1 安装 

composer require monolog/monolog

2 使用

// 创建日志服务

$logger = new Logger('my_logger’);

// 定义一个handle

$stream =  new StreamHandler(__DIR__.'/log/hello.log', Logger::DEBUG);

// 设置输出的格式 

// 默认的日期格式是 "Y-m-d H:i:s"

$dateFormat = "Y n j, g:i a";

// 输出格式

$output = "%datetime% > %level_name% > %message% %context% %extra%\n";

$formatter = new LineFormatter($output, $dateFormat);

$stream->setFormatter($formatter);

// 把处理器放到对象里面 $this->handles

$logger->pushHandler($stream);

// 现在你就可以用日志服务了

$logger->info('My logger is now ready',['hello']);

// 日志格式

2020 9 25, 9:43 pm > INFO > My logger is now ready ["hello"] {"name":"brady","dummy":"Hello world!"}

3 其他日志格式 按日期 生成

$logger->pushHandler(new \Monolog\Handler\RotatingFileHandler(__DIR__."/log/hello.log",Logger::DEBUG));

//这个会按天产生日志 hello-2020-09-01.log

[2020-09-25T21:43:34.047016+08:00] my_logger.INFO: My logger is now ready ["hello"] {"name":"brady","dummy":"Hello world!"}

logstash格式

$stream1 =  new StreamHandler(__DIR__.'/log/world.log', Logger::DEBUG);

$logstashformatter = new \Monolog\Formatter\LogstashFormatter("ml","system","test","world");

$stream1->setFormatter($logstashformatter);

$logger->pushHandler($stream1);

{"@timestamp":"2020-09-25T21:43:34.047016+08:00","@version":1,"host":"system","message":"My logger is now ready","type":"ml","channel":"my_logger","level":"INFO","monolog_level":200,"test":{"name":"brady","dummy":"Hello world!"},"world":["hello"]}

json格式

$stream2 = new \Monolog\Handler\RotatingFileHandler("./log/wang.log");

$json = new \Monolog\Formatter\JsonFormatter();

$stream2->setFormatter($json);

$logger->pushHandler($stream2);

{"message":"My logger is now ready","context":["hello"],"level":200,"level_name":"INFO","channel":"my_logger","extra":{"name":"brady","dummy":"Hello world!"},"traceId":"trrrrrrrrr","timestamp":"2020-09-25T21:32:47.958836+0800"}ArrayArrayArray{"message":"My logger is now ready","context":["hello"],"level":200,"level_name":"INFO","channel":"my_logger","datetime":"2020-09-25T21:47:27.521873+08:00","extra":{"name":"brady","dummy":"Hello world!"},"traceId":"trrrrrrrrr"}

<?php

require "./vendor/autoload.php";

error_reporting(E_ALL);

ini_set('display_errors', '1');

require __DIR__.'/vendor/autoload.php';

use Monolog\Formatter\LineFormatter;

use Monolog\Handler\FirePHPHandler;

use Monolog\Logger;

use Monolog\Handler\StreamHandler;

// 创建日志服务

$logger = new Logger('my_logger');

// 定义一个handle

$stream =  new StreamHandler(__DIR__.'/log/wei.log', Logger::DEBUG);

// 默认的日期格式是 "Y-m-d H:i:s"

$dateFormat = "Y n j, g:i a";

// 输出格式

$output = "%datetime% > %level_name% > %message% %context% %extra%\n";

$formatter = new LineFormatter($output, $dateFormat);

$stream->setFormatter($formatter);

// 把处理器放到对象里面 $this->handles

$logger->pushHandler($stream);

//第二个处理器 传到hello.log 里面

$logger->pushHandler(new \Monolog\Handler\RotatingFileHandler(__DIR__."/log/hello.log",Logger::DEBUG));

// 处理器 额外的数据给

$logger->pushProcessor(function ($record) {

   $record['extra']['dummy'] = 'Hello world!';

   return $record;

});

// 第三个处理器

$stream1 =  new StreamHandler(__DIR__.'/log/world.log', Logger::DEBUG);

$logstashformatter = new \Monolog\Formatter\LogstashFormatter("ml","system","test","world");

$stream1->setFormatter($logstashformatter);

$logger->pushHandler($stream1);

//第四个处理器

$stream2 = new \Monolog\Handler\RotatingFileHandler("./log/wang.log");

$json = new \Monolog\Formatter\JsonFormatter();

$stream2->setFormatter($json);

$logger->pushHandler($stream2);

// 处理器 额外的数据给

$logger->pushProcessor(function ($record) {

   $record['extra']['name'] = 'brady';

   $record['traceId'] = "trrrrrrrrr"; // 好像不行  只能是extra里面 因为record没这个字段

   return $record;

});

// 现在你就可以用日志服务了

$logger->info('My logger is now ready',['hello']);