CodeIgniter's Hooks feature provides a means to tap into and modify the inner workings of the framework without hacking the core files.
CodeIgniter's Hooks feature provides a means to tap into and modify the inner workings of the framework without hacking the core files.
When CodeIgniter runs it follows a specific execution process, diagramed in the Application Flow page.
There may be instances, however, where you'd like to cause some action to take place at a particular stage in the execution process. For example, you might want to run a script right before your controllers get loaded, or right after, or you might want to trigger one of your own scripts in some other location.
Source: CodeIgniter
