CodeIgniter Practice
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This document provides an overview and demonstration of common CodeIgniter functions and features, including: - Creating an application with controllers, views, helpers, and libraries - Common functions like is_php() and config_item() - URI routing to map URLs to controllers/methods - Error handling with functions like show_error() and log_message() - Caching pages for improved performance - Profiling applications to display benchmarks, queries, and POST data for debugging Code samples and demos are provided to illustrate these CodeIgniter features.
![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”;](https://image.slidesharecdn.com/codeigniterpractice-130701020555-phpapp02/85/CodeIgniter-Practice-7-320.jpg)
![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](https://image.slidesharecdn.com/codeigniterpractice-130701020555-phpapp02/85/CodeIgniter-Practice-9-320.jpg)
![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);](https://image.slidesharecdn.com/codeigniterpractice-130701020555-phpapp02/85/CodeIgniter-Practice-13-320.jpg)
CodeIgniter Practice
- 1. CodeIgniter Practice Jamshid Hashimi Trainer, Cresco Solution http://www.jamshidhashimi.com [email protected] @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?