bzr branch
http://gegoxaren.bato24.eu/bzr/lenasys/trunk
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20.1.1
by galaxyAbstractor
* Added an simple admin panel to the codeviewer-cmssy stuff |
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<td><h1>CodeIgniter User Guide Version 2.1.3</h1></td> |
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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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Alternate PHP Syntax |
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<!-- START CONTENT -->
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<div id="content"> |
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<h1>Alternate PHP Syntax for View Files</h1> |
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<p>If you do not utilize CodeIgniter's <a href="../libraries/parser.html">template engine</a>, you'll be using pure PHP |
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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 |
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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, |
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and eliminate "echo" statements.</p> |
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<h2>Automatic Short Tag Support</h2> |
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<p><strong>Note:</strong> If you find that the syntax described in this page does not work on your server it might |
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be that "short tags" are disabled in your PHP ini file. CodeIgniter will optionally rewrite short tags on-the-fly, |
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allowing you to use that syntax even if your server doesn't support it. This feature can be enabled in your |
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<dfn>config/config.php</dfn> file.</p> |
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<p class="important">Please note that if you do use this feature, if PHP errors are encountered |
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in your <strong>view files</strong>, the error message and line number will not be accurately shown. Instead, all errors |
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will be shown as <kbd>eval()</kbd> errors.</p> |
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<h2>Alternative Echos</h2> |
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<p>Normally to echo, or print out a variable you would do this:</p> |
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<code><?php echo $variable; ?></code> |
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<p>With the alternative syntax you can instead do it this way:</p> |
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<code><?=$variable?></code> |
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<h2>Alternative Control Structures</h2> |
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<p>Controls structures, like <var>if</var>, <var>for</var>, <var>foreach</var>, and <var>while</var> can be |
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written in a simplified format as well. Here is an example using foreach:</p> |
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<code> |
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<ul><br /> |
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<br /> |
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<var><?php foreach ($todo as $item): ?></var><br /> |
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<br /> |
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<li><var><?=$item?></var></li><br /> |
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<br /> |
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<var><?php endforeach; ?></var><br /> |
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<br /> |
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</ul></code> |
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<p>Notice that there are no braces. Instead, the end brace is replaced with <var>endforeach</var>. |
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Each of the control structures listed above has a similar closing syntax: |
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<var>endif</var>, <var>endfor</var>, <var>endforeach</var>, and <var>endwhile</var></p> |
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<p>Also notice that instead of using a semicolon after each structure (except the last one), there is a colon. This is |
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important!</p> |
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<p>Here is another example, using if/elseif/else. Notice the colons:</p> |
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<code><var><?php if ($username == 'sally'): ?></var><br /> |
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<br /> |
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<h3>Hi Sally</h3><br /> |
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<br /> |
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<var><?php elseif ($username == 'joe'): ?></var><br /> |
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<br /> |
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<h3>Hi Joe</h3><br /> |
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<br /> |
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<var><?php else: ?></var><br /> |
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<br /> |
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<h3>Hi unknown user</h3><br /> |
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<br /> |
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<var><?php endif; ?></var></code> |
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