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authorAndrey Andreev <narf@devilix.net>2017-06-19 10:33:58 +0200
committerAndrey Andreev <narf@devilix.net>2017-06-19 10:33:58 +0200
commit6c7a4266410070d30f8f6bcdf9c9e67f3d6478e3 (patch)
treef0aab8f6f5e781d5947b1a5553b6648eb7b7a4ab /user_guide/libraries/parser.html
parent2459285b91d6fc4f5099f9f597529cce1059cb33 (diff)
[ci skip] 3.1.5 release
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+
+
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Template Parser Class &mdash; CodeIgniter 3.1.5 documentation</title>
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+ <link rel="shortcut icon" href="../_static/ci-icon.ico"/>
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+ <link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'>
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+<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li>
+</ul>
+</li>
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+<li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
+</ul>
+</li>
+</ul>
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+<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer&#8217;s Certificate of Origin 1.1</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li>
+</ul>
+</li>
+</ul>
+<ul class="current">
+<li class="toctree-l1 current"><a class="reference internal" href="index.html">Libraries</a><ul class="current">
+<li class="toctree-l2"><a class="reference internal" href="benchmark.html">Benchmarking Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="caching.html">Caching Driver</a></li>
+<li class="toctree-l2"><a class="reference internal" href="calendar.html">Calendaring Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="cart.html">Shopping Cart Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="config.html">Config Class</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="encrypt.html">Encrypt Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="encryption.html">Encryption Library</a></li>
+<li class="toctree-l2"><a class="reference internal" href="file_uploading.html">File Uploading Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="form_validation.html">Form Validation</a></li>
+<li class="toctree-l2"><a class="reference internal" href="ftp.html">FTP Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="image_lib.html">Image Manipulation Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="input.html">Input Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="javascript.html">Javascript Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="language.html">Language Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="loader.html">Loader Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="migration.html">Migrations Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="output.html">Output Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="pagination.html">Pagination Class</a></li>
+<li class="toctree-l2 current"><a class="current reference internal" href="">Template Parser Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="security.html">Security Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="sessions.html">Session Library</a></li>
+<li class="toctree-l2"><a class="reference internal" href="table.html">HTML Table Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="trackback.html">Trackback Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="typography.html">Typography Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="unit_testing.html">Unit Testing Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="uri.html">URI Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="user_agent.html">User Agent Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
+<li class="toctree-l2"><a class="reference internal" href="zip.html">Zip Encoding Class</a></li>
+</ul>
+</li>
+</ul>
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li>
+</ul>
+</li>
+</ul>
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
+</ul>
+</li>
+</ul>
+
+
+
+ </div>
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+ <li>Template Parser Class</li>
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+
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+ <div style="float:right;margin-left:5px;" id="closeMe">
+ <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" />
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+ <div role="main" class="document">
+
+ <div class="section" id="template-parser-class">
+<h1>Template Parser Class<a class="headerlink" href="#template-parser-class" title="Permalink to this headline">¶</a></h1>
+<p>The Template Parser Class can perform simple text substitution for
+pseudo-variables contained within your view files.
+It can parse simple variables or variable tag pairs.</p>
+<p>If you&#8217;ve never used a template engine,
+pseudo-variable names are enclosed in braces, like this:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;</span><span class="nx">html</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">head</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">title</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">blog_title</span><span class="p">}</span><span class="o">&lt;/</span><span class="nx">title</span><span class="o">&gt;</span>
+ <span class="o">&lt;/</span><span class="nx">head</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">body</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">h3</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">blog_heading</span><span class="p">}</span><span class="o">&lt;/</span><span class="nx">h3</span><span class="o">&gt;</span>
+
+ <span class="p">{</span><span class="nx">blog_entries</span><span class="p">}</span>
+ <span class="o">&lt;</span><span class="nx">h5</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">title</span><span class="p">}</span><span class="o">&lt;/</span><span class="nx">h5</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">p</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">body</span><span class="p">}</span><span class="o">&lt;/</span><span class="nx">p</span><span class="o">&gt;</span>
+ <span class="p">{</span><span class="o">/</span><span class="nx">blog_entries</span><span class="p">}</span>
+
+ <span class="o">&lt;/</span><span class="nx">body</span><span class="o">&gt;</span>
+<span class="o">&lt;/</span><span class="nx">html</span><span class="o">&gt;</span>
+</pre></div>
+</div>
+<p>These variables are not actual PHP variables, but rather plain text
+representations that allow you to eliminate PHP from your templates
+(view files).</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">CodeIgniter does <strong>not</strong> require you to use this class since
+using pure PHP in your view pages lets them run a little faster.
