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PSR-11 Monolog

Monolog Factories for PSR-11

Table of Contents

Installation

composer require wshafer/psr11-monolog

Usage

<?php

# Get the Channel Changer
$channel = $container->get('my-channel');

# Write to log
$channel->debug('Hi There');

Additional info can be found in the documentation

Containers

Any PSR-11 container wil work. In order to do that you will need to add configuration and register a new service that points to WShafer\PSR11MonoLog\MonologFactory

Below are some specific container examples to get you started

Pimple

// Create Container
$container = new \Xtreamwayz\Pimple\Container([
    // Logger using the default keys.
    'logger' => new \WShafer\PSR11MonoLog\MonologFactory(),
    
    // Another logger using a different channel configuration
    'other' => function($c) {
        return \WShafer\PSR11MonoLog\MonologFactory::channelTwo($c);
    },

    'config' => [
        'monolog' => [
            'handlers' => [
                // At the bare minimum you must include a default handler config.
                // Otherwise log entries will be sent to the void.
                'default' => [
                    'type' => 'stream',
                    'options' => [
                        'stream' => '/var/log/some-log-file.txt',
                    ],
                ],
                
                // Another Handler
                'myOtherHandler' => [
                    'type' => 'stream',
                    'options' => [
                        'stream' => '/var/log/someother-log-file.txt',
                    ],
                ],
            ],
            
            'channels' => [
                // Configure a second channel
                'channelTwo' => [
                    'name' => 'MyOtherChannel',
                    'handlers' => [
                        'myOtherHandler',
                    ],
                ],    
            ],
        ],
    ],
]);

// Get the default channel

/** @var \Monolog\Logger $defaultChannel */
$defaultChannel = $container->get('logger');

// Write to the default channel
$defaultChannel->debug('Write to log');


// Get the second channel

/** @var \Monolog\Logger $channelTwo */
$channelTwo = $container->get('channelTwo');

// Write to the second channel
$channelTwo->debug('Write to log');

Zend Service Manager

<?php
// Create the container and define the services you'd like to use
$container = new \Zend\ServiceManager\ServiceManager([
    'factories' => [
        // Logger using the default keys.
        'logger' => \WShafer\PSR11MonoLog\MonologFactory::class,
        
        // Another logger using a different channel configuration
        'channelTwo' => [\WShafer\PSR11MonoLog\MonologFactory::class, 'channelTwo']
    ]
]);

$container->setService(
    'config',
    [
        'monolog' => [
            'handlers' => [
                // At the bare minimum you must include a default handler config.
                // Otherwise log entries will be sent to the void.
                'default' => [
                    'type' => 'stream',
                    'options' => [
                        'stream' => '/var/log/some-log-file.txt',
                    ],
                ],
                
                // Another Handler
                'myOtherHandler' => [
                    'type' => 'stream',
                    'options' => [
                        'stream' => '/var/log/someother-log-file.txt',
                    ],
                ],
            ],
            
            'channels' => [
                // Configure a second channel
                'channelTwo' => [
                    'name' => 'MyOtherChannel',
                    'handlers' => [
                        'myOtherHandler',
                    ],
                ],    
            ],
        ],
    ]
);

// Get the default channel

/** @var \Monolog\Logger $defaultChannel */
$defaultChannel = $container->get('logger');

// Write to the default channel
$defaultChannel->debug('Write to log');


// Get the second channel

/** @var \Monolog\Logger $channelTwo */
$channelTwo = $container->get('channelTwo');

// Write to the second channel
$channelTwo->debug('Write to log');

Frameworks

Any framework that use a PSR-11 should work fine. Below are some specific framework examples to get you started

Zend Expressive

You'll need to add configuration and register the services you'd like to use. There are number of ways to do that but the recommended way is to create a new config file config/autoload/monolog.global.php

Configuration

config/autoload/monolog.global.php

<?php
return [
    'dependencies' => [
        'factories' => [
            // Logger using the default keys.
            'logger' => \WShafer\PSR11MonoLog\MonologFactory::class,
            
            // Another logger using a different channel configuration
            'channelTwo' => [\WShafer\PSR11MonoLog\MonologFactory::class, 'channelTwo']
        ]
    ],
    
