147 lines
5.7 KiB
HTML
147 lines
5.7 KiB
HTML
<!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>Alternate PHP Syntax for View Files : 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 2.1.3</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> ›
|
|
Alternate PHP Syntax
|
|
</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>Alternate PHP Syntax for View Files</h1>
|
|
|
|
<p>If you do not utilize CodeIgniter's <a href="../libraries/parser.html">template engine</a>, you'll be using pure PHP
|
|
in your View files. To minimize the PHP code in these files, and to make it easier to identify the code blocks it is recommended that you use
|
|
PHPs alternative syntax for control structures and short tag echo statements. If you are not familiar with this syntax, it allows you to eliminate the braces from your code,
|
|
and eliminate "echo" statements.</p>
|
|
|
|
<h2>Automatic Short Tag Support</h2>
|
|
|
|
<p><strong>Note:</strong> If you find that the syntax described in this page does not work on your server it might
|
|
be that "short tags" are disabled in your PHP ini file. CodeIgniter will optionally rewrite short tags on-the-fly,
|
|
allowing you to use that syntax even if your server doesn't support it. This feature can be enabled in your
|
|
<dfn>config/config.php</dfn> file.</p>
|
|
|
|
<p class="important">Please note that if you do use this feature, if PHP errors are encountered
|
|
in your <strong>view files</strong>, the error message and line number will not be accurately shown. Instead, all errors
|
|
will be shown as <kbd>eval()</kbd> errors.</p>
|
|
|
|
|
|
<h2>Alternative Echos</h2>
|
|
|
|
<p>Normally to echo, or print out a variable you would do this:</p>
|
|
|
|
<code><?php echo $variable; ?></code>
|
|
|
|
<p>With the alternative syntax you can instead do it this way:</p>
|
|
|
|
<code><?=$variable?></code>
|
|
|
|
|
|
|
|
<h2>Alternative Control Structures</h2>
|
|
|
|
<p>Controls structures, like <var>if</var>, <var>for</var>, <var>foreach</var>, and <var>while</var> can be
|
|
written in a simplified format as well. Here is an example using foreach:</p>
|
|
|
|
<code>
|
|
<ul><br />
|
|
<br />
|
|
<var><?php foreach ($todo as $item): ?></var><br />
|
|
<br />
|
|
<li><var><?=$item?></var></li><br />
|
|
<br />
|
|
<var><?php endforeach; ?></var><br />
|
|
<br />
|
|
</ul></code>
|
|
|
|
<p>Notice that there are no braces. Instead, the end brace is replaced with <var>endforeach</var>.
|
|
Each of the control structures listed above has a similar closing syntax:
|
|
<var>endif</var>, <var>endfor</var>, <var>endforeach</var>, and <var>endwhile</var></p>
|
|
|
|
<p>Also notice that instead of using a semicolon after each structure (except the last one), there is a colon. This is
|
|
important!</p>
|
|
|
|
<p>Here is another example, using if/elseif/else. Notice the colons:</p>
|
|
|
|
|
|
<code><var><?php if ($username == 'sally'): ?></var><br />
|
|
<br />
|
|
<h3>Hi Sally</h3><br />
|
|
<br />
|
|
<var><?php elseif ($username == 'joe'): ?></var><br />
|
|
<br />
|
|
<h3>Hi Joe</h3><br />
|
|
<br />
|
|
<var><?php else: ?></var><br />
|
|
<br />
|
|
<h3>Hi unknown user</h3><br />
|
|
<br />
|
|
<var><?php endif; ?></var></code>
|
|
|
|
|
|
|
|
</div>
|
|
<!-- END CONTENT -->
|
|
|
|
|
|
<div id="footer">
|
|
<p>
|
|
Previous Topic: <a href="managing_apps.html">Managing Applications</a>
|
|
·
|
|
<a href="#top">Top of Page</a> ·
|
|
<a href="../index.html">User Guide Home</a> ·
|
|
Next Topic: <a href="security.html">Security</a>
|
|
</p>
|
|
<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2012 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
|
|
</div>
|
|
|
|
</body>
|
|
</html> |