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authorAndrey Andreev <narf@devilix.net>2019-01-16 16:49:35 +0100
committerAndrey Andreev <narf@devilix.net>2019-01-16 16:49:35 +0100
commitc576995304fc3609cca0b7b92d1b2cd611ec82f5 (patch)
treec8b9121cb295b56bbabe3aeaad0a3eb1f2d390bb /user_guide/libraries/cart.html
parent4eaf80a6ec0b58a0adc95638153363e00ebf5378 (diff)
[ci skip] 3.1.10 release
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+
+
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
+<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
+<head>
+ <meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
+
+ <title>Shopping Cart Class &mdash; CodeIgniter 3.1.10 documentation</title>
+
+
+
+
+ <link rel="shortcut icon" href="../_static/ci-icon.ico"/>
+
+
+
+ <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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+
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+
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+ <link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" />
+
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+ <link rel="index" title="Index"
+ href="../genindex.html"/>
+ <link rel="search" title="Search" href="../search.html"/>
+ <link rel="top" title="CodeIgniter 3.1.10 documentation" href="../index.html"/>
+ <link rel="up" title="Libraries" href="index.html"/>
+ <link rel="next" title="Config Class" href="config.html"/>
+ <link rel="prev" title="Calendaring Class" href="calendar.html"/>
+
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+ <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script>
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+<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li>
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+<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>
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+<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>
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+<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 current"><a class="current reference internal" href="#">Shopping Cart Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="config.html">Config Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="email.html">Email Class</a></li>
+<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>
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+<li class="toctree-l2"><a class="reference internal" href="migration.html">Migrations Class</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="pagination.html">Pagination Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="parser.html">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>
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+<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>
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+<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>
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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/smiley_helper.html">Smiley Helper</a></li>
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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>
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+<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li>
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+<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>
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+<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 current"><a class="current reference internal" href="#">Shopping Cart Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="config.html">Config Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="email.html">Email Class</a></li>
+<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>
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+<li class="toctree-l2"><a class="reference internal" href="migration.html">Migrations Class</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="pagination.html">Pagination Class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="parser.html">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>
+ &nbsp;
+ </nav>
+
+ <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
+
+
+ <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
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+ <a href="../index.html">CodeIgniter</a>
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+ <li><a href="../index.html">Docs</a> &raquo;</li>
+
+ <li><a href="index.html">Libraries</a> &raquo;</li>
+
+ <li>Shopping Cart Class</li>
+ <li class="wy-breadcrumbs-aside">
+
+ </li>
+ <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==" />
+ </div>
+ </ul>
+ <hr/>
+</div>
+ <div role="main" class="document">
+
+ <div class="section" id="shopping-cart-class">
+<h1>Shopping Cart Class<a class="headerlink" href="#shopping-cart-class" title="Permalink to this headline">¶</a></h1>
+<p>The Cart Class permits items to be added to a session that stays active
+while a user is browsing your site. These items can be retrieved and
+displayed in a standard “shopping cart” format, allowing the user to
+update the quantity or remove items from the cart.</p>
+<div class="admonition important">
+<p class="first admonition-title">Important</p>
+<p class="last">The Cart library is DEPRECATED and should not be used.
