ThinkPHP6 logging and debugging skills: quickly locate problems

ThinkPHP6 logging and debugging skills: quickly locate problems

Introduction:
In the development process, troubleshooting and solving problems is an inevitable link. Logging and debugging are one of our important tools for locating and solving problems. ThinkPHP6 provides rich logging and debugging functions. This article will introduce how to use these functions to quickly locate problems and speed up the development process.

1. Logging function

1. Configuration log
   In the configuration file config/app.php of ThinkPHP6, we can find the configuration of the log Item'log'. By default, the logging function is turned on, and the log files exist in the runtime/log directory. If you need to modify the storage location of the log, you can modify the 'log_path' configuration item.
2. Logging
   ThinkPHP6 provides a wealth of logging methods, and you can choose different logging levels according to your needs. The following are some commonly used logging methods:

2.1 info method

    hinkacadeLog::info('This is an info log');

2.2 error method

    hinkacadeLog::error('This is an error log');

2.3 warning method

    hinkacadeLog::warning('This is a warning log');

2.4 debug Method

    hinkacadeLog::debug('This is a debug log');

2.5 log method

    hinkacadeLog::log('This is a custom log', 'custom');

3. Access log
   Through the above configuration and recording operations, we can find the corresponding one in the runtime/log directory log file. Based on the date and record level, we can quickly locate the specified log content for troubleshooting and analysis.

2. Debugging skills

1. Debug output
   ThinkPHP6 provides many convenient debugging output methods that can help us quickly locate problems. The following are some commonly used debugging output methods:

1.1 dump method

dump($variable);

1.2 print_r method

print_r($array);

1.3 var_dump method

var_dump($variable);

1.4 trace Method

    hinkacadeLog::trace('This is a trace log');

2. Exception handling
   ThinkPHP6 uses the global exception handling mechanism to capture and handle exceptions thrown in the system to better locate problems. Custom exception handling logic can be performed in the appexceptionHandler.php file. This file contains the render method, which is used to handle and return different types of exceptions.

3. Case Analysis
In order to better explain how to use logging and debugging skills to quickly locate problems, let’s analyze an actual case.

Suppose we encounter a problem during the development process: after the user submits the form, the page is always loading, but there is no error message. We can solve this problem by following the following steps:

1. Turn on the log
   In the config/app.php file, configure 'log' Set the value of the item to true to ensure that logging is turned on.

2. Add logging
   In the controller method that handles form submission, we can add some logging statements to track the execution of the program. For example, we can record a log before the form is submitted to determine whether the form data was successfully received:

    hinkacadeLog::info('Form data received: ' . json_encode($data));

3. View the log
   Find the corresponding file in the runtime/log directory Log files to see if there are relevant log records. Based on the log content, you can determine whether the form data is successfully received, whether there are data processing problems, etc.
4. Debug output
   If there is no clear exception information in the log, we can add debug output statements in the relevant code to further understand the program execution. For example, we can add the dump statement in the data processing code to check whether the data processing logic is correct.

5. Catching exceptions
   If the above steps do not find the problem, we can try to catch the exception in global exception handling. In the appexceptionHandler.php file, you can write code to capture exceptions and use the logging method to output exception information. For example:

   public function render(Exception $e): JsonResponse
   {
        hinkacadeLog::error('Exception caught: ' . $e->getMessage());
    return parent::render($e);
   }

Through the above steps, we can gradually locate the problem, analyze the execution details and exceptions of the program, and finally solve the form submission problem.

Conclusion:
This article introduces ThinkPHP6 logging and debugging techniques, including log configuration, recording and access, debugging output and exception handling. Mastering these skills can help developers quickly locate problems and speed up the development process. In actual development, we should make more use of these tools and techniques to play their role and improve development efficiency and code quality.

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