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  <div class="section" id="xml-helper">
<h1>XML Helper<a class="headerlink" href="#xml-helper" title="Permalink to this headline">¶</a></h1>
<p>The XML Helper file contains functions that assist in working with XML
data.</p>
<div class="contents local topic" id="contents">
<ul class="simple">
<li><a class="reference internal" href="#loading-this-helper" id="id1">Loading this Helper</a></li>
<li><a class="reference internal" href="#available-functions" id="id2">Available Functions</a></li>
</ul>
</div>
<div class="custom-index container"></div><div class="section" id="loading-this-helper">
<h2><a class="toc-backref" href="#id1">Loading this Helper</a><a class="headerlink" href="#loading-this-helper" title="Permalink to this headline">¶</a></h2>
<p>This helper is loaded using the following code</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">helper</span><span class="p">(</span><span class="s1">&#39;xml&#39;</span><span class="p">);</span>
</pre></div>
</div>
</div>
<div class="section" id="available-functions">
<h2><a class="toc-backref" href="#id2">Available Functions</a><a class="headerlink" href="#available-functions" title="Permalink to this headline">¶</a></h2>
<p>The following functions are available:</p>
<dl class="function">
<dt id="xml_convert">
<code class="descname">xml_convert</code><span class="sig-paren">(</span><em>$str</em><span class="optional">[</span>, <em>$protect_all = FALSE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#xml_convert" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>$str</strong> (<em>string</em>) – the text string to convert</li>
<li><strong>$protect_all</strong> (<em>bool</em>) – Whether to protect all content that looks like a potential entity instead of just numbered entities, e.g. &amp;foo;</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">XML-converted string</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
</td>
</tr>
</tbody>
</table>
<p>Takes a string as input and converts the following reserved XML
characters to entities:</p>
<blockquote>
<div><ul class="simple">
<li>Ampersands: &amp;</li>
<li>Less than and greater than characters: &lt; &gt;</li>
<li>Single and double quotes: ‘ “</li>
<li>Dashes: -</li>
</ul>
</div></blockquote>
<p>This function ignores ampersands if they are part of existing numbered
character entities, e.g. &amp;#123;. Example:</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$string</span> <span class="o">=</span> <span class="s1">&#39;&lt;p&gt;Here is a paragraph &amp; an entity (&amp;#123;).&lt;/p&gt;&#39;</span><span class="p">;</span>
<span class="nv">$string</span> <span class="o">=</span> <span class="nx">xml_convert</span><span class="p">(</span><span class="nv">$string</span><span class="p">);</span>
<span class="k">echo</span> <span class="nv">$string</span><span class="p">;</span>
</pre></div>
</div>
<p>outputs:</p>
<div class="highlight-html"><div class="highlight"><pre><span></span><span class="ni">&amp;lt;</span>p<span class="ni">&amp;gt;</span>Here is a paragraph <span class="ni">&amp;amp;</span> an entity (<span class="ni">&amp;#123;</span>).<span class="ni">&amp;lt;</span>/p<span class="ni">&amp;gt;</span>
</pre></div>
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