+It is currently only kept for backwards compatibility.</p>
+</div>
+<p>Please note that the Cart Class ONLY provides the core “cart”
+functionality. It does not provide shipping, credit card authorization,
+or other processing components.</p>
+<div class="contents local topic" id="contents">
+<ul class="simple">
+<li><a class="reference internal" href="#using-the-cart-class" id="id1">Using the Cart Class</a><ul>
+<li><a class="reference internal" href="#initializing-the-shopping-cart-class" id="id2">Initializing the Shopping Cart Class</a></li>
+<li><a class="reference internal" href="#adding-an-item-to-the-cart" id="id3">Adding an Item to The Cart</a></li>
+<li><a class="reference internal" href="#adding-multiple-items-to-the-cart" id="id4">Adding Multiple Items to The Cart</a></li>
+<li><a class="reference internal" href="#displaying-the-cart" id="id5">Displaying the Cart</a></li>
+<li><a class="reference internal" href="#updating-the-cart" id="id6">Updating The Cart</a><ul>
+<li><a class="reference internal" href="#what-is-a-row-id" id="id7">What is a Row ID?</a></li>
+</ul>
+</li>
+</ul>
+</li>
+<li><a class="reference internal" href="#class-reference" id="id8">Class Reference</a></li>
+</ul>
+</div>
+<div class="custom-index container"></div><div class="section" id="using-the-cart-class">
+<h2><a class="toc-backref" href="#id1">Using the Cart Class</a><a class="headerlink" href="#using-the-cart-class" title="Permalink to this headline">¶</a></h2>
+<div class="section" id="initializing-the-shopping-cart-class">
+<h3><a class="toc-backref" href="#id2">Initializing the Shopping Cart Class</a><a class="headerlink" href="#initializing-the-shopping-cart-class" title="Permalink to this headline">¶</a></h3>
+<div class="admonition important">
+<p class="first admonition-title">Important</p>
+<p class="last">The Cart class utilizes CodeIgniter’s <a class="reference internal" href="sessions.html"><span class="doc">Session
+Class</span></a> to save the cart information to a database, so
+before using the Cart class you must set up a database table as
+indicated in the <a class="reference internal" href="sessions.html"><span class="doc">Session Documentation</span></a>, and set the
+session preferences in your application/config/config.php file to
+utilize a database.</p>
+</div>
+<p>To initialize the Shopping Cart Class in your controller constructor,
+use the <code class="docutils literal"><span class="pre">$this-&gt;load-&gt;library()</span></code> method:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$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;cart&#39;</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Once loaded, the Cart object will be available using:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span>
+</pre></div>
+</div>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">The Cart Class will load and initialize the Session Class
+automatically, so unless you are using sessions elsewhere in your
+application, you do not need to load the Session class.</p>
+</div>
+</div>
+<div class="section" id="adding-an-item-to-the-cart">
+<h3><a class="toc-backref" href="#id3">Adding an Item to The Cart</a><a class="headerlink" href="#adding-an-item-to-the-cart" title="Permalink to this headline">¶</a></h3>
+<p>To add an item to the shopping cart, simply pass an array with the
+product information to the <code class="docutils literal"><span class="pre">$this-&gt;cart-&gt;insert()</span></code> method, as shown
+below:</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;id&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;sku_123ABC&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;qty&#39;</span> <span class="o">=&gt;</span> <span class="mi">1</span><span class="p">,</span>
+ <span class="s1">&#39;price&#39;</span> <span class="o">=&gt;</span> <span class="mf">39.95</span><span class="p">,</span>
+ <span class="s1">&#39;name&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;T-Shirt&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;options&#39;</span> <span class="o">=&gt;</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;Size&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;L&#39;</span><span class="p">,</span> <span class="s1">&#39;Color&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Red&#39;</span><span class="p">)</span>
+<span class="p">);</span>
+
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">insert</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span>
+</pre></div>
+</div>
+<div class="admonition important">
+<p class="first admonition-title">Important</p>
+<p class="last">The first four array indexes above (id, qty, price, and
+name) are <strong>required</strong>. If you omit any of them the data will not be
+saved to the cart. The fifth index (options) is optional. It is intended
+to be used in cases where your product has options associated with it.
+Use an array for options, as shown above.</p>
+</div>
+<p>The five reserved indexes are:</p>
+<ul class="simple">
+<li><strong>id</strong> - Each product in your store must have a unique identifier.