+However, some developers prefer to use a template engine if
+they work with designers who they feel would find some
+confusion working with PHP.</p>
+</div>
+<div class="admonition important">
+<p class="first admonition-title">Important</p>
+<p class="last">The Template Parser Class is <strong>not</strong> a full-blown
+template parsing solution. We&#8217;ve kept it very lean on purpose in order
+to maintain maximum performance.</p>
+</div>
+<div class="contents local topic" id="contents">
+<ul class="simple">
+<li><a class="reference internal" href="#using-the-template-parser-class" id="id1">Using the Template Parser Class</a><ul>
+<li><a class="reference internal" href="#initializing-the-class" id="id2">Initializing the Class</a></li>
+<li><a class="reference internal" href="#parsing-templates" id="id3">Parsing templates</a></li>
+<li><a class="reference internal" href="#variable-pairs" id="id4">Variable Pairs</a></li>
+<li><a class="reference internal" href="#usage-notes" id="id5">Usage Notes</a></li>
+<li><a class="reference internal" href="#view-fragments" id="id6">View Fragments</a></li>
+</ul>
+</li>
+<li><a class="reference internal" href="#class-reference" id="id7">Class Reference</a></li>
+</ul>
+</div>
+<div class="custom-index container"></div><div class="section" id="using-the-template-parser-class">
+<h2><a class="toc-backref" href="#id1">Using the Template Parser Class</a><a class="headerlink" href="#using-the-template-parser-class" title="Permalink to this headline">¶</a></h2>
+<div class="section" id="initializing-the-class">
+<h3><a class="toc-backref" href="#id2">Initializing the Class</a><a class="headerlink" href="#initializing-the-class" title="Permalink to this headline">¶</a></h3>
+<p>Like most other classes in CodeIgniter, the Parser class is initialized
+in your controller using the <tt class="docutils literal"><span class="pre">$this-&gt;load-&gt;library()</span></tt> method:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">library</span><span class="p">(</span><span class="s1">&#39;parser&#39;</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Once loaded, the Parser library object will be available using:
+$this-&gt;parser</p>
+</div>
+<div class="section" id="parsing-templates">
+<h3><a class="toc-backref" href="#id3">Parsing templates</a><a class="headerlink" href="#parsing-templates" title="Permalink to this headline">¶</a></h3>
+<p>You can use the <tt class="docutils literal"><span class="pre">parse()</span></tt> method to parse (or render) simple templates,
+like this:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;blog_title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;My Blog Title&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;blog_heading&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;My Blog Heading&#39;</span>
+<span class="p">);</span>
+
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse</span><span class="p">(</span><span class="s1">&#39;blog_template&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The first parameter contains the name of the <a class="reference internal" href="../general/views.html"><em>view
+file</em></a> (in this example the file would be called
+blog_template.php), and the second parameter contains an associative
+array of data to be replaced in the template. In the above example, the
+template would contain two variables: {blog_title} and {blog_heading}</p>
+<p>There is no need to &#8220;echo&#8221; or do something with the data returned by
+$this-&gt;parser-&gt;parse(). It is automatically passed to the output class
+to be sent to the browser. However, if you do want the data returned
+instead of sent to the output class you can pass TRUE (boolean) as the
+third parameter:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$string</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse</span><span class="p">(</span><span class="s1">&#39;blog_template&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="variable-pairs">
+<h3><a class="toc-backref" href="#id4">Variable Pairs</a><a class="headerlink" href="#variable-pairs" title="Permalink to this headline">¶</a></h3>
+<p>The above example code allows simple variables to be replaced. What if
+you would like an entire block of variables to be repeated, with each
+iteration containing new values? Consider the template example we showed
+at the top of the page:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;</span><span class="nx">html</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">head</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">title</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">blog_title</span><span class="p">}</span><span class="o">&lt;/</span><span class="nx">title</span><span class="o">&gt;</span>
+ <span class="o">&lt;/</span><span class="nx">head</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">body</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">h3</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">blog_heading</span><span class="p">}</span><span class="o">&lt;/</span><span class="nx">h3</span><span class="o">&gt;</span>
+
+ <span class="p">{</span><span class="nx">blog_entries</span><span class="p">}</span>
+ <span class="o">&lt;</span><span class="nx">h5</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">title</span><span class="p">}</span><span class="o">&lt;/</span><span class="nx">h5</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">p</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">body</span><span class="p">}</span><span class="o">&lt;/</span><span class="nx">p</span><span class="o">&gt;</span>
+ <span class="p">{</span><span class="o">/</span><span class="nx">blog_entries</span><span class="p">}</span>
+
+ <span class="o">&lt;/</span><span class="nx">body</span><span class="o">&gt;</span>
