Detailed explanation of error and log usage in laravel_php example

The examples in this article describe the usage of errors and logs in laravel. Share it with everyone for your reference, the details are as follows:

Log

The logs in laravel are encapsulated based on monolog. laravel does several things on it:

① Simplify functions such as addInfo in monolog into functions like info

② Added two parameters: useFiles and useDailyFiles, making log management and cutting easier

③ If you want to call the monolog method, you need to call the callMonolog function

Okay, let’s see how to implement the following requirements:

Store different log information into different logs

This requirement is very common. For example, the log of calling an order needs to be recorded in order.log, and the record of obtaining store information needs to be recorded in shop.log. You can do this:

<&#63;php 
use Monolog\Logger;
use Monolog\Handler\StreamHandler;
use Illuminate\Log\Writer;
class BLogger
{
  // 所有的LOG都要求在这里注册
  const LOG_ERROR = 'error';
  private static $loggers = array();
  // 获取一个实例
  public static function getLogger($type = self::LOG_ERROR, $day = 30)
  {
    if (empty(self::$loggers[$type])) {
      self::$loggers[$type] = new Writer(new Logger($type));
      self::$loggers[$type]->useDailyFiles(storage_path().'/logs/'. $type .'.log', $day);
    }
    $log = self::$loggers[$type];
    return $log;
  }
}

In this way, different log data will be stored in different log files. Log data information can also be recorded.

Laravel’s error log stack is too long, what should I do?

Use the above Blogger class to record the necessary error information in start/global.php

// 错误日志信息
App::error(function(Exception $exception, $code)
{
  Log::error($exception);
  $err = [
    'message' => $exception->getMessage(),
    'file' => $exception->getFile(),
    'line' => $exception->getLine(),
    'code' => $exception->getCode(),
    'url' => Request::url(),
    'input' => Input::all(),
  ];
  BLogger::getLogger(BLogger::LOG_ERROR)->error($err);
});

Laravel’s default log does not use splitting

So Laravel’s default logging should be changed to split by default.

Also in start/global.php

Log::useDailyFiles(storage_path().'/logs/laravel.log', 30);

How to record the sql log of a request

This should be asked in more detail, do you want to record it in real time?

If you don’t want real-time recording, then laravel has DB::getQueryLog to get the sql request obtained by an app request:

## 在filters.php中
App::after(function($request, $response)
{
  // 数据库查询进行日志
  $queries = DB::getQueryLog();
  if (Config::get('query.log', false)) {
    BLogger::getLogger('query')->info($queries);
  }
}

If you need real-time recording (that is, when you die anywhere, the sql request of the previous page is also recorded), you need to listen to the illuminate.query event

// 数据库实时请求的日志
if (Config::get('database.log', false))
{
  Event::listen('illuminate.query', function($query, $bindings, $time, $name)
  {
    $data = compact('query','bindings', 'time', 'name');
    BLogger::getLogger(BLogger::LOG_QUERY_REAL_TIME)->info($data);
  });
}

Error

All errors in laravel will go through global App::error before appearing again

So for example, if you design an interface and hope that json data will be returned even if an error occurs, you can do this:

// 错误日志信息
App::error(function(Exception $exception, $code)
{
  // 如果没有路径就直接跳转到登录页面
  if ($exception instanceof NotFoundHttpException) {
    return Redirect::route('login');
  }
  Log::error($exception);
  $err = [
    'message' => $exception->getMessage(),
    'file' => $exception->getFile(),
    'line' => $exception->getLine(),
    'code' => $exception->getCode(),
    'url' => Request::url(),
    'input' => Input::all(),
  ];
  BLogger::getLogger(BLogger::LOG_ERROR)->error($err);
  $response = [
    'status' => 0,
    'error' => "服务器内部错误",
  ];
  return Response::json($response);
});

If you still want to hold the 404 error:

App::missing(function($exception)
{
  $response = [
    'status' => 0,
    'error' => "请求路径错误",
  ];
  return Response::json($response);
});

Readers who are interested in more Laravel-related content can check out the special topics of this site: "Introduction and Advanced Tutorial on Laravel Framework", "Summary of Excellent PHP Development Framework", "Basic Tutorial on Smarty Templates", "Summary of PHP Date and Time Usage" ", "php object-oriented programming introductory tutorial", "php string (string) usage summary", "php+mysql database operation introductory tutorial" and "php common database operation skills summary"

I hope what is described in this article will be helpful to everyone’s PHP program design based on the Laravel framework.