+Typically this will be an “sku” or other such identifier.</li>
+<li><strong>qty</strong> - The quantity being purchased.</li>
+<li><strong>price</strong> - The price of the item.</li>
+<li><strong>name</strong> - The name of the item.</li>
+<li><strong>options</strong> - Any additional attributes that are needed to identify
+the product. These must be passed via an array.</li>
+</ul>
+<p>In addition to the five indexes above, there are two reserved words:
+rowid and subtotal. These are used internally by the Cart class, so
+please do NOT use those words as index names when inserting data into
+the cart.</p>
+<p>Your array may contain additional data. Anything you include in your
+array will be stored in the session. However, it is best to standardize
+your data among all your products in order to make displaying the
+information in a table easier.</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;id&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;sku_123ABC&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;qty&#39;</span> <span class="o">=&gt;</span> <span class="mi">1</span><span class="p">,</span>
+ <span class="s1">&#39;price&#39;</span> <span class="o">=&gt;</span> <span class="mf">39.95</span><span class="p">,</span>
+ <span class="s1">&#39;name&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;T-Shirt&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;coupon&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;XMAS-50OFF&#39;</span>
+<span class="p">);</span>
+
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">insert</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The <code class="docutils literal"><span class="pre">insert()</span></code> method will return the $rowid if you successfully insert a
+single item.</p>
+</div>
+<div class="section" id="adding-multiple-items-to-the-cart">
+<h3><a class="toc-backref" href="#id4">Adding Multiple Items to The Cart</a><a class="headerlink" href="#adding-multiple-items-to-the-cart" title="Permalink to this headline">¶</a></h3>
+<p>By using a multi-dimensional array, as shown below, it is possible to
+add multiple products to the cart in one action. This is useful in cases
+where you wish to allow people to select from among several items on the
+same page.</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;id&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;sku_123ABC&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;qty&#39;</span> <span class="o">=&gt;</span> <span class="mi">1</span><span class="p">,</span>
+ <span class="s1">&#39;price&#39;</span> <span class="o">=&gt;</span> <span class="mf">39.95</span><span class="p">,</span>
+ <span class="s1">&#39;name&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;T-Shirt&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;options&#39;</span> <span class="o">=&gt;</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;Size&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;L&#39;</span><span class="p">,</span> <span class="s1">&#39;Color&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Red&#39;</span><span class="p">)</span>
+ <span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;id&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;sku_567ZYX&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;qty&#39;</span> <span class="o">=&gt;</span> <span class="mi">1</span><span class="p">,</span>
+ <span class="s1">&#39;price&#39;</span> <span class="o">=&gt;</span> <span class="mf">9.95</span><span class="p">,</span>
+ <span class="s1">&#39;name&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Coffee Mug&#39;</span>
+ <span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;id&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;sku_965QRS&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;qty&#39;</span> <span class="o">=&gt;</span> <span class="mi">1</span><span class="p">,</span>
+ <span class="s1">&#39;price&#39;</span> <span class="o">=&gt;</span> <span class="mf">29.95</span><span class="p">,</span>
+ <span class="s1">&#39;name&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;Shot Glass&#39;</span>
+ <span class="p">)</span>
+<span class="p">);</span>
+
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">insert</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="displaying-the-cart">
+<h3><a class="toc-backref" href="#id5">Displaying the Cart</a><a class="headerlink" href="#displaying-the-cart" title="Permalink to this headline">¶</a></h3>
+<p>To display the cart you will create a <a class="reference internal" href="../general/views.html"><span class="doc">view
+file</span></a> with code similar to the one shown below.</p>
+<p>Please note that this example uses the <a class="reference internal" href="../helpers/form_helper.html"><span class="doc">form
+helper</span></a>.</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nx">form_open</span><span class="p">(</span><span class="s1">&#39;path/to/controller/update/method&#39;</span><span class="p">);</span> <span class="cp">?&gt;</span>