    'monolog' => [
        'handlers' => [
            // At the bare minimum you must include a default handler config.
            // Otherwise log entries will be sent to the void.
            'default' => [
                'type' => 'stream',
                'options' => [
                    'stream' => '/var/log/some-log-file.txt',
                ],
            ],
            
            // Another Handler
            'myOtherHandler' => [
                'type' => 'stream',
                'options' => [
                    'stream' => '/var/log/someother-log-file.txt',
                ],
            ],
        ],
        
        'channels' => [
            // Configure a second channel
            'channelTwo' => [
                'name' => 'MyOtherChannel',
                'handlers' => [
                    'myOtherHandler',
                ],
            ],    
        ],
    ],
];

Zend Framework 3

You'll need to add configuration and register the services you'd like to use. There are number of ways to do that but the recommended way is to create a new config file config/autoload/monolog.global.php

Configuration

config/autoload/monolog.global.php

<?php
return [
    'service_manager' => [
        'factories' => [
            // Logger using the default keys.
            'logger' => \WShafer\PSR11MonoLog\MonologFactory::class,
            
            // Another logger using a different channel configuration
            'channelTwo' => [\WShafer\PSR11MonoLog\MonologFactory::class, 'channelTwo']
        ]
    ],
    
    'monolog' => [
        'handlers' => [
            // At the bare minimum you must include a default handler config.
            // Otherwise log entries will be sent to the void.
            'default' => [
                'type' => 'stream',
                'options' => [
                    'stream' => '/var/log/some-log-file.txt',
                ],
            ],
            
            // Another Handler
            'myOtherHandler' => [
                'type' => 'stream',
                'options' => [
                    'stream' => '/var/log/someother-log-file.txt',
                ],
            ],
        ],
        
        'channels' => [
            // Configure a second channel
            'channelTwo' => [
                'name' => 'MyOtherChannel',
                'handlers' => [
                    'myOtherHandler',
                ],
            ],    
        ],
    ],
];

Module Config

If you're not using the Zend Component Installer you will also need to register the Module.

config/modules.config.php (ZF 3 skeleton)

<?php

return [
    // ... Previously registered modules here
    'WShafer\\PSR11MonoLog',
];

config/application.config.php (ZF 2 skeleton)

<?php

return [
    'modules' => [
        // ... Previously registered modules here
        'WShafer\\PSR11MonoLog',
    ]
];

Configuration

Monolog uses four types of services that will each need to be configured for your application. In addition you will need to create a named service that maps to the \WShafer\PSR11MonoLog\MonologFactory based on the container you are using.

  • Named Services : These are services names wired up to a factory. The configuration will differ based on the type of container / framework in use.

  • Channels : Channels are a great way to identify to which part of the application a record is related. This is useful in big applications and is leveraged here.

    Picture two loggers sharing a handler that writes to a single log file. Channels allow you to identify the logger that issued every record. You can easily grep through the log files filtering this or that channel.

  • Handlers : These services do all the heavy lifting and log your message to the wired up system. There are many different handlers available to you, but he one you will most likely want to use for basic file logging is the StreamHandler. Tip: You can use the same handler for multiple channels.

  • Formatters : (Optional) Formatters are in charge of formatting the message for the handler. Generally you can use the defualt formatter for the handler you are using, in some circumstances you may however want to change the formatting of the message. Configuring a formatter will let you customize the message being sent to the log.

  • Processors : (Optional) Processors can be used to add data, change the message, filter, you name it. Monolog provides some built-in processors that can be used in your project. Look at the Processors section for the list.

Minimal Configuration

A minimal configuration would consist of at least one default handler and one named service. Please note that if you don't specify a default handler a NullHandler will be used when you wire up the default logger.

