user_guide/general/alternative_php.html - code-igniter-v3-giggi - Gitiles

 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 <html>
 <head>

 <title>Code Igniter 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="../scripts/nav.js"></script>
 <script type="text/javascript" src="../scripts/prototype.lite.js"></script>
 <script type="text/javascript" src="../scripts/moo.fx.js"></script>
 <script type="text/javascript">
 window.onload = function() {
 	myHeight = new fx.Height('nav', {duration: 400});
 	myHeight.hide();
 }
 </script>

 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta http-equiv='expires' content='-1' />
 <meta http-equiv= 'pragma' content='no-cache' />
 <meta name='robots' content='all' />
 <meta name='author' content='Rick Ellis' />
 <meta name='description' content='Code Igniter 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.jpg" width="153" height="44" 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>Code Igniter User Guide Version 1.4.0</h1></td>
 <td id="breadcrumb_right"><a href="../toc.html">Full Table of Contents</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://www.codeigniter.com/">Code Igniter Home</a> &nbsp;&#8250;&nbsp;
 <a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;
 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="www.codeigniter.com/user_guide/" />Search User Guide&nbsp; <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" />&nbsp;<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 Code Igniter'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 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>Alternative Echos</h2>

 <p>Normally to echo, or print out a variable you would do this:</p>

 <code>&lt;?php echo $variable; ?></code>

 <p>With the alternative syntax you can instead do it this way:</p>

 <code>&lt;?=$variable?></code>

 <p class="important"><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.</p>


 <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>
 &lt;ul><br />
 <br />
 <var>&lt;?php foreach($todo as $item): ?></var><br />
 <br />
 &lt;li><var>&lt;?=$item?></var>&lt;/li><br />
 <br />
 <var>&lt;?php endforeach ?></var><br />
 <br />
 &lt;/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>&lt;?php if ($username == 'sally'): ?></var><br />
 <br />
 &nbsp;&nbsp;&nbsp;&lt;h3>Hi Sally&lt;/h3><br />
 <br />
 <var>&lt;?php elseif ($username == 'joe'): ?></var><br />
 <br />
 &nbsp;&nbsp;&nbsp;&lt;h3>Hi Joe&lt;/h3><br />
 <br />
 <var>&lt;?php else: ?></var><br />
 <br />
 &nbsp;&nbsp;&nbsp;&lt;h3>Hi unknown user&lt;/h3><br />
 <br />
 <var>&lt;?php endif; ?></var></code>


 </div>
 <!-- END CONTENT -->


 <div id="footer">
 <p>
 Previous Topic:&nbsp;&nbsp;<a href="multiple_apps.html">Running Multiple Applications</a>
 &nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
 <a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
 <a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
 Next Topic:&nbsp;&nbsp;<a href="security.html">Security</a>
 <p>
 <p><a href="http://www.codeigniter.com">Code Igniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2006 &nbsp;&middot;&nbsp; <a href="http://www.pmachine.com">pMachine, Inc.</a></p>
 </div>

 </body>
 </html>
	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
	<html>
	<head>

	<title>Code Igniter 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="../scripts/nav.js"></script>
	<script type="text/javascript" src="../scripts/prototype.lite.js"></script>
	<script type="text/javascript" src="../scripts/moo.fx.js"></script>
	<script type="text/javascript">
	window.onload = function() {
	myHeight = new fx.Height('nav', {duration: 400});
	myHeight.hide();
	}
	</script>

	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<meta http-equiv='expires' content='-1' />
	<meta http-equiv= 'pragma' content='no-cache' />
	<meta name='robots' content='all' />
	<meta name='author' content='Rick Ellis' />
	<meta name='description' content='Code Igniter 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.jpg" width="153" height="44" 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>Code Igniter User Guide Version 1.4.0</h1></td>
	<td id="breadcrumb_right"><a href="../toc.html">Full Table of Contents</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://www.codeigniter.com/">Code Igniter 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="www.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 Code Igniter'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 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>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>

	<p class="important"><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.</p>


	<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="multiple_apps.html">Running Multiple 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://www.codeigniter.com">Code Igniter</a>  ·  Copyright © 2006  ·  <a href="http://www.pmachine.com">pMachine, Inc.</a></p>
	</div>

	</body>
	</html>