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59 <h1>Profiling Your Application</h1>
61 <p>The Profiler Class will display benchmark results, queries you have run, and $_POST data at the bottom of your pages.
62 This information can be useful during development in order to help with debugging and optimization.</p>
65 <h2>Initializing the Class</h2>
67 <p class="important"><strong>Important:</strong> This class does <kbd>NOT</kbd> need to be initialized. It is loaded automatically by the
68 <a href="../libraries/output.html">Output Class</a> if profiling is enabled as shown below.</p>
70 <h2>Enabling the Profiler</h2>
72 <p>To enable the profiler place the following function anywhere within your <a href="controllers.html">Controller</a> functions:</p>
73 <code>$this->output->enable_profiler(TRUE);</code>
75 <p>When enabled a report will be generated and inserted at the bottom of your pages.</p>
77 <p>To disable the profiler you will use:</p>
78 <code>$this->output->enable_profiler(FALSE);</code>
81 <h2>Setting Benchmark Points</h2>
83 <p>In order for the Profiler to compile and display your benchmark data you must name your mark points using specific syntax.</p>
85 <p>Please read the information on setting Benchmark points in <a href="../libraries/benchmark.html">Benchmark Class</a> page.</p>
88 <h2>Enabling and Disabling Profiler Sections</h2>
90 <p>Each section of Profiler data can be enabled or disabled by setting a corresponding config variable to <var>TRUE</var> or <var>FALSE</var>. This can be done one of two ways. First, you can set application wide defaults with the <dfn>application/config/profiler.php</dfn> config file.</p>
92 <code>$config['config'] = FALSE;<br />
93 $config['queries'] = FALSE;<br /></code>
95 <p>In your controllers, you can override the defaults and config file values by calling the <kbd>set_profiler_sections()</kbd> method of the <a href="../libraries/output.html">Output class</a>:</p>
97 <code>$sections = array(<br />
98 'config' => TRUE,<br />
99 'queries' => TRUE<br />
100 );<br />
102 $this->output->set_profiler_sections($sections);</code>
104 <p>Available sections and the array key used to access them are described in the table below.</p>
106 <table cellpadding="0" cellspacing="1" border="0" style="width:100%" class="tableborder">
113 <td class="td"><strong>benchmarks</strong></td>
114 <td class="td">Elapsed time of Benchmark points and total execution time</td>
115 <td class="td">TRUE</td>
118 <td class="td"><strong>config</strong></td>
119 <td class="td">CodeIgniter Config variables</td>
120 <td class="td">TRUE</td>
123 <td class="td"><strong>controller_info</strong></td>
124 <td class="td">The Controller class and method requested</td>
125 <td class="td">TRUE</td>
128 <td class="td"><strong>get</strong></td>
129 <td class="td">Any GET data passed in the request</td>
130 <td class="td">TRUE</td>
133 <td class="td"><strong>http_headers</strong></td>
134 <td class="td">The HTTP headers for the current request</td>
135 <td class="td">TRUE</td>
138 <td class="td"><strong>memory_usage</strong></td>
139 <td class="td">Amount of memory consumed by the current request, in bytes</td>
140 <td class="td">TRUE</td>
143 <td class="td"><strong>post</strong></td>
144 <td class="td">Any POST data passed in the request</td>
145 <td class="td">TRUE</td>
148 <td class="td"><strong>queries</strong></td>
149 <td class="td">Listing of all database queries executed, including execution time</td>
150 <td class="td">TRUE</td>
153 <td class="td"><strong>uri_string</strong></td>
154 <td class="td">The URI of the current request</td>
155 <td class="td">TRUE</td>
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