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Pascal Kriete1f622292011-04-07 12:06:51 -0400[diff] [blame]31<td><h1>CodeIgniter User Guide Version 2.0.2</h1></td>
Derek Allard2067d1a2008-11-13 22:59:24 +0000[diff] [blame]32<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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58<h1>Alternate PHP Syntax for View Files</h1>
59
60<p>If you do not utilize CodeIgniter's <a href="../libraries/parser.html">template engine</a>, you'll be using pure PHP
Razican114ab092011-04-25 17:26:45 +0200[diff] [blame]61in 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
62PHPs 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,
Derek Allard2067d1a2008-11-13 22:59:24 +0000[diff] [blame]63and eliminate "echo" statements.</p>
64
65<h2>Automatic Short Tag Support</h2>
66
67<p><strong>Note:</strong> If you find that the syntax described in this page does not work on your server it might
Barry Mienydd671972010-10-04 16:33:58 +0200[diff] [blame]68be that "short tags" are disabled in your PHP ini file. CodeIgniter will optionally rewrite short tags on-the-fly,
Razican114ab092011-04-25 17:26:45 +0200[diff] [blame]69allowing you to use that syntax even if your server doesn't support it. This feature can be enabled in your
Derek Allard2067d1a2008-11-13 22:59:24 +0000[diff] [blame]70<dfn>config/config.php</dfn> file.</p>
71
72<p class="important">Please note that if you do use this feature, if PHP errors are encountered
Razican114ab092011-04-25 17:26:45 +0200[diff] [blame]73in your <strong>view files</strong>, the error message and line number will not be accurately shown. Instead, all errors
Derek Allard2067d1a2008-11-13 22:59:24 +0000[diff] [blame]74will be shown as <kbd>eval()</kbd> errors.</p>
75
76
77<h2>Alternative Echos</h2>
78
79<p>Normally to echo, or print out a variable you would do this:</p>
80
81<code>&lt;?php echo $variable; ?></code>
82
83<p>With the alternative syntax you can instead do it this way:</p>
84
85<code>&lt;?=$variable?></code>
86
87
88
89<h2>Alternative Control Structures</h2>
90
91<p>Controls structures, like <var>if</var>, <var>for</var>, <var>foreach</var>, and <var>while</var> can be
Razican114ab092011-04-25 17:26:45 +0200[diff] [blame]92written in a simplified format as well. Here is an example using foreach:</p>
Derek Allard2067d1a2008-11-13 22:59:24 +0000[diff] [blame]93
94<code>
95&lt;ul><br />
96<br />
Pascal Krietefeba2de2011-02-14 13:25:30 -0500[diff] [blame]97<var>&lt;?php foreach ($todo as $item): ?></var><br />
Derek Allard2067d1a2008-11-13 22:59:24 +0000[diff] [blame]98<br />
99&lt;li><var>&lt;?=$item?></var>&lt;/li><br />
100<br />
101<var>&lt;?php endforeach; ?></var><br />
102<br />
103&lt;/ul></code>
104
Razican114ab092011-04-25 17:26:45 +0200[diff] [blame]105<p>Notice that there are no braces. Instead, the end brace is replaced with <var>endforeach</var>.
Derek Allard2067d1a2008-11-13 22:59:24 +0000[diff] [blame]106Each of the control structures listed above has a similar closing syntax:
107<var>endif</var>, <var>endfor</var>, <var>endforeach</var>, and <var>endwhile</var></p>
108
Razican114ab092011-04-25 17:26:45 +0200[diff] [blame]109<p>Also notice that instead of using a semicolon after each structure (except the last one), there is a colon. This is
Derek Allard2067d1a2008-11-13 22:59:24 +0000[diff] [blame]110important!</p>
111
Razican114ab092011-04-25 17:26:45 +0200[diff] [blame]112<p>Here is another example, using if/elseif/else. Notice the colons:</p>
Derek Allard2067d1a2008-11-13 22:59:24 +0000[diff] [blame]113
114
115<code><var>&lt;?php if ($username == 'sally'): ?></var><br />
116<br />
117&nbsp;&nbsp;&nbsp;&lt;h3>Hi Sally&lt;/h3><br />
118<br />
119<var>&lt;?php elseif ($username == 'joe'): ?></var><br />
120<br />
121&nbsp;&nbsp;&nbsp;&lt;h3>Hi Joe&lt;/h3><br />
122<br />
123<var>&lt;?php else: ?></var><br />
124<br />
125&nbsp;&nbsp;&nbsp;&lt;h3>Hi unknown user&lt;/h3><br />
126<br />
127<var>&lt;?php endif; ?></var></code>
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Derek Jones700205a2011-01-28 07:44:28 -0600[diff] [blame]143<p><a href="http://codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2006 - 2011 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
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