【Laravel】ログの出力方法とconfig/logging.phpについて理解する

use Illuminate\Support\Facades\Log;

\Log::info('Laravelアプリ内で表示させたい内容')

Log::info('Laravel ログ')

Log::debug($request)
Log::debug('ユーザーの確認', ['ユーザー']=> [$user_id]);

Log::error(`エラーが発生したユーザー： ${user_id}`);

<?php

namespace Illuminate\Support\Facades;

/**
 * @method static \Psr\Log\LoggerInterface channel(string $channel = null)
 * @method static \Psr\Log\LoggerInterface stack(array $channels, string $channel = null)
 * @method static \Psr\Log\LoggerInterface build(array $config)
 * @method static \Illuminate\Log\Logger withContext(array $context = [])
 * @method static \Illuminate\Log\Logger withoutContext()
 * @method static void alert(string $message, array $context = [])
 * @method static void critical(string $message, array $context = [])
 * @method static void debug(string $message, array $context = [])
 * @method static void emergency(string $message, array $context = [])
 * @method static void error(string $message, array $context = [])
 * @method static void info(string $message, array $context = [])
 * @method static void log($level, string $message, array $context = [])
 * @method static void notice(string $message, array $context = [])
 * @method static void warning(string $message, array $context = [])
 * @method static void write(string $level, string $message, array $context = [])
 * @method static void listen(\Closure $callback)
 *
 * @see \Illuminate\Log\Logger
 */
class Log extends Facade
{
    /**
     * Get the registered name of the component.
     *
     * @return string
     */
    protected static function getFacadeAccessor()
    {
        return 'log';
    }
}

<?php

use Monolog\Handler\NullHandler;
use Monolog\Handler\StreamHandler;
use Monolog\Handler\SyslogUdpHandler;
use Monolog\Processor\PsrLogMessageProcessor;

return [

    /*
    |--------------------------------------------------------------------------
    | Default Log Channel
    |--------------------------------------------------------------------------
    |
    | This option defines the default log channel that gets used when writing
    | messages to the logs. The name specified in this option should match
    | one of the channels defined in the "channels" configuration array.
    |
    */

    'default' => env('LOG_CHANNEL', 'stack'),

    /*
    |--------------------------------------------------------------------------
    | Deprecations Log Channel
    |--------------------------------------------------------------------------
    |
    | This option controls the log channel that should be used to log warnings
    | regarding deprecated PHP and library features. This allows you to get
    | your application ready for upcoming major versions of dependencies.
    |
    */

    'deprecations' => [
        'channel' => env('LOG_DEPRECATIONS_CHANNEL', 'null'),
        'trace' => false,
    ],

    /*
    |--------------------------------------------------------------------------
    | Log Channels
    |--------------------------------------------------------------------------
    |
    | Here you may configure the log channels for your application. Out of
    | the box, Laravel uses the Monolog PHP logging library. This gives
    | you a variety of powerful log handlers / formatters to utilize.
    |
    | Available Drivers: "single", "daily", "slack", "syslog",
    |                    "errorlog", "monolog",
    |                    "custom", "stack"
    |
    */

    'channels' => [
        'stack' => [
            'driver' => 'stack',
            'channels' => ['single'],
            'ignore_exceptions' => false,
        ],

        'single' => [
            'driver' => 'single',
            'path' => storage_path('logs/laravel.log'),
            'level' => env('LOG_LEVEL', 'debug'),
            'replace_placeholders' => true,
        ],

        'daily' => [
            'driver' => 'daily',
            'path' => storage_path('logs/laravel.log'),
            'level' => env('LOG_LEVEL', 'debug'),
            'days' => 14,
            'replace_placeholders' => true,
        ],

        'slack' => [
            'driver' => 'slack',
            'url' => env('LOG_SLACK_WEBHOOK_URL'),
            'username' => 'Laravel Log',
            'emoji' => ':boom:',
            'level' => env('LOG_LEVEL', 'critical'),
            'replace_placeholders' => true,
        ],

        'papertrail' => [
            'driver' => 'monolog',
            'level' => env('LOG_LEVEL', 'debug'),
            'handler' => env('LOG_PAPERTRAIL_HANDLER', SyslogUdpHandler::class),
            'handler_with' => [
                'host' => env('PAPERTRAIL_URL'),
                'port' => env('PAPERTRAIL_PORT'),
                'connectionString' => 'tls://'.env('PAPERTRAIL_URL').':'.env('PAPERTRAIL_PORT'),
            ],
            'processors' => [PsrLogMessageProcessor::class],
        ],

