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- <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 &#8220;shopping cart&#8221; 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 &#8220;cart&#8221;
-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&#8217;s <a class="reference internal" href="sessions.html"><em>Session
-Class</em></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"><em>Session Documentation</em></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 <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;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">$this</span><span class="o">-&gt;</span><span class="na">cart</span>
-</pre></div>
-</div>
-<div class="admonition note">
-<p class="first admonition-title">Note</p>
-<p class="last">The Cart Class will load and initialize the Session Class
-automatically, so unless you are using sessions elsewhere in your
-application, you do not need to load the Session class.</p>
-</div>
-</div>
-<div class="section" id="adding-an-item-to-the-cart">
-<h3><a class="toc-backref" href="#id3">Adding an Item to The Cart</a><a class="headerlink" href="#adding-an-item-to-the-cart" title="Permalink to this headline">¶</a></h3>
-<p>To add an item to the shopping cart, simply pass an array with the
-product information to the <tt class="docutils literal"><span class="pre">$this-&gt;cart-&gt;insert()</span></tt> 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">$data</span><span class="p">);</span>
-</pre></div>
-</div>
-<div class="admonition important">
-<p class="first admonition-title">Important</p>
-<p class="last">The first four array indexes above (id, qty, price, and
-name) are <strong>required</strong>. If you omit any of them the data will not be
-saved to the cart. The fifth index (options) is optional. It is intended
-to be used in cases where your product has options associated with it.
-Use an array for options, as shown above.</p>
-</div>
-<p>The five reserved indexes are:</p>
-<ul class="simple">
-<li><strong>id</strong> - Each product in your store must have a unique identifier.
-Typically this will be an &#8220;sku&#8221; or other such identifier.</li>
-<li><strong>qty</strong> - The quantity being purchased.</li>
-<li><strong>price</strong> - The price of the item.</li>
-<li><strong>name</strong> - The name of the item.</li>
-<li><strong>options</strong> - Any additional attributes that are needed to identify
-the product. These must be passed via an array.</li>
-</ul>
-<p>In addition to the five indexes above, there are two reserved words:
-rowid and subtotal. These are used internally by the Cart class, so
-please do NOT use those words as index names when inserting data into
-the cart.</p>
-<p>Your array may contain additional data. Anything you include in your
-array will be stored in the session. However, it is best to standardize
-your data among all your products in order to make displaying the
-information in a table easier.</p>
-<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$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 <tt class="docutils literal"><span class="pre">insert()</span></tt> 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"><em>view
-file</em></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"><em>form
-helper</em></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">$this</span><span class="o">-&gt;</span><span class="na">cart</span><span class="o">-&gt;</span><span class="na">total</span><span class="p">());</span> <span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">td</span><span class="p">&gt;</span>
-<span class="p">&lt;/</span><span class="nt">tr</span><span class="p">&gt;</span>
-
-<span class="p">&lt;/</span><span class="nt">table</span><span class="p">&gt;</span>
-
-<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nx">form_submit</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">,</span> <span class="s1">&#39;Update your Cart&#39;</span><span class="p">);</span> <span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
-</pre></div>
-</div>
-</div>
-<div class="section" id="updating-the-cart">
-<h3><a class="toc-backref" href="#id6">Updating The Cart</a><a class="headerlink" href="#updating-the-cart" title="Permalink to this headline">¶</a></h3>
-<p>To update the information in your cart, you must pass an array
-containing the Row ID and one or more pre-defined properties to the
-<tt class="docutils literal"><span class="pre">$this-&gt;cart-&gt;update()</span></tt> 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&#8217;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&#8217;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 &#8220;row ID&#8221; 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 &#8220;view cart&#8221; page, so as a developer, it is unlikely that you
-will ever have to concern yourself with the &#8220;row ID&#8221;, other than making
-sure your &#8220;view cart&#8221; page contains this information in a hidden form
-field, and making sure it gets passed to the <tt class="docutils literal"><span class="pre">update()</span></tt> method when
-the update form is submitted. Please examine the construction of the
-&#8220;view cart&#8221; 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><tt class="descname">CI_Cart</tt><a class="headerlink" href="#CI_Cart" title="Permalink to this definition">¶</a></dt>
-<dd><dl class="attribute">
-<dt>
-<tt class="descname">$product_id_rules = '.a-z0-9_-'</tt></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>
-<tt class="descname">$product_name_rules = 'w -.:'</tt></dt>
-<dd><p>These are the regular expression rules that we use to validate the product ID and product name - alpha-numeric, dashes, underscores, colons or periods by
-default</p>
-</dd></dl>
-
-<dl class="attribute">
-<dt>
