Profiling Your Application
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.
Initializing the Class
Important: This class does NOT need to be initialized. It is loaded automatically by the Output Class if profiling is enabled as shown below.
Enabling the Profiler
To enable the profiler place the following function anywhere within your Controller functions:
$this->output->enable_profiler(TRUE);
When enabled a report will be generated and inserted at the bottom of your pages.
To disable the profiler you will use:
$this->output->enable_profiler(FALSE);
Setting Benchmark Points
In order for the Profiler to compile and display your benchmark data you must name your mark points using specific syntax.
Please read the information on setting Benchmark points in Benchmark Class page.
Enabling and Disabling Profiler Sections
Each section of Profiler data can be enabled or disabled by setting a corresponding config variable to TRUE or FALSE. This can be done one of two ways. First, you can set application wide defaults with the application/config/profiler.php config file.
$config['config'] = FALSE;
$config['queries'] = FALSE;
In your controllers, you can override the defaults and config file values by calling the set_profiler_sections() method of the Output class:
$sections = array(
'config' => TRUE,
'queries' => TRUE
);
$this->output->set_profiler_sections($sections);
Available sections and the array key used to access them are described in the table below.
| Key | Description | Default |
|---|---|---|
| benchmarks | Elapsed time of Benchmark points and total execution time | TRUE |
| config | CodeIgniter Config variables | TRUE |
| controller_info | The Controller class and method requested | TRUE |
| get | Any GET data passed in the request | TRUE |
| http_headers | The HTTP headers for the current request | TRUE |
| memory_usage | Amount of memory consumed by the current request, in bytes | TRUE |
| post | Any POST data passed in the request | TRUE |
| queries | Listing of all database queries executed, including execution time | TRUE |
| uri_string | The URI of the current request | TRUE |
| session_data | Data stored in current session | TRUE |
| query_toggle_count | The number of queries after which the query block will default to hidden. | 25 |