CodeIgniter in practice

1. CodeIgniter Practice
Jamshid Hashimi
Trainer, Cresco Solution
http://www.jamshidhashimi.com
jamshid@netlinks.af
@jamshidhashimi
ajamshidhashimi
Afghanistan Workforce
Development Program

2. Agenda
• Create an Application with CodeIgniter
• Common Functions
• URI Routing
• Error Handling
• Caching
• Profiling CodeIgniter Application

3. Create an Application with CodeIgniter
• Controllers
– Functions
• Views
– Template folder
• Helpers
– Handling tempaltes
• Libraries

4. DEMO

5. Common Functions
• CodeIgniter uses a few functions for its operation that
are globally defined, and are available to you at any
point. These do not require loading any libraries or
helpers.
– is_php('version_number')
– is_really_writable('path/to/file')
– config_item('item_key')
– show_error('message')
– show_404('page')
– log_message('level', 'message')
• error
• debug
• Info

6. DEMO

7. URI Routing
• Typically there is a one-to-one relationship
between a URL string and its corresponding
controller class/method.
$route['journals'] = "blogs";
$route['blog/joe'] = "blogs/users/34";
$route['product/(:any)'] = "catalog/product_lookup";
$route['product/(:num)'] = "catalog/product_lookup_by_id/$1”;

8. DEMO

9. Error Handling
• CodeIgniter lets you build error reporting into
your applications using the functions described
below. In addition, it has an error logging class
that permits error and debugging messages to be
saved as text files.
– show_error('message' [, int $status_code= 500 ] )
– show_404('page' [, 'log_error'])
– log_message('level', 'message')
• error
• debug
• Info

10. Caching
• CodeIgniter lets you cache your pages in order
to achieve maximum performance.
$this->output->cache(n);

11. DEMO

12. Profiling CodeIgniter 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.
$this->output->enable_profiler(TRUE);

13. Profiling CodeIgniter Application
• Each section of Profiler data can be enabled or
disabled by setting a corresponding config
variable to TRUE or FALSE.
• Override in Controller
$config['config'] = FALSE;
$config['queries'] = FALSE;
$sections = array(
'config' => TRUE,
'queries' => TRUE
);
$this->output->set_profiler_sections($sections);

14. DEMO

15. QUESTIONS?