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567 lines
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<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/config.html">Config Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/table.html">HTML Table Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/trackback.html">Trackback Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
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<div class="section" id="alternate-php-syntax-for-view-files">
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<h1>Alternate PHP Syntax for View Files<a class="headerlink" href="#alternate-php-syntax-for-view-files" title="Permalink to this headline">¶</a></h1>
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<p>If you do not utilize CodeIgniter’s <a class="reference internal" href="../libraries/parser.html"><em>template
|
|
engine</em></a>, you’ll be using pure PHP in your
|
|
View files. To minimize the PHP code in these files, and to make it
|
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easier to identify the code blocks it is recommended that you use PHPs
|
|
alternative syntax for control structures and short tag echo statements.
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If you are not familiar with this syntax, it allows you to eliminate the
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|
braces from your code, and eliminate “echo” statements.</p>
|
|
<div class="section" id="automatic-short-tag-support">
|
|
<h2>Automatic Short Tag Support<a class="headerlink" href="#automatic-short-tag-support" title="Permalink to this headline">¶</a></h2>
|
|
<div class="admonition note">
|
|
<p class="first admonition-title">Note</p>
|
|
<p class="last">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.
|
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This feature can be enabled in your <em>config/config.php</em> file.</p>
|
|
</div>
|
|
<p>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
|
|
<tt class="docutils literal"><span class="pre">eval()</span></tt> errors.</p>
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</div>
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<div class="section" id="alternative-echos">
|
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<h2>Alternative Echos<a class="headerlink" href="#alternative-echos" title="Permalink to this headline">¶</a></h2>
|
|
<p>Normally to echo, or print out a variable you would do this:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nv">$variable</span><span class="p">;</span> <span class="cp">?></span>
|
|
</pre></div>
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</div>
|
|
<p>With the alternative syntax you can instead do it this way:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?=</span><span class="nv">$variable</span><span class="cp">?></span>
|
|
</pre></div>
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</div>
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</div>
|
|
<div class="section" id="alternative-control-structures">
|
|
<h2>Alternative Control Structures<a class="headerlink" href="#alternative-control-structures" title="Permalink to this headline">¶</a></h2>
|
|
<p>Controls structures, like if, for, foreach, and while can be written in
|
|
a simplified format as well. Here is an example using <tt class="docutils literal"><span class="pre">foreach</span></tt>:</p>
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|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">ul</span><span class="o">></span>
|
|
|
|
<span class="o"><?</span><span class="nx">php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$todo</span> <span class="k">as</span> <span class="nv">$item</span><span class="p">)</span><span class="o">:</span> <span class="cp">?></span>
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|
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|
<span class="p"><</span><span class="nt">li</span><span class="p">></span><span class="cp"><?</span><span class="o">=</span><span class="nv">$item</span><span class="cp">?></span><span class="p"></</span><span class="nt">li</span><span class="p">></span>
|
|
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|
<span class="cp"><?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?></span>
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|
<span class="p"></</span><span class="nt">ul</span><span class="p">></span>
|
|
</pre></div>
|
|
</div>
|
|
<p>Notice that there are no braces. Instead, the end brace is replaced with
|
|
<tt class="docutils literal"><span class="pre">endforeach</span></tt>. Each of the control structures listed above has a similar
|
|
closing syntax: <tt class="docutils literal"><span class="pre">endif</span></tt>, <tt class="docutils literal"><span class="pre">endfor</span></tt>, <tt class="docutils literal"><span class="pre">endforeach</span></tt>, and <tt class="docutils literal"><span class="pre">endwhile</span></tt></p>
|
|
<p>Also notice that instead of using a semicolon after each structure
|
|
(except the last one), there is a colon. This is important!</p>
|
|
<p>Here is another example, using <tt class="docutils literal"><span class="pre">if</span></tt>/<tt class="docutils literal"><span class="pre">elseif</span></tt>/<tt class="docutils literal"><span class="pre">else</span></tt>. Notice the colons:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> <span class="k">if</span> <span class="p">(</span><span class="nv">$username</span> <span class="o">===</span> <span class="s1">'sally'</span><span class="p">)</span><span class="o">:</span> <span class="cp">?></span>
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<span class="p"><</span><span class="nt">h3</span><span class="p">></span>Hi Sally<span class="p"></</span><span class="nt">h3</span><span class="p">></span>
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<span class="cp"><?php</span> <span class="k">elseif</span> <span class="p">(</span><span class="nv">$username</span> <span class="o">===</span> <span class="s1">'joe'</span><span class="p">)</span><span class="o">:</span> <span class="cp">?></span>
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<span class="p"><</span><span class="nt">h3</span><span class="p">></span>Hi Joe<span class="p"></</span><span class="nt">h3</span><span class="p">></span>
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<span class="cp"><?php</span> <span class="k">else</span><span class="o">:</span> <span class="cp">?></span>
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<span class="p"><</span><span class="nt">h3</span><span class="p">></span>Hi unknown user<span class="p"></</span><span class="nt">h3</span><span class="p">></span>
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<span class="cp"><?php</span> <span class="k">endif</span><span class="p">;</span> <span class="cp">?></span>
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