CodeIgniter自动加载软件包

Question

I want to instantiate a class every time a page is loaded in CodeIgniter.

It looks like the /application/config/autoload.php is the place to do this. Is that correct?

I added this line to the package's autoload:

$autoload['packages'] = array('/application/third_party/Autoload.php');

Now I need this code to be executed on every page, where can I make this happen?

$bugsnag = new Bugsnag_Client("YOUR-API-KEY-HERE");
set_error_handler(array($bugsnag, "errorHandler"));
set_exception_handler(array($bugsnag, "exceptionHandler"));

Answer 1

To auto load a package (according to CI ), you should put the package path/name in following array, like

$autoload['packages'] = array(APPPATH.'third_party', '/usr/local/shared');

But it doesn't execute any code automatically but makes your package available to use without explicitly loading it.

To make some code execute every time, you can put that code in your base controller's constructor function. Also, you can put the code in your config.php file. If you have an extended base controller, like application/core/MY_Controller.php

class MY_Controller extends CI_Controller {
    //
}

Then you can use it's constructor function like

class MY_Controller extends CI_Controller {
    function __construct()
{
    parent::__construct();
    $this->bugsnag = new Bugsnag_Client("YOUR-API-KEY-HERE");
            set_error_handler(array($bugsnag, "errorHandler"));
            set_exception_handler(array($bugsnag, "exceptionHandler"));
}
}

Rest of your controllers will use/extend MY_Controller instead of CI_Controller .

But you can also use a hook in this case (to register custom exception handlers), in application/config/hooks.php file, put following code

$hook['pre_controller'][] = array(
    'class'    => 'CustomExceptionHook',
    'function' => 'SetExceptionHandlers',
    'filename' => 'CustomExceptionHook.php',
    'filepath' => 'hooks'
);

Create a class in application/hooks/CustomExceptionHook.php folder, like

class CustomExceptionHook
{
    public function SetExceptionHandlers()
    {
        // add package path (if not auto-loaded)
        $this->load->add_package_path(APPPATH.'third_party/package_folder/');
        // load package (if not auto-loaded)
        $this->load->library('Bugsnag_Client');

        set_error_handler(array($this->Bugsnag_Client, "errorHandler"));
        set_exception_handler(array($this->Bugsnag_Client, "exceptionHandler"));
    }
}

Answer 2

Well let me explain it how you can do it.
As you have autoloaded the package its fine now you need to do this.
Create a MY_Controller in application/core/ directory.

Class MY_Controller Extends CI_Controller{

    public $bugsnag =   '';
    public function __construct(){

    parent::__construct();
        $this->bugsnag = new Bugsnag_Client("YOUR-API-KEY-HERE");
        set_error_handler(array($bugsnag, "errorHandler"));
        set_exception_handler(array($bugsnag, "exceptionHandler"));     
    }
}

Note $this->bugsnag contains the object now. When you need to access it in any page you can simply do it like this by extending the parent class

Class Test Extends MY_Controller{

    public function __construct(){
        parent::__construct();
    }

    public function index(){
        echo '<pre>';
        print_R($this->bugsnag);
    }
}

Answer 3

Here is a version of MY_Controller.php This is using BugSnag via composer install

Using this method exposes the $this->_bugsnag variable to the entire CI System

class MY_Controller extends CI_Controller {

    // Application Version
    public $_app_version;

    // Bugsnag
    public $_bugsnag = NULL;

    /**
     * Constructor
     */
    public function __construct() {

        parent::__construct();

        // Dont print errors to screen
        ini_set('display_errors', 0);

        // Load configs
        $this->load->config('appversion');
        $this->load->config('bugsnag');
        $this->_app_version = $this->config->item('app_version');

        // INIT: bugsnag
        // https://docs.bugsnag.com/platforms/php/other/configuration-options/
        $this->_bugsnag = Bugsnag\Client::make( $this->config->item('bugsnagAPIKey') );
        $this->_bugsnag->setErrorReportingLevel( E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED );
        $this->_bugsnag->setNotifyReleaseStages( ['developement', 'testing', 'production'] );
        $this->_bugsnag->setReleaseStage( ENVIRONMENT );
        $this->_bugsnag->setAppType( 'API Server' );
        $this->_bugsnag->setAppVersion( $this->_app_version );
        $this->_bugsnag->setHostname( $_SERVER['HTTP_HOST'] );
        $this->_bugsnag->setProjectRoot( realpath(APPPATH) );
        $this->_bugsnag->setFilters( ['password'] );
        Bugsnag\Handler::register( $this->_bugsnag );

        // Load Helpers

        // Load Libraries

        // Load Languages
    }
}

You can now access the BugSnag methods like this.

$this->_bugsnag->leaveBreadcrumb( 'Hello' );
$this->_bugsnag->notifyException( $e );

Answer 4

Create a MY_Controller & inherit all your controllers off that. You can find more on this by Googling "MY_Controller"