+
+<span class="p">&lt;</span><span class="nt">table</span> <span class="na">cellpadding</span><span class="o">=</span><span class="s">&quot;6&quot;</span> <span class="na">cellspacing</span><span class="o">=</span><span class="s">&quot;1&quot;</span> <span class="na">style</span><span class="o">=</span><span class="s">&quot;width:100%&quot;</span> <span class="na">border</span><span class="o">=</span><span class="s">&quot;0&quot;</span><span class="p">&gt;</span>
+
+<span class="p">&lt;</span><span class="nt">tr</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">th</span><span class="p">&gt;</span>QTY<span class="p">&lt;/</span><span class="nt">th</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">th</span><span class="p">&gt;</span>Item Description<span class="p">&lt;/</span><span class="nt">th</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">th</span> <span class="na">style</span><span class="o">=</span><span class="s">&quot;text-align:right&quot;</span><span class="p">&gt;</span>Item Price<span class="p">&lt;/</span><span class="nt">th</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">th</span> <span class="na">style</span><span class="o">=</span><span class="s">&quot;text-align:right&quot;</span><span class="p">&gt;</span>Sub-Total<span class="p">&lt;/</span><span class="nt">th</span><span class="p">&gt;</span>
+<span class="p">&lt;/</span><span class="nt">tr</span><span class="p">&gt;</span>
+
+<span class="cp">&lt;?php</span> <span class="nv">$i</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span> <span class="cp">?&gt;</span>
+
+<span class="cp">&lt;?php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">contents</span><span class="p">()</span> <span class="k">as</span> <span class="nv">$items</span><span class="p">)</span><span class="o">:</span> <span class="cp">?&gt;</span>
+
+ <span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nx">form_hidden</span><span class="p">(</span><span class="nv">$i</span><span class="o">.</span><span class="s1">&#39;[rowid]&#39;</span><span class="p">,</span> <span class="nv">$items</span><span class="p">[</span><span class="s1">&#39;rowid&#39;</span><span class="p">]);</span> <span class="cp">?&gt;</span>
+
+ <span class="p">&lt;</span><span class="nt">tr</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">td</span><span class="p">&gt;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nx">form_input</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;name&#39;</span> <span class="o">=&gt;</span> <span class="nv">$i</span><span class="o">.</span><span class="s1">&#39;[qty]&#39;</span><span class="p">,</span> <span class="s1">&#39;value&#39;</span> <span class="o">=&gt;</span> <span class="nv">$items</span><span class="p">[</span><span class="s1">&#39;qty&#39;</span><span class="p">],</span> <span class="s1">&#39;maxlength&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;3&#39;</span><span class="p">,</span> <span class="s1">&#39;size&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;5&#39;</span><span class="p">));</span> <span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">td</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">td</span><span class="p">&gt;</span>
+ <span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$items</span><span class="p">[</span><span class="s1">&#39;name&#39;</span><span class="p">];</span> <span class="cp">?&gt;</span>
+
+ <span class="cp">&lt;?php</span> <span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">has_options</span><span class="p">(</span><span class="nv">$items</span><span class="p">[</span><span class="s1">&#39;rowid&#39;</span><span class="p">])</span> <span class="o">==</span> <span class="k">TRUE</span><span class="p">)</span><span class="o">:</span> <span class="cp">?&gt;</span>
+
+ <span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;</span>
+ <span class="cp">&lt;?php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">product_options</span><span class="p">(</span><span class="nv">$items</span><span class="p">[</span><span class="s1">&#39;rowid&#39;</span><span class="p">])</span> <span class="k">as</span> <span class="nv">$option_name</span> <span class="o">=&gt;</span> <span class="nv">$option_value</span><span class="p">)</span><span class="o">:</span> <span class="cp">?&gt;</span>
+
+ <span class="p">&lt;</span><span class="nt">strong</span><span class="p">&gt;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$option_name</span><span class="p">;</span> <span class="cp">?&gt;</span>:<span class="p">&lt;/</span><span class="nt">strong</span><span class="p">&gt;</span> <span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$option_value</span><span class="p">;</span> <span class="cp">?&gt;</span><span class="p">&lt;</span><span class="nt">br</span> <span class="p">/&gt;</span>
