How to make ThinkPHP display error messages

ThinkPHP is one of the most popular PHP frameworks in China. It comes from the thinkPHP team and is a tool currently widely used in enterprise-level development. It is not only easy to use, but also powerful and has a wide user base. However, sometimes when using ThinkPHP, we encounter incomprehensible error messages, which usually make us unable to start. In this article, we will introduce how to make ThinkPHP display error messages so that we can more easily find the problem.

1. Modify config.php

ThinkPHP’s error message is turned off by default, so we need to manually modify config.php to display the error message. We can set the following parameters in the config.php file:

$config = [
    'app_debug' => true,
    'show_error_msg' => true,
    'trace' => [
        'trace_exception' => true,
    ],
];

Among them, the app_debug parameter is set to true, which means turning on the DEBUG mode; the show_error_msg parameter is set to true, which means the error message is displayed; the trace_exception parameter in the trace parameter is set If true, it means displaying exception tracking information. In this way, when we encounter an error while using ThinkPHP, the error message will automatically be displayed on the page, and we can easily find the problem.

2. Using system functions

In addition to modifying parameters in config.php, ThinkPHP also provides some system functions to help us display error messages. For example:

// 抛出异常并显示错误信息
throw new \Exception('错误信息');

// 显示调试信息
var_dump($data);

// 记录日志并显示错误信息
Log::record('错误信息');
throw new \Exception('错误信息');

Using the above system functions, we can quickly display error messages in the code to quickly locate the problem. Especially using the throw new \Exception('error message') function, it will directly throw an exception and display the error message, so that we can quickly find the file and line number where the error is located.

3. Use third-party extensions

In the official documentation of ThinkPHP, some third-party debugging tools and error tracking extensions are also recommended, such as Xdebug, Kint, Whoops, etc. . These extensions can present error information more intuitively, making it easier for us to debug and locate. To use these extensions, you need to install and configure them in the framework. For details, please refer to the official documentation.

Summary

Through the above methods, it is not difficult to make ThinkPHP display error messages. During the development process, timely display of error information allows us to quickly find the problem and improve code development efficiency. Therefore, during the project development process, we should debug and display error messages in time to quickly locate and solve problems.

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