-<tt class="descname">$product_name_safe = TRUE</tt></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">
-<tt class="descname">insert</tt><big>(</big><span class="optional">[</span><em>$items = array()</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_Cart::insert" title="Permalink to this definition">¶</a></dt>
-<dd><table class="docutils field-list" frame="void" rules="none">
-<col class="field-name" />
-<col class="field-body" />
-<tbody valign="top">
-<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
-<li><strong>$items</strong> (<em>array</em>) &#8211; 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">
-<tt class="descname">update</tt><big>(</big><span class="optional">[</span><em>$items = array()</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#CI_Cart::update" title="Permalink to this definition">¶</a></dt>
-<dd><table class="docutils field-list" frame="void" rules="none">
-<col class="field-name" />
-<col class="field-body" />
-<tbody valign="top">
-<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
-<li><strong>$items</strong> (<em>array</em>) &#8211; 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 &#8220;view cart&#8221; 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">
-<tt class="descname">remove</tt><big>(</big><em>$rowid</em><big>)</big><a class="headerlink" href="#CI_Cart::remove" title="Permalink to this definition">¶</a></dt>
-<dd><table class="docutils field-list" frame="void" rules="none">
-<col class="field-name" />
-<col class="field-body" />
-<tbody valign="top">
-<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
-<li><strong>$rowid</strong> (<em>int</em>) &#8211; 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
-<tt class="docutils literal"><span class="pre">$rowid</span></tt>.</p>
-</dd></dl>
-
-<dl class="method">
-<dt id="CI_Cart::total">
-<tt class="descname">total</tt><big>(</big><big>)</big><a class="headerlink" href="#CI_Cart::total" title="Permalink to this definition">¶</a></dt>
-<dd><table class="docutils field-list" frame="void" rules="none">
-<col class="field-name" />
-<col class="field-body" />
-<tbody valign="top">
-<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Total amount</td>
-</tr>
-<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int</td>
-</tr>
-</tbody>
-</table>
-<p>Displays the total amount in the cart.</p>
-</dd></dl>
-
-<dl class="method">
-<dt id="CI_Cart::total_items">
-<tt class="descname">total_items</tt><big>(</big><big>)</big><a class="headerlink" href="#CI_Cart::total_items" title="Permalink to this definition">¶</a></dt>
-<dd><table class="docutils field-list" frame="void" rules="none">
-<col class="field-name" />
-<col class="field-body" />
-<tbody valign="top">
-<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Total amount of items in the cart</td>
-</tr>
-<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int</td>
-</tr>
-</tbody>
-</table>
-<p>Displays the total number of items in the cart.</p>
-</dd></dl>
-
-<dl class="method">
-<dt id="CI_Cart::contents">
-<tt class="descname">contents</tt><big>(</big><span class="optional">[</span><em>$newest_first = FALSE</em><span class="optional">]</span><big>)</big><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>$newest_first</strong> (<em>bool</em>) &#8211; Whether to order the array with newest items first</li>
-</ul>
-</td>
-</tr>
-<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An array of cart contents</p>
-</td>
-</tr>
-<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p>
-</td>
-</tr>
-</tbody>
-</table>
-<p>Returns an array containing everything in the cart. You can sort the
-order by which the array is returned by passing it TRUE where the contents
-will be sorted from newest to oldest, otherwise it is sorted from oldest
-to newest.</p>
-</dd></dl>
-
-<dl class="method">
-<dt id="CI_Cart::get_item">
-<tt class="descname">get_item</tt><big>(</big><em>$row_id</em><big>)</big><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>$row_id</strong> (<em>int</em>) &#8211; Row ID to retrieve</li>
-</ul>
-</td>
-</tr>
-<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Array of item data</p>
-</td>
-</tr>
-<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p>
-</td>
-</tr>
-</tbody>
-</table>
-<p>Returns an array containing data for the item matching the specified row
-ID, or FALSE if no such item exists.</p>
-</dd></dl>
-
-<dl class="method">
-<dt id="CI_Cart::has_options">
-<tt class="descname">has_options</tt><big>(</big><em>$row_id = ''</em><big>)</big><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>$row_id</strong> (<em>int</em>) &#8211; Row ID to inspect</li>
-</ul>
-</td>
-</tr>
-<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if options exist, FALSE otherwise</p>
-</td>
-</tr>
-<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
-</td>
-</tr>
-</tbody>
-</table>
-<p>Returns TRUE (boolean) if a particular row in the cart contains options.
-This method is designed to be used in a loop with <tt class="docutils literal"><span class="pre">contents()</span></tt>, since
-you must pass the rowid to this method, as shown in the Displaying
-the Cart example above.</p>
-</dd></dl>
-
-<dl class="method">
-<dt id="CI_Cart::product_options">
-<tt class="descname">product_options</tt><big>(</big><span class="optional">[</span><em>$row_id = ''</em><span class="optional">]</span><big>)</big><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>) &#8211; 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 <tt class="docutils literal"><span class="pre">contents()</span></tt>, 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">
-<tt class="descname">destroy</tt><big>(</big><big>)</big><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&#8217;s order.</p>
-</dd></dl>
-
-</dd></dl>
-
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