+
+ <span class="cp">&lt;?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?&gt;</span>
+ <span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
+
+ <span class="cp">&lt;?php</span> <span class="k">endif</span><span class="p">;</span> <span class="cp">?&gt;</span>
+
+ <span class="p">&lt;/</span><span class="nt">td</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">td</span> <span class="na">style</span><span class="o">=</span><span class="s">&quot;text-align:right&quot;</span><span class="p">&gt;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">format_number</span><span class="p">(</span><span class="nv">$items</span><span class="p">[</span><span class="s1">&#39;price&#39;</span><span class="p">]);</span> <span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">td</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">td</span> <span class="na">style</span><span class="o">=</span><span class="s">&quot;text-align:right&quot;</span><span class="p">&gt;</span>$<span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">format_number</span><span class="p">(</span><span class="nv">$items</span><span class="p">[</span><span class="s1">&#39;subtotal&#39;</span><span class="p">]);</span> <span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">td</span><span class="p">&gt;</span>
+ <span class="p">&lt;/</span><span class="nt">tr</span><span class="p">&gt;</span>
+
+<span class="cp">&lt;?php</span> <span class="nv">$i</span><span class="o">++</span><span class="p">;</span> <span class="cp">?&gt;</span>
+
+<span class="cp">&lt;?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?&gt;</span>
+
+<span class="p">&lt;</span><span class="nt">tr</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">td</span> <span class="na">colspan</span><span class="o">=</span><span class="s">&quot;2&quot;</span><span class="p">&gt;</span> <span class="p">&lt;/</span><span class="nt">td</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">td</span> <span class="na">class</span><span class="o">=</span><span class="s">&quot;right&quot;</span><span class="p">&gt;&lt;</span><span class="nt">strong</span><span class="p">&gt;</span>Total<span class="p">&lt;/</span><span class="nt">strong</span><span class="p">&gt;&lt;/</span><span class="nt">td</span><span class="p">&gt;</span>
+ <span class="p">&lt;</span><span class="nt">td</span> <span class="na">class</span><span class="o">=</span><span class="s">&quot;right&quot;</span><span class="p">&gt;</span>$<span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">format_number</span><span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">total</span><span class="p">());</span> <span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">td</span><span class="p">&gt;</span>
+<span class="p">&lt;/</span><span class="nt">tr</span><span class="p">&gt;</span>
+
+<span class="p">&lt;/</span><span class="nt">table</span><span class="p">&gt;</span>
+
+<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nx">form_submit</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">,</span> <span class="s1">&#39;Update your Cart&#39;</span><span class="p">);</span> <span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="updating-the-cart">
+<h3><a class="toc-backref" href="#id6">Updating The Cart</a><a class="headerlink" href="#updating-the-cart" title="Permalink to this headline">¶</a></h3>
+<p>To update the information in your cart, you must pass an array
+containing the Row ID and one or more pre-defined properties to the
+<code class="docutils literal"><span class="pre">$this-&gt;cart-&gt;update()</span></code> method.</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">If the quantity is set to zero, the item will be removed from
+the cart.</p>
+</div>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;rowid&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;b99ccdf16028f015540f341130b6d8ec&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;qty&#39;</span> <span class="o">=&gt;</span> <span class="mi">3</span>
+<span class="p">);</span>
+
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">update</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span>
+
+<span class="c1">// Or a multi-dimensional array</span>
+
+<span class="nv">$data</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;rowid&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;b99ccdf16028f015540f341130b6d8ec&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;qty&#39;</span> <span class="o">=&gt;</span> <span class="mi">3</span>
+ <span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;rowid&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;xw82g9q3r495893iajdh473990rikw23&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;qty&#39;</span> <span class="o">=&gt;</span> <span class="mi">4</span>
+ <span class="p">),</span>
