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Rick Ellis257651d2006-11-23 18:40:13 +0000[diff] [blame]36<td><h1>Code Igniter User Guide Version 1.5.1</h1></td>
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48<a href="http://www.codeigniter.com/">Code Igniter Home</a> &nbsp;&#8250;&nbsp;
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50Alternate PHP Syntax
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63<h1>Alternate PHP Syntax for View Files</h1>
64
admine334c472006-10-21 19:44:22 +0000[diff] [blame]65<p>If you do not utilize Code Igniter's <a href="../libraries/parser.html">template engine</a>, you'll be using pure PHP
adminb93464d2006-10-31 00:36:32 +0000[diff] [blame]66in 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
67PHPs 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,
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]68and eliminate "echo" statements.</p>
69
adminb93464d2006-10-31 00:36:32 +0000[diff] [blame]70<h2>Automatic Short Tag Support</h2>
71
72<p><strong>Note:</strong> If you find that the syntax described in this page does not work on your server it might
admincef21062006-10-30 17:13:13 +0000[diff] [blame]73be that "short tags" are disabled in your PHP ini file. Code Igniter will optionally rewrite short tags on-the-fly,
74allowing you to use that syntax even if your server doesn't support it. This feature can be enabled in your
75<dfn>config/config.php</dfn> file.</p>
76
adminb93464d2006-10-31 00:36:32 +0000[diff] [blame]77<p class="important">Please note that if you do use this feature, if PHP errors are encountered
78in your <strong>view files</strong>, the error message and line number will not be accurately shown. Instead, all errors
79will be shown as <kbd>eval()</kbd> errors.</p>
80
admincef21062006-10-30 17:13:13 +0000[diff] [blame]81
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]82<h2>Alternative Echos</h2>
83
84<p>Normally to echo, or print out a variable you would do this:</p>
85
86<code>&lt;?php echo $variable; ?></code>
87
88<p>With the alternative syntax you can instead do it this way:</p>
89
90<code>&lt;?=$variable?></code>
91
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]92
93
94<h2>Alternative Control Structures</h2>
95
admine334c472006-10-21 19:44:22 +0000[diff] [blame]96<p>Controls structures, like <var>if</var>, <var>for</var>, <var>foreach</var>, and <var>while</var> can be
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]97written in a simplified format as well. Here is an example using foreach:</p>
98
99<code>
100&lt;ul><br />
101<br />
102<var>&lt;?php foreach($todo as $item): ?></var><br />
103<br />
104&lt;li><var>&lt;?=$item?></var>&lt;/li><br />
105<br />
106<var>&lt;?php endforeach ?></var><br />
107<br />
108&lt;/ul></code>
109
110<p>Notice that there are no braces. Instead, the end brace is replaced with <var>endforeach</var>.
111Each of the control structures listed above has a similar closing syntax:
112<var>endif</var>, <var>endfor</var>, <var>endforeach</var>, and <var>endwhile</var></p>
113
admine334c472006-10-21 19:44:22 +0000[diff] [blame]114<p>Also notice that instead of using a semicolon after each structure (except the last one), there is a colon. This is
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]115important!</p>
116
117<p>Here is another example, using if/elseif/else. Notice the colons:</p>
118
119
120<code><var>&lt;?php if ($username == 'sally'): ?></var><br />
121<br />
122&nbsp;&nbsp;&nbsp;&lt;h3>Hi Sally&lt;/h3><br />
123<br />
124<var>&lt;?php elseif ($username == 'joe'): ?></var><br />
125<br />
126&nbsp;&nbsp;&nbsp;&lt;h3>Hi Joe&lt;/h3><br />
127<br />
128<var>&lt;?php else: ?></var><br />
129<br />
130&nbsp;&nbsp;&nbsp;&lt;h3>Hi unknown user&lt;/h3><br />
131<br />
132<var>&lt;?php endif; ?></var></code>
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