        'stderr' => [
            'driver' => 'monolog',
            'level' => env('LOG_LEVEL', 'debug'),
            'handler' => StreamHandler::class,
            'formatter' => env('LOG_STDERR_FORMATTER'),
            'with' => [
                'stream' => 'php://stderr',
            ],
            'processors' => [PsrLogMessageProcessor::class],
        ],

        'syslog' => [
            'driver' => 'syslog',
            'level' => env('LOG_LEVEL', 'debug'),
            'facility' => LOG_USER,
            'replace_placeholders' => true,
        ],

        'errorlog' => [
            'driver' => 'errorlog',
            'level' => env('LOG_LEVEL', 'debug'),
            'replace_placeholders' => true,
        ],

        'null' => [
            'driver' => 'monolog',
            'handler' => NullHandler::class,
        ],

        'emergency' => [
            'path' => storage_path('logs/laravel.log'),
        ],
    ],

];

    'channels' => [
        'stack' => [
            'driver' => 'stack',
            'channels' => ['single'],
            'ignore_exceptions' => false,
        ],

        'single' => [
            'driver' => 'single',
            'path' => storage_path('logs/laravel.log'),
            'level' => env('LOG_LEVEL', 'debug'),
            'replace_placeholders' => true,
        ],
     // 以下省略

'stack' => [
    'driver' => 'stack',
    'channels' => ['single'],
    'ignore_exceptions' => false,
],

'single' => [
    'driver' => 'single',
    'path' => storage_path('logs/laravel.log'),
    'level' => env('LOG_LEVEL', 'debug'),
    'replace_placeholders' => true,
],

'daily' => [
    'driver' => 'daily',
    'path' => storage_path('logs/laravel.log'),
    'level' => env('LOG_LEVEL', 'debug'),
    'days' => 14,
    'replace_placeholders' => true,
],

'slack' => [
    'driver' => 'slack',
    'url' => env('LOG_SLACK_WEBHOOK_URL'),
    'username' => 'Laravel Log',
    'emoji' => ':boom:',
    'level' => env('LOG_LEVEL', 'critical'),
    'replace_placeholders' => true,
],

'papertrail' => [
    'driver' => 'monolog',
    'level' => env('LOG_LEVEL', 'debug'),
    'handler' => env('LOG_PAPERTRAIL_HANDLER', SyslogUdpHandler::class),
    'handler_with' => [
        'host' => env('PAPERTRAIL_URL'),
        'port' => env('PAPERTRAIL_PORT'),
        'connectionString' => 'tls://'.env('PAPERTRAIL_URL').':'.env('PAPERTRAIL_PORT'),
    ],
    'processors' => [PsrLogMessageProcessor::class],
],

'stderr' => [
    'driver' => 'monolog',
    'level' => env('LOG_LEVEL', 'debug'),
    'handler' => StreamHandler::class,
    'formatter' => env('LOG_STDERR_FORMATTER'),
    'with' => [
        'stream' => 'php://stderr',
    ],
    'processors' => [PsrLogMessageProcessor::class],
],

'syslog' => [
    'driver' => 'syslog',
    'level' => env('LOG_LEVEL', 'debug'),
    'facility' => LOG_USER,
    'replace_placeholders' => true,
],

'errorlog' => [
    'driver' => 'errorlog',
    'level' => env('LOG_LEVEL', 'debug'),
    'replace_placeholders' => true,
],

'null' => [
    'driver' => 'monolog',
    'handler' => NullHandler::class,
],

'emergency' => [
    'path' => storage_path('logs/laravel.log'),
],

default' => env('LOG_CHANNEL', 'stack'),

        'stack' => [
            'driver' => 'stack',
            'channels' => ['single'],
            'ignore_exceptions' => false,
        ],

        'single' => [
            'driver' => 'single',
            'path' => storage_path('logs/laravel.log'),
            'level' => env('LOG_LEVEL', 'debug'),
            'replace_placeholders' => true,
        ],

\Log::info('User :user created a new post with ID :id', ['user' => 'Kami', 'id' => 1]);

User Kami created a new post with ID 1

        'stack' => [
            'driver' => 'stack',
            'channels' => ['stderr'],
            'ignore_exceptions' => false,
        ],

'stderr' => [
    'driver' => 'monolog',
    'level' => env('LOG_LEVEL', 'debug'),
    'handler' => StreamHandler::class,
    'formatter' => env('LOG_STDERR_FORMATTER'),
    'with' => [
        'stream' => 'php://stderr',
    ],
],

'stack' => [
    'driver' => 'stack',
    'channels' => ['stderr', 'daily'],
    'ignore_exceptions' => false,
],

        'daily' => [
            'driver' => 'daily',
            'path' => storage_path('logs/laravel.log'),
            'level' => env('LOG_LEVEL', 'debug'),
            'days' => 14,
            'replace_placeholders' => true,
        ],