Minimal Example (using Zend Expressive for the example):

<?php

return [
    'dependencies' => [
        'factories' => [
            // Logger using the default keys.
            'logger' => \WShafer\PSR11MonoLog\MonologFactory::class,
        ]
    ],
    
    'monolog' => [
        'handlers' => [
            'default' => [
                'type' => 'stream',
                'options' => [
                    'stream' => '/var/log/some-log-file.txt',
                ],
            ],
        ],
    ],
];

Full Configuration

Full Example

<?php

return [
    
    'dependencies' => [
        'factories' => [
            // Logger using the default keys.
            'logger' => \WShafer\PSR11MonoLog\MonologFactory::class,
            
            // Another logger using a different channel configuration
            'channelTwo' => [\WShafer\PSR11MonoLog\MonologFactory::class, 'channelTwo']
        ]
    ],
        
    'monolog' => [
        'formatters' => [
            // Array Keys are the names used for the formatters
            'formatterOne' => [
                // A formatter type or pre-configured service from the container
                'type' => 'line',
                
                // Formatter specific options.  See formatters below
                'options' => [
                    'format'                     => "[%datetime%] %channel%.%level_name%: %message% %context% %extra%\n",
                    'dateFormat'                 => "c",
                    'allowInlineLineBreaks'      => true,
                    'ignoreEmptyContextAndExtra' => false,
                ],
            ],
            
            'formatterTwo' => [
                // A formatter type or pre-configured service from the container
                'type' => 'line',
                
                // Formatter specific options.  See formatters below
                'options' => [
                    'format'                     => "[%datetime%] %channel%.%level_name%: %message% %context% %extra%\n",
                    'dateFormat'                 => "c",
                    'allowInlineLineBreaks'      => false,
                    'ignoreEmptyContextAndExtra' => true,
                ],
            ],
        ],
        
        'handlers' => [
            // Array Keys are the names used for the handlers
            'default' => [
                // A Handler type or pre-configured service from the container
                'type' => 'stream',
                
                // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'formatter' => 'formatterOne', 
                
                // Handler specific options.  See handlers below
                'options' => [
                    'stream' => '/tmp/log_one.txt',
                ], 
            ],
            
            'handlerTwo' => [
                // A Handler type or pre-configured service from the container
                'type' => 'stream', 
                
                // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'formatter' => 'formatterTwo', 
                
                // Adaptor specific options.  See adaptors below
                'options' => [
                    'stream' => '/tmp/log_two.txt',
                ], 
            ],
        ],
        
        'processors' => [
            // Array Keys are the names used for the processors
            'processorOne' => [
                // A processor type or pre-configured service from the container
                'type' => 'psrLogMessage',
                
                // processor specific options.  See processors below
                'options' => [], 
            ],
            
            'processorTwo' => [
                // A processor type or pre-configured service from the container
                'type' => 'uid',
                
                // processor specific options.  See processors below
                'options' => [
                    'length'  => 7,
                ], 
            ],
        ],
        
        'channels' => [
            // Array Keys are the names used for the channels
            //
            // Note: You can specify "default" here to overwrite the default settings for the
            // default channel.  If no handler is defined for default then the default 
            // handler will be used.
            'default' => [
                // Optional: Name of channel to show in logs.  Defaults to the array key
                'name' => 'MyAppChannel',
                
                // array of handlers to attach to the channel.  Can use multiple handlers if needed.
                'handlers' => ['handlerOne', 'handlerTwo'],
                
                // optional array of processors to attach to the channel.  Can use multiple processors if needed.
                'processors' => ['processorOne', 'processorTwo'],
            ],
            
            'channelTwo' => [
                // Optional: Name of channel to show in logs.  Defaults to the array key
                'name' => 'MyOtherChannel',
                
                // array of handlers to attach to the channel.  Can use multiple handlers if needed.
                'handlers' => ['handlerTwo'],
                
                // optional array of processors to attach to the channel.  Can use multiple processors if needed.
                'processors' => ['processorTwo'],
            ],
        ],
    ],
];

Channels

<?php

return [
    'monolog' => [
        'channels' => [
            
            // Array Keys are the channel identifiers
            'myChannelName' => [
                // Optional: Name of channel to show in logs.  Defaults to the array key
                'name' => 'MyChannelLogName',
                                
                // Array of configured handlers.  See handlers for more info
                'handlers' => [  
                    'myHandler',  
                ],
                
                // Array of configured processors.  See processors for more info
                'processors' => [  
                    'myProcessor',  
                