Information about how to handle errors in thinkphp5

Error handling mechanism

ThinkPHP5 provides a very complete error handling mechanism, which we can use to conveniently handle general errors and system error messages. For example, error messages include 404 page not found error, 500 server internal error, and 503 service temporarily unavailable when the website application is running. HTTP status codes can be used to identify error messages and manage them in detail based on specific business needs.

Furthermore, ThinkPHP5 provides a verification code function that can prevent malicious clients from attacking our website applications and make the applications more secure and reliable. It also comes with a vulnerability management tool that can easily handle error messages found during R&D and testing.

Create error page

We can use custom error pages to present more friendly error messages in the ThinkPHP5 framework. We only need to add the necessary processing code to the customized error page. Here are the steps on how to create a custom error page:

1. Create a folder named "exception" in the root directory of our application;

2. Create a class named "Handle" in this folder;

3. Handle error information and exception information code.

The first and second steps have been completed. Now we come to the third step, processing error information and exception information.

Handling error information and exception information

In the ThinkPHP5 framework, we can use the "render" method in the base class "think\exception\Handle" to handle exception information . You can use this method to return an error page, for example:

use think\exception\HttpException;
use think\exception\ValidateException;
use think\Response;

class Handle extends think\exception\Handle
{
    public function render(Exception $e): Response
    {
        if ($e instanceof HttpException && $this->isAjax()) {
            $data = [
                'msg'   => $e->getMessage(),
                'code'  => $e->getStatusCode(),
            ];
            return json($data, $e->getStatusCode());
        }
        if ($e instanceof ValidateException) {
            return json($e->getError(), 422);
        }
        // 其他错误交给系统处理
        return parent::render($e);
    }
}

In the above code, we define a method named "render", whose function is to handle the exception information based on the passed exception information parameters. A condition for returning a JSON response is that the passed exception is an HttpException and a validation exception. If not, the exception is passed to the frontend response and the page is returned using the parent class default.

We provide an easy way for you to quickly create and work with custom error pages. This is exactly why we think ThinkPHP5 is one of the best PHP frameworks and provides programmers with powerful and easy development tools.

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