<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Profiling Your Application : CodeIgniter User Guide</title> <style type='text/css' media='all'>@import url('../userguide.css');</style> <link rel='stylesheet' type='text/css' media='all' href='../userguide.css' /> <script type="text/javascript" src="../nav/nav.js"></script> <script type="text/javascript" src="../nav/prototype.lite.js"></script> <script type="text/javascript" src="../nav/moo.fx.js"></script> <script type="text/javascript" src="../nav/user_guide_menu.js"></script> <meta http-equiv='expires' content='-1' /> <meta http-equiv= 'pragma' content='no-cache' /> <meta name='robots' content='all' /> <meta name='author' content='ExpressionEngine Dev Team' /> <meta name='description' content='CodeIgniter User Guide' /> </head> <body> <!-- START NAVIGATION --> <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div> <div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div> <div id="masthead"> <table cellpadding="0" cellspacing="0" border="0" style="width:100%"> <tr> <td><h1>CodeIgniter User Guide Version 2.0.2</h1></td> <td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td> </tr> </table> </div> <!-- END NAVIGATION --> <!-- START BREADCRUMB --> <table cellpadding="0" cellspacing="0" border="0" style="width:100%"> <tr> <td id="breadcrumb"> <a href="http://codeigniter.com/">CodeIgniter Home</a> › <a href="../index.html">User Guide Home</a> › Profiling Your Application </td> <td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td> </tr> </table> <!-- END BREADCRUMB --> <br clear="all" /> <!-- START CONTENT --> <div id="content"> <h1>Profiling Your Application</h1> <p>The Profiler Class will display benchmark results, queries you have run, and $_POST data at the bottom of your pages. This information can be useful during development in order to help with debugging and optimization.</p> <h2>Initializing the Class</h2> <p class="important"><strong>Important:</strong> This class does <kbd>NOT</kbd> need to be initialized. It is loaded automatically by the <a href="../libraries/output.html">Output Class</a> if profiling is enabled as shown below.</p> <h2>Enabling the Profiler</h2> <p>To enable the profiler place the following function anywhere within your <a href="controllers.html">Controller</a> functions:</p> <code>$this->output->enable_profiler(TRUE);</code> <p>When enabled a report will be generated and inserted at the bottom of your pages.</p> <p>To disable the profiler you will use:</p> <code>$this->output->enable_profiler(FALSE);</code> <h2>Setting Benchmark Points</h2> <p>In order for the Profiler to compile and display your benchmark data you must name your mark points using specific syntax.</p> <p>Please read the information on setting Benchmark points in <a href="../libraries/benchmark.html">Benchmark Class</a> page.</p> <h2>Enabling and Disabling Profiler Sections</h2> <p>Each section of Profiler data can be enabled or disabled by setting a corresponding config variable to <var>TRUE</var> or <var>FALSE</var>. This can be done one of two ways. First, you can set application wide defaults with the <dfn>application/config/profiler.php</dfn> config file.</p> <code>$config['config'] = FALSE;<br /> $config['queries'] = FALSE;<br /></code> <p>In your controllers, you can override the defaults and config file values by calling the <kbd>set_profiler_sections()</kbd> method of the <a href="../libraries/output.html">Output class</a>:</p> <code>$sections = array(<br /> 'config' => TRUE,<br /> 'queries' => TRUE<br /> );<br /> <br /> $this->output->set_profiler_sections($sections);</code> <p>Available sections and the array key used to access them are described in the table below.</p> <table cellpadding="0" cellspacing="1" border="0" style="width:100%" class="tableborder"> <tr> <th>Key</th> <th>Description</th> <th>Default</th> </tr> <tr> <td class="td"><strong>benchmarks</strong></td> <td class="td">Elapsed time of Benchmark points and total execution time</td> <td class="td">TRUE</td> </tr> <tr> <td class="td"><strong>config</strong></td> <td class="td">CodeIgniter Config variables</td> <td class="td">TRUE</td> </tr> <tr> <td class="td"><strong>controller_info</strong></td> <td class="td">The Controller class and method requested</td> <td class="td">TRUE</td> </tr> <tr> <td class="td"><strong>get</strong></td> <td class="td">Any GET data passed in the request</td> <td class="td">TRUE</td> </tr> <tr> <td class="td"><strong>http_headers</strong></td> <td class="td">The HTTP headers for the current request</td> <td class="td">TRUE</td> </tr> <tr> <td class="td"><strong>memory_usage</strong></td> <td class="td">Amount of memory consumed by the current request, in bytes</td> <td class="td">TRUE</td> </tr> <tr> <td class="td"><strong>post</strong></td> <td class="td">Any POST data passed in the request</td> <td class="td">TRUE</td> </tr> <tr> <td class="td"><strong>queries</strong></td> <td class="td">Listing of all database queries executed, including execution time</td> <td class="td">TRUE</td> </tr> <tr> <td class="td"><strong>uri_string</strong></td> <td class="td">The URI of the current request</td> <td class="td">TRUE</td> </tr> <tr> <td class="td"><strong>query_toggle_count</strong></td> <td class="td">The number of queries after which the query block will default to hidden.</td> <td class="td">25</td> </tr> </table> </div> <!-- END CONTENT --> <div id="footer"> <p> Previous Topic: <a href="caching.html">Caching</a> · <a href="#top">Top of Page</a> · <a href="../index.html">User Guide Home</a> · Next Topic: <a href="managing_apps.html">Managing Applications</a> </p> <p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2011 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p> </div> </body> </html>