echo img('images/picture.jpg', TRUE);<br /> // gives <img src="http://site.com/index.php/images/picture.jpg" alt="" /></code></p> <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> <p><code> $image_properties = array(<br /> 'src' => 'images/picture.jpg',<br /> 'alt' => 'Me, demonstrating how to eat 4 slices of pizza at one time',<br /> 'class' => 'post_images',<br /> 'width' => '200',<br /> 'height' => '200',<br /> 'title' => 'That was quite a night',<br /> 'rel' => 'lightbox',<br /> );<br /> <br /> img($image_properties);<br /> // <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> <h2><a name="link_tag"></a>link_tag()</h2> <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> echo link_tag('css/mystyles.css');<br /> // gives <link href="http://site.com/css/mystyles.css" rel="stylesheet" type="text/css" /></code></p> <p>Further examples:</p> <code> echo link_tag('favicon.ico', 'shortcut icon', 'image/ico');<br /> // <link href="http://site.com/favicon.ico" rel="shortcut icon" type="image/ico" /> <br /> <br /> echo link_tag('feed', 'alternate', 'application/rss+xml', 'My RSS Feed');<br /> // <link href="http://site.com/feed" rel="alternate" type="application/rss+xml" title="My RSS Feed" /> </code> <p>Additionally, an associative array can be passed to the link() function for complete control over all attributes and values.</p> <p><code> $link = array(<br /> 'href' => 'css/printer.css',<br /> 'rel' => 'stylesheet',<br /> 'type' => 'text/css',<br /> 'media' => 'print'<br /> );<br /> <br /> echo link_tag($link);<br /> // <link href="http://site.com/css/printer.css" rel="stylesheet" type="text/css" media="print" /></code></p> <h2><a name="nbs"></a>nbs()</h2> <p>Generates non-breaking spaces (&nbsp;) based on the number you submit. Example:</p> <code>echo nbs(3);</code> <p>The above would produce: &nbsp;&nbsp;&nbsp;</p> <h2><a name="ol_and_ul"></a>ol() and ul()</h2> <p>Permits you to generate ordered or unordered HTML lists from simple or multi-dimensional arrays. Example:</p> <code> $this->load->helper('html');<br /> <br /> $list = array(<br /> 'red', <br /> 'blue', <br /> 'green',<br /> 'yellow'<br /> );<br /> <br /> $attributes = array(<br /> 'class' => 'boldlist',<br /> 'id' => 'mylist'<br /> );<br /> <br /> echo ul($list, $attributes);<br /> </code> <p>The above code will produce this:</p> <code> <ul class="boldlist" id="mylist"><br /> <li>red</li><br /> <li>blue</li><br /> <li>green</li><br /> <li>yellow</li><br /> </ul> </code> <p>Here is a more complex example, using a multi-dimensional array:</p> <code> $this->load->helper('html');<br /> <br /> $attributes = array(<br /> 'class' => 'boldlist',<br /> 'id' => 'mylist'<br /> );<br /> <br /> $list = array(<br /> 'colors' => array(<br /> 'red',<br /> 'blue',<br /> 'green'<br /> ),<br /> 'shapes' => array(<br /> 'round', <br /> 'square',<br /> 'circles' => array(<br /> 'ellipse', <br /> 'oval', <br /> 'sphere'<br /> )<br /> ),<br /> 'moods' => array(<br /> 'happy', <br /> 'upset' => array(<br /> 'defeated' => array(<br /> 'dejected',<br /> 'disheartened',<br /> 'depressed'<br /> ),<br /> 'annoyed',<br /> 'cross',<br /> 'angry'<br /> )<br /> )<br /> );<br /> <br /> <br /> echo ul($list, $attributes);</code> <p>The above code will produce this:</p> <code> <ul class="boldlist" id="mylist"><br /> <li>colors<br /> <ul><br /> <li>red</li><br /> <li>blue</li><br /> <li>green</li><br /> </ul><br /> </li><br /> <li>shapes<br /> <ul><br /> <li>round</li><br /> <li>suare</li><br /> <li>circles<br /> <ul><br /> <li>elipse</li><br /> <li>oval</li><br /> <li>sphere</li><br /> </ul><br /> </li><br /> </ul><br /> </li><br /> <li>moods<br /> <ul><br /> <li>happy</li><br /> <li>upset<br /> <ul><br /> <li>defeated<br /> <ul><br /> <li>dejected</li><br /> <li>disheartened</li><br /> <li>depressed</li><br /> </ul><br /> </li><br /> <li>annoyed</li><br /> <li>cross</li><br /> <li>angry</li><br /> </ul><br /> </li><br /> </ul><br /> </li><br /> </ul> </code> <h2><a name="meta"></a>meta()</h2> <p>Helps you generate meta tags. You can pass strings to the function, or simple arrays, or multidimensional ones. Examples:</p> <code> echo meta('description', 'My Great site');<br /> // Generates: <meta name="description" content="My Great Site" /><br /> <br /><br /> echo meta('Content-type', 'text/html; charset=utf-8', 'equiv'); // Note the third parameter. Can be "equiv" or "name"<br /> // Generates: <meta http-equiv="Content-type" content="text/html; charset=utf-8" /><br /> <br /><br /> echo meta(array('name' => 'robots', 'content' => 'no-cache'));<br /> // Generates: <meta name="robots" content="no-cache" /><br /> <br /><br /> $meta = array(<br /> array('name' => 'robots', 'content' => 'no-cache'),<br /> array('name' => 'description', 'content' => 'My Great Site'),<br /> array('name' => 'keywords', 'content' => 'love, passion, intrigue, deception'),<br /> array('name' => 'robots', 'content' => 'no-cache'),<br /> array('name' => 'Content-type', 'content' => 'text/html; charset=utf-8', 'type' => 'equiv')<br /> );<br /> <br /> echo meta($meta); <br /> // Generates: <br /> // <meta name="robots" content="no-cache" /><br /> // <meta name="description" content="My Great Site" /><br /> // <meta name="keywords" content="love, passion, intrigue, deception" /><br /> // <meta name="robots" content="no-cache" /><br /> // <meta http-equiv="Content-type" content="text/html; charset=utf-8" /> </code> <h2><a name="doctype"></a>doctype()</h2> <p>Helps you generate document type declarations, or DTD's. XHTML 1.0 Strict is used by default, but many doctypes are available.</p> <code> echo doctype();<br /> // <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><br /> <br /> echo doctype('html4-trans');<br /> // <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> </code> <p>The following is a list of doctype choices. These are configurable, and pulled from <samp>application/config/doctypes.php</samp></p> <table cellpadding="0" cellspacing="1" border="0" style="width:100%" class="tableborder"> <tr> <th>Doctype</th> <th>Option</th> <th>Result</th> </tr> <tr> <td class="td">XHTML 1.1</td> <td class="td">doctype('xhtml11')</td> <td class="td"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"></td> </tr> <tr> <td class="td">XHTML 1.0 Strict</td> <td class="td">doctype('xhtml1-strict')</td> <td class="td"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"></td> </tr> <tr> <td class="td">XHTML 1.0 Transitional</td> <td class="td">doctype('xhtml1-trans')</td> <td class="td"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"></td> </tr> <tr> <td class="td">XHTML 1.0 Frameset</td> <td class="td">doctype('xhtml1-frame')</td> <td class="td"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"></td> </tr> <tr> <td class="td">HTML 5</td> <td class="td">doctype('html5')</td> <td class="td"><!DOCTYPE html></td> </tr> <tr> <td class="td">HTML 4 Strict</td> <td class="td">doctype('html4-strict')</td> <td class="td"><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"></td> </tr> <tr> <td class="td">HTML 4 Transitional</td> <td class="td">doctype('html4-trans')</td> <td class="td"><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"></td> </tr> <tr> <td class="td">HTML 4 Frameset</td> <td class="td">doctype('html4-frame')</td> <td class="td"><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd"></td> </tr> </table> </div> <!-- END CONTENT --> <div id="footer"> <p> Previous Topic: <a href="form_helper.html">Form Helper</a> · <a href="#top">Top of Page</a> · <a href="../index.html">User Guide Home</a> · Next Topic: <a href="path_helper.html"> Path Helper</a></p> <p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2011 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p> </div> </body> </html>