+ <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;rowid&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;fh4kdkkkaoe30njgoe92rkdkkobec333&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;qty&#39;</span> <span class="o">=&gt;</span> <span class="mi">2</span>
+ <span class="p">)</span>
+<span class="p">);</span>
+
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">update</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>You may also update any property you have previously defined when
+inserting the item such as options, price or other custom fields.</p>
+<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">&#39;rowid&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;b99ccdf16028f015540f341130b6d8ec&#39;</span><span class="p">,</span>
+ <span class="s1">&#39;qty&#39;</span> <span class="o">=&gt;</span> <span class="mi">1</span><span class="p">,</span>
+ <span class="s1">&#39;price&#39;</span> <span class="o">=&gt;</span> <span class="mf">49.95</span><span class="p">,</span>
+ <span class="s1">&#39;coupon&#39;</span> <span class="o">=&gt;</span> <span class="k">NULL</span>
+<span class="p">);</span>
+
+<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">update</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span>
+</pre></div>
+</div>
+<div class="section" id="what-is-a-row-id">
+<h4><a class="toc-backref" href="#id7">What is a Row ID?</a><a class="headerlink" href="#what-is-a-row-id" title="Permalink to this headline">¶</a></h4>
+<p>The row ID is a unique identifier that is generated by the cart code
+when an item is added to the cart. The reason a unique ID is created
+is so that identical products with different options can be managed
+by the cart.</p>
+<p>For example, let’s say someone buys two identical t-shirts (same product
+ID), but in different sizes. The product ID (and other attributes) will
+be identical for both sizes because it’s the same shirt. The only
+difference will be the size. The cart must therefore have a means of
+identifying this difference so that the two sizes of shirts can be
+managed independently. It does so by creating a unique “row ID” based on
+the product ID and any options associated with it.</p>
+<p>In nearly all cases, updating the cart will be something the user does
+via the “view cart” page, so as a developer, it is unlikely that you
+will ever have to concern yourself with the “row ID”, other than making
+sure your “view cart” page contains this information in a hidden form
+field, and making sure it gets passed to the <code class="docutils literal"><span class="pre">update()</span></code> method when
+the update form is submitted. Please examine the construction of the
+“view cart” page above for more information.</p>
+</div>
+</div>
+</div>
+<div class="section" id="class-reference">
+<h2><a class="toc-backref" href="#id8">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2>
+<dl class="class">
+<dt id="CI_Cart">
+<em class="property">class </em><code class="descname">CI_Cart</code><a class="headerlink" href="#CI_Cart" title="Permalink to this definition">¶</a></dt>
+<dd><dl class="attribute">
+<dt>
+<code class="descname">$product_id_rules = '.a-z0-9_-'</code></dt>
+<dd><p>These are the regular expression rules that we use to validate the product
+ID - alpha-numeric, dashes, underscores, or periods by default</p>
+</dd></dl>
+
+<dl class="attribute">
+<dt>
+<code class="descname">$product_name_rules = 'w -.:'</code></dt>
+<dd><p>These are the regular expression rules that we use to validate the product ID and product name - alpha-numeric, dashes, underscores, colons or periods by
+default</p>
+</dd></dl>
+
+<dl class="attribute">
+<dt>
+<code class="descname">$product_name_safe = TRUE</code></dt>
+<dd><p>Whether or not to only allow safe product names. Default TRUE.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Cart::insert">
+<code class="descname">insert</code><span class="sig-paren">(</span><span class="optional">[</span><em>$items = array()</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::insert" title="Permalink to this definition">¶</a></dt>
+<dd><table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>$items</strong> (<em>array</em>) – Items to insert into the cart</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
+</td>
+</tr>
+</tbody>
+</table>
+<p>Insert items into the cart and save it to the session table. Returns TRUE
+on success and FALSE on failure.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Cart::update">
+<code class="descname">update</code><span class="sig-paren">(</span><span class="optional">[</span><em>$items = array()</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::update" title="Permalink to this definition">¶</a></dt>
+<dd><table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>$items</strong> (<em>array</em>) – Items to update in the cart</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
+</td>
+</tr>
+</tbody>
+</table>
+<p>This method permits changing the properties of a given item.
