176 行
无行尾
6.8 KiB
HTML
176 行
无行尾
6.8 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>Profiling Your Application : CodeIgniter User Guide</title>
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<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>
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<div id="masthead">
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td><h1>CodeIgniter User Guide Version 2.0.1</h1></td>
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<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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<td id="breadcrumb">
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<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
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<a href="../index.html">User Guide Home</a> ›
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Profiling Your Application
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</td>
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<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>
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<!-- START CONTENT -->
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<div id="content">
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<h1>Profiling Your Application</h1>
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<p>The Profiler Class will display benchmark results, queries you have run, and $_POST data at the bottom of your pages.
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This information can be useful during development in order to help with debugging and optimization.</p>
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<h2>Initializing the Class</h2>
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<p class="important"><strong>Important:</strong> This class does <kbd>NOT</kbd> need to be initialized. It is loaded automatically by the
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<a href="../libraries/output.html">Output Class</a> if profiling is enabled as shown below.</p>
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<h2>Enabling the Profiler</h2>
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<p>To enable the profiler place the following function anywhere within your <a href="controllers.html">Controller</a> functions:</p>
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<code>$this->output->enable_profiler(TRUE);</code>
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<p>When enabled a report will be generated and inserted at the bottom of your pages.</p>
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<p>To disable the profiler you will use:</p>
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<code>$this->output->enable_profiler(FALSE);</code>
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<h2>Setting Benchmark Points</h2>
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<p>In order for the Profiler to compile and display your benchmark data you must name your mark points using specific syntax.</p>
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<p>Please read the information on setting Benchmark points in <a href="../libraries/benchmark.html">Benchmark Class</a> page.</p>
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<h2>Enabling and Disabling Profiler Sections</h2>
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<p>Each section of Profiler data can be enabled or disabled by setting a corresponding config variable to <var>TRUE</var> or <var>FALSE</var>. This can be done one of two ways. First, you can set application wide defaults with the <dfn>application/config/profiler.php</dfn> config file.</p>
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<code>$config['config'] = FALSE;<br />
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$config['queries'] = FALSE;<br /></code>
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<p>In your controllers, you can override the defaults and config file values by calling the <kbd>set_profiler_sections()</kbd> method of the <a href="../libraries/output.html">Output class</a>:</p>
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<code>$sections = array(<br />
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'config' => TRUE,<br />
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'queries' => TRUE<br />
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);<br />
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<br />
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$this->output->set_profiler_sections($sections);</code>
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<p>Available sections and the array key used to access them are described in the table below.</p>
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<table cellpadding="0" cellspacing="1" border="0" style="width:100%" class="tableborder">
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<tr>
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<th>Key</th>
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<th>Description</th>
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<th>Default</th>
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</tr><tr>
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<td class="td"><strong>benchmarks</strong></td>
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<td class="td">Elapsed time of Benchmark points and total execution time</td>
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<td class="td">TRUE</td>
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</tr><tr>
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<td class="td"><strong>config</strong></td>
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<td class="td">CodeIgniter Config variables</td>
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<td class="td">TRUE</td>
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</tr><tr>
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<td class="td"><strong>controller_info</strong></td>
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<td class="td">The Controller class and method requested</td>
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<td class="td">TRUE</td>
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</tr><tr>
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<td class="td"><strong>get</strong></td>
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<td class="td">Any GET data passed in the request</td>
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<td class="td">TRUE</td>
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</tr><tr>
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<td class="td"><strong>http_headers</strong></td>
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<td class="td">The HTTP headers for the current request</td>
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<td class="td">TRUE</td>
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</tr><tr>
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<td class="td"><strong>memory_usage</strong></td>
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<td class="td">Amount of memory consumed by the current request, in bytes</td>
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<td class="td">TRUE</td>
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</tr><tr>
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<td class="td"><strong>post</strong></td>
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<td class="td">Any POST data passed in the request</td>
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<td class="td">TRUE</td>
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</tr><tr>
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<td class="td"><strong>queries</strong></td>
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<td class="td">Listing of all database queries executed, including execution time</td>
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<td class="td">TRUE</td>
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</tr><tr>
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<td class="td"><strong>uri_string</strong></td>
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<td class="td">The URI of the current request</td>
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<td class="td">TRUE</td>
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</tr><tr>
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</table>
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</div>
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<!-- END CONTENT -->
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<div id="footer">
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<p>
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Previous Topic: <a href="caching.html">Caching</a>
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·
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<a href="#top">Top of Page</a> ·
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<a href="../index.html">User Guide Home</a> ·
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Next Topic: <a href="managing_apps.html">Managing Applications</a>
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<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2011 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
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