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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="custom-function-calls"> -<h1>Custom Function Calls<a class="headerlink" href="#custom-function-calls" title="Permalink to this headline">¶</a></h1> -<div class="section" id="this-db-call-function"> -<h2>$this->db->call_function();<a class="headerlink" href="#this-db-call-function" title="Permalink to this headline">¶</a></h2> -<p>This function enables you to call PHP database functions that are not -natively included in CodeIgniter, in a platform independent manner. For -example, let’s say you want to call the mysql_get_client_info() -function, which is <strong>not</strong> natively supported by CodeIgniter. You could -do so like this:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">call_function</span><span class="p">(</span><span class="s1">'get_client_info'</span><span class="p">);</span> -</pre></div> -</div> -<p>You must supply the name of the function, <strong>without</strong> the mysql_ -prefix, in the first parameter. The prefix is added automatically based -on which database driver is currently being used. This permits you to -run the same function on different database platforms. Obviously not all -function calls are identical between platforms, so there are limits to -how useful this function can be in terms of portability.</p> -<p>Any parameters needed by the function you are calling will be added to -the second parameter.</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">call_function</span><span class="p">(</span><span class="s1">'some_function'</span><span class="p">,</span> <span class="nv">$param1</span><span class="p">,</span> <span class="nv">$param2</span><span class="p">,</span> <span class="nx">etc</span><span class="o">..</span><span class="p">);</span> -</pre></div> -</div> -<p>Often, you will either need to supply a database connection ID or a -database result ID. The connection ID can be accessed using:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">conn_id</span><span class="p">;</span> -</pre></div> -</div> -<p>The result ID can be accessed from within your result object, like this:</p> -<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="s2">"SOME QUERY"</span><span class="p">);</span> - -<span class="nv">$query</span><span class="o">-></span><span class="na">result_id</span><span class="p">;</span> -</pre></div> -</div> -</div> -</div> - - - </div> - <footer> - - <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> - - <a href="caching.html" class="btn btn-neutral float-right" title="Database Caching Class">Next <span class="fa fa-arrow-circle-right"></span></a> - - - <a href="metadata.html" class="btn btn-neutral" title="Database Metadata"><span class="fa fa-arrow-circle-left"></span> Previous</a> - - </div> - - - <hr/> - - <div role="contentinfo"> - <p> - © Copyright 2014 - 2018, British Columbia Institute of Technology. - Last updated on Jun 12, 2018. - </p> - </div> - - Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. - -</footer> - </div> - </div> - - </section> - - </div> - - - - - - <script type="text/javascript"> - var DOCUMENTATION_OPTIONS = { - URL_ROOT:'../', - VERSION:'3.1.9', - COLLAPSE_INDEX:false, - FILE_SUFFIX:'.html', - HAS_SOURCE: false - }; - </script> - <script type="text/javascript" src="../_static/jquery.js"></script> - <script type="text/javascript" src="../_static/underscore.js"></script> - <script type="text/javascript" src="../_static/doctools.js"></script> - - - - - - <script type="text/javascript" src="../_static/js/theme.js"></script> - - - - - <script type="text/javascript"> - jQuery(function () { - SphinxRtdTheme.StickyNav.enable(); - }); - </script> - - -</body> -</html>
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