+<span class="o">&lt;/</span><span class="nx">html</span><span class="o">&gt;</span>
+</pre></div>
+</div>
+<p>In the above code you&#8217;ll notice a pair of variables: {blog_entries}
+data... {/blog_entries}. In a case like this, the entire chunk of data
+between these pairs would be repeated multiple times, corresponding to
+the number of rows in the &#8220;blog_entries&#8221; element of the parameters array.</p>
+<p>Parsing variable pairs is done using the identical code shown above to
+parse single variables, except, you will add a multi-dimensional array
+corresponding to your variable pair data. Consider this example:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">library</span><span class="p">(</span><span class="s1">&#39;parser&#39;</span><span class="p">);</span>
+
+<span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;blog_title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;My Blog Title&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;blog_heading&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;My Blog Heading&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;blog_entries&#39;</span> <span class="o">=&gt;</span> <span class="k">array</span><span class="p">(</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Title 1&#39;</span><span class="p">,</span> <span class="s1">&#39;body&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Body 1&#39;</span><span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Title 2&#39;</span><span class="p">,</span> <span class="s1">&#39;body&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Body 2&#39;</span><span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Title 3&#39;</span><span class="p">,</span> <span class="s1">&#39;body&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Body 3&#39;</span><span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Title 4&#39;</span><span class="p">,</span> <span class="s1">&#39;body&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Body 4&#39;</span><span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Title 5&#39;</span><span class="p">,</span> <span class="s1">&#39;body&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Body 5&#39;</span><span class="p">)</span>
+ <span class="p">)</span>
+<span class="p">);</span>
+
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse</span><span class="p">(</span><span class="s1">&#39;blog_template&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>If your &#8220;pair&#8221; data is coming from a database result, which is already a
+multi-dimensional array, you can simply use the database <tt class="docutils literal"><span class="pre">result_array()</span></tt>
+method:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">db</span><span class="o">-&gt;</span><span class="na">query</span><span class="p">(</span><span class="s2">&quot;SELECT * FROM blog&quot;</span><span class="p">);</span>
+
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">library</span><span class="p">(</span><span class="s1">&#39;parser&#39;</span><span class="p">);</span>
+
+<span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;blog_title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;My Blog Title&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;blog_heading&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;My Blog Heading&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;blog_entries&#39;</span> <span class="o">=&gt;</span> <span class="nv">$query</span><span class="o">-&gt;</span><span class="na">result_array</span><span class="p">()</span>
+<span class="p">);</span>
+
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse</span><span class="p">(</span><span class="s1">&#39;blog_template&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="usage-notes">
+<h3><a class="toc-backref" href="#id5">Usage Notes</a><a class="headerlink" href="#usage-notes" title="Permalink to this headline">¶</a></h3>
+<p>If you include substitution parameters that are not referenced in your
+template, they are ignored:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$template</span> <span class="o">=</span> <span class="s1">&#39;Hello, {firstname} {lastname}&#39;</span><span class="p">;</span>
+<span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Mr&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;firstname&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;John&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;lastname&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Doe&#39;</span>
+<span class="p">);</span>
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse_string</span><span class="p">(</span><span class="nv">$template</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
+
+<span class="c1">// Result: Hello, John Doe</span>
+</pre></div>
+</div>
+<p>If you do not include a substitution parameter that is referenced in your
+template, the original pseudo-variable is shown in the result:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$template</span> <span class="o">=</span> <span class="s1">&#39;Hello, {firstname} {initials} {lastname}&#39;</span><span class="p">;</span>
+<span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Mr&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;firstname&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;John&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;lastname&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Doe&#39;</span>
+<span class="p">);</span>
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse_string</span><span class="p">(</span><span class="nv">$template</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
+
+<span class="c1">// Result: Hello, John {initials} Doe</span>
+</pre></div>
+</div>
+<p>If you provide a string substitution parameter when an array is expected,
+i.e. for a variable pair, the substitution is done for the opening variable
+pair tag, but the closing variable pair tag is not rendered properly:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$template</span> <span class="o">=</span> <span class="s1">&#39;Hello, {firstname} {lastname} ({degrees}{degree} {/degrees})&#39;</span><span class="p">;</span>
+<span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;degrees&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Mr&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;firstname&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;John&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;lastname&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Doe&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;titles&#39;</span> <span class="o">=&gt;</span> <span class="k">array</span><span class="p">(</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;degree&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;BSc&#39;</span><span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;degree&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;PhD&#39;</span><span class="p">)</span>
+ <span class="p">)</span>
+<span class="p">);</span>
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse_string</span><span class="p">(</span><span class="nv">$template</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
+
+<span class="c1">// Result: Hello, John Doe (Mr{degree} {/degrees})</span>
+</pre></div>
+</div>
+<p>If you name one of your individual substitution parameters the same as one
+used inside a variable pair, the results may not be as expected:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$template</span> <span class="o">=</span> <span class="s1">&#39;Hello, {firstname} {lastname} ({degrees}{degree} {/degrees})&#39;</span><span class="p">;</span>
+<span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;degree&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Mr&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;firstname&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;John&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;lastname&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Doe&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;degrees&#39;</span> <span class="o">=&gt;</span> <span class="k">array</span><span class="p">(</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;degree&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;BSc&#39;</span><span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;degree&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;PhD&#39;</span><span class="p">)</span>
+ <span class="p">)</span>
+<span class="p">);</span>
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse_string</span><span class="p">(</span><span class="nv">$template</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
+
+<span class="c1">// Result: Hello, John Doe (Mr Mr )</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="view-fragments">
+<h3><a class="toc-backref" href="#id6">View Fragments</a><a class="headerlink" href="#view-fragments" title="Permalink to this headline">¶</a></h3>
+<p>You do not have to use variable pairs to get the effect of iteration in
+your views. It is possible to use a view fragment for what would be inside
+a variable pair, and to control the iteration in your controller instead
+of in the view.</p>
+<p>An example with the iteration controlled in the view:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$template</span> <span class="o">=</span> <span class="s1">&#39;&lt;ul&gt;{menuitems}</span>
+<span class="s1"> &lt;li&gt;&lt;a href=&quot;{link}&quot;&gt;{title}&lt;/a&gt;&lt;/li&gt;</span>
+<span class="s1">{/menuitems}&lt;/ul&gt;&#39;</span><span class="p">;</span>
+
+<span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;menuitems&#39;</span> <span class="o">=&gt;</span> <span class="k">array</span><span class="p">(</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;First Link&#39;</span><span class="p">,</span> <span class="s1">&#39;link&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;/first&#39;</span><span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Second Link&#39;</span><span class="p">,</span> <span class="s1">&#39;link&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;/second&#39;</span><span class="p">),</span>
+ <span class="p">)</span>
+<span class="p">);</span>
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse_string</span><span class="p">(</span><span class="nv">$template</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Result:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;</span><span class="nx">ul</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">li</span><span class="o">&gt;&lt;</span><span class="nx">a</span> <span class="nx">href</span><span class="o">=</span><span class="s2">&quot;/first&quot;</span><span class="o">&gt;</span><span class="nx">First</span> <span class="nx">Link</span><span class="o">&lt;/</span><span class="nx">a</span><span class="o">&gt;&lt;/</span><span class="nx">li</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">li</span><span class="o">&gt;&lt;</span><span class="nx">a</span> <span class="nx">href</span><span class="o">=</span><span class="s2">&quot;/second&quot;</span><span class="o">&gt;</span><span class="nx">Second</span> <span class="nx">Link</span><span class="o">&lt;/</span><span class="nx">a</span><span class="o">&gt;&lt;/</span><span class="nx">li</span><span class="o">&gt;</span>
+<span class="o">&lt;/</span><span class="nx">ul</span><span class="o">&gt;</span>
+</pre></div>
+</div>
+<p>An example with the iteration controlled in the controller,
+using a view fragment:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$temp</span> <span class="o">=</span> <span class="s1">&#39;&#39;</span><span class="p">;</span>