+Typically it is called from the “view cart” page if a user makes changes
+to the quantity before checkout. That array must contain the rowid
+for each item.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Cart::remove">
+<code class="descname">remove</code><span class="sig-paren">(</span><em>$rowid</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::remove" title="Permalink to this definition">¶</a></dt>
+<dd><table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>$rowid</strong> (<em>int</em>) – ID of the item to remove from the cart</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
+</td>
+</tr>
+</tbody>
+</table>
+<p>Allows you to remove an item from the shopping cart by passing it the
+<code class="docutils literal"><span class="pre">$rowid</span></code>.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Cart::total">
+<code class="descname">total</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::total" title="Permalink to this definition">¶</a></dt>
+<dd><table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Total amount</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int</td>
+</tr>
+</tbody>
+</table>
+<p>Displays the total amount in the cart.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Cart::total_items">
+<code class="descname">total_items</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::total_items" title="Permalink to this definition">¶</a></dt>
+<dd><table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Total amount of items in the cart</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int</td>
+</tr>
+</tbody>
+</table>
+<p>Displays the total number of items in the cart.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Cart::contents">
+<code class="descname">contents</code><span class="sig-paren">(</span><span class="optional">[</span><em>$newest_first = FALSE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::contents" 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>$newest_first</strong> (<em>bool</em>) – Whether to order the array with newest items first</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An array of cart contents</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p>
+</td>
+</tr>
+</tbody>
+</table>
+<p>Returns an array containing everything in the cart. You can sort the
+order by which the array is returned by passing it TRUE where the contents
+will be sorted from newest to oldest, otherwise it is sorted from oldest
+to newest.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Cart::get_item">
+<code class="descname">get_item</code><span class="sig-paren">(</span><em>$row_id</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::get_item" 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>$row_id</strong> (<em>int</em>) – Row ID to retrieve</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Array of item data</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p>
+</td>
+</tr>
+</tbody>
+</table>
+<p>Returns an array containing data for the item matching the specified row
+ID, or FALSE if no such item exists.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Cart::has_options">
+<code class="descname">has_options</code><span class="sig-paren">(</span><em>$row_id = ''</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::has_options" 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>$row_id</strong> (<em>int</em>) – Row ID to inspect</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if options exist, FALSE otherwise</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
+</td>
+</tr>
+</tbody>
+</table>
+<p>Returns TRUE (boolean) if a particular row in the cart contains options.
+This method is designed to be used in a loop with <code class="docutils literal"><span class="pre">contents()</span></code>, since
+you must pass the rowid to this method, as shown in the Displaying
+the Cart example above.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Cart::product_options">
+<code class="descname">product_options</code><span class="sig-paren">(</span><span class="optional">[</span><em>$row_id = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::product_options" 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>$row_id</strong> (<em>int</em>) – Row ID</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Array of product options</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p>
+</td>
+</tr>
+</tbody>
+</table>
+<p>Returns an array of options for a particular product. This method is
+designed to be used in a loop with <code class="docutils literal"><span class="pre">contents()</span></code>, since you
+must pass the rowid to this method, as shown in the Displaying the
+Cart example above.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="CI_Cart::destroy">
+<code class="descname">destroy</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::destroy" 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">Return type:</th><td class="field-body">void</td>
+</tr>
+</tbody>
+</table>
+<p>Permits you to destroy the cart. This method will likely be called
+when you are finished processing the customer’s order.</p>
+</dd></dl>
+
+</dd></dl>
+
+</div>
+</div>
+
+
+ </div>
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+
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+
+ </div>
+
+
+ <hr/>
+
+ <div role="contentinfo">
+ <p>
+ &copy; Copyright 2014 - 2019, British Columbia Institute of Technology.
+ Last updated on Jan 16, 2019.
+ </p>
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