PHP projects uniformly set up 404 pages (including under the yii framework)

1. How to create a custom 404 page with Apache + PHP.

First deal with the situation where the file really does not exist. The method is to use Apache’s .htaccess definition. The

method is to create a new .htaccess and add: ErrorDocument 404 /404.php (/404. php is a custom 404 page).

2. Set up under the yii framework

When the requested page does not exist, yii will throw a CHttpException exception with the exception code 404. So how does yii handle this type of exception? There are three following Method:
1. Don’t do anything, yii will handle it by itself
When this type of exception is thrown, yii will render the errorxxx.php (error404.php) template file under framework/view/ by default
2. In protected Create a new errorxxx.php under /views/system, Yii will render the file
3. Configure the exception handler
Add the following configuration in the configuration file main.php, set the exception handling controller to site/error

'errorHandler'=>array(  
            // use 'site/error' action to display errors  
            'errorAction'=>'site/error',  
        ),  

Then in Add in SiteController.php, error controller:

public function actionError()  
    {  
        if($error=Yii::app()->errorHandler->error)  
        {print_r($error);  
            if(Yii::app()->request->isAjaxRequest)  
                echo $error['message'];  
            else  
                $this->render('error', $error);  
        }  
    }  

Finally add error.php template file under view/site/:

<?php  
$this->pageTitle=Yii::app()->name . ' - Error';  
$this->breadcrumbs=array(  
    'Error',  
);  
?>  
  
<h2>Error <?php echo $code; ?></h2>  
  
<div class="error">  
<?php echo CHtml::encode($message); ?>  
</div>  

The above introduces the unified setting of 404 pages for PHP projects (including under the Yii framework), including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.