+<span class="nv">$template1</span> <span class="o">=</span> <span class="s1">&#39;&lt;li&gt;&lt;a href=&quot;{link}&quot;&gt;{title}&lt;/a&gt;&lt;/li&gt;&#39;</span><span class="p">;</span>
+<span class="nv">$data1</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;First Link&#39;</span><span class="p">,</span> <span class="s1">&#39;link&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;/first&#39;</span><span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span><span class="s1">&#39;title&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Second Link&#39;</span><span class="p">,</span> <span class="s1">&#39;link&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;/second&#39;</span><span class="p">),</span>
+<span class="p">);</span>
+
+<span class="k">foreach</span> <span class="p">(</span><span class="nv">$data1</span> <span class="k">as</span> <span class="nv">$menuitem</span><span class="p">)</span>
+<span class="p">{</span>
+ <span class="nv">$temp</span> <span class="o">.=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse_string</span><span class="p">(</span><span class="nv">$template1</span><span class="p">,</span> <span class="nv">$menuitem</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span>
+<span class="p">}</span>
+
+<span class="nv">$template</span> <span class="o">=</span> <span class="s1">&#39;&lt;ul&gt;{menuitems}&lt;/ul&gt;&#39;</span><span class="p">;</span>
+<span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;menuitems&#39;</span> <span class="o">=&gt;</span> <span class="nv">$temp</span>
+<span class="p">);</span>
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">parser</span><span class="o">-&gt;</span><span class="na">parse_string</span><span class="p">(</span><span class="nv">$template</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Result:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;</span><span class="nx">ul</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">li</span><span class="o">&gt;&lt;</span><span class="nx">a</span> <span class="nx">href</span><span class="o">=</span><span class="s2">&quot;/first&quot;</span><span class="o">&gt;</span><span class="nx">First</span> <span class="nx">Link</span><span class="o">&lt;/</span><span class="nx">a</span><span class="o">&gt;&lt;/</span><span class="nx">li</span><span class="o">&gt;</span>
+ <span class="o">&lt;</span><span class="nx">li</span><span class="o">&gt;&lt;</span><span class="nx">a</span> <span class="nx">href</span><span class="o">=</span><span class="s2">&quot;/second&quot;</span><span class="o">&gt;</span><span class="nx">Second</span> <span class="nx">Link</span><span class="o">&lt;/</span><span class="nx">a</span><span class="o">&gt;&lt;/</span><span class="nx">li</span><span class="o">&gt;</span>
+<span class="o">&lt;/</span><span class="nx">ul</span><span class="o">&gt;</span>
+</pre></div>
+</div>
+</div>
+</div>
+<div class="section" id="class-reference">
+<h2><a class="toc-backref" href="#id7">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2>
+<dl class="class">
+<dt id="CI_Parser">
+<em class="property">class </em><tt class="descname">CI_Parser</tt><a class="headerlink" href="#CI_Parser" title="Permalink to this definition">¶</a></dt>
+<dd><dl class="method">
+<dt id="CI_Parser::parse">
+<tt class="descname">parse</tt><big>(</big><em>$template</em>, <em>$data</em><span class="optional">[</span>, <em>$return = FALSE</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_Parser::parse" title="Permalink to this definition">¶</a></dt>
+<dd><table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>$template</strong> (<em>string</em>) &#8211; Path to view file</li>
+<li><strong>$data</strong> (<em>array</em>) &#8211; Variable data</li>
+<li><strong>$return</strong> (<em>bool</em>) &#8211; Whether to only return the parsed template</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Parsed template string</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
+</td>
+</tr>
+</tbody>
+</table>
+<p>Parses a template from the provided path and variables.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Parser::parse_string">
+<tt class="descname">parse_string</tt><big>(</big><em>$template</em>, <em>$data</em><span class="optional">[</span>, <em>$return = FALSE</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_Parser::parse_string" title="Permalink to this definition">¶</a></dt>
+<dd><table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>$template</strong> (<em>string</em>) &#8211; Path to view file</li>
+<li><strong>$data</strong> (<em>array</em>) &#8211; Variable data</li>
+<li><strong>$return</strong> (<em>bool</em>) &#8211; Whether to only return the parsed template</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Parsed template string</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
+</td>
+</tr>
+</tbody>
+</table>
+<p>This method works exactly like <tt class="docutils literal"><span class="pre">parse()</span></tt>, only it accepts
+the template as a string instead of loading a view file.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Parser::set_delimiters">
+<tt class="descname">set_delimiters</tt><big>(</big><span class="optional">[</span><em>$l = '{'</em><span class="optional">[</span>, <em>$r = '}'</em><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_Parser::set_delimiters" title="Permalink to this definition">¶</a></dt>
+<dd><table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>$l</strong> (<em>string</em>) &#8211; Left delimiter</li>
+<li><strong>$r</strong> (<em>string</em>) &#8211; Right delimiter</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">void</p>
+</td>
+</tr>
+</tbody>
+</table>
+<p>Sets the delimiters (opening and closing) for a
+pseudo-variable &#8220;tag&#8221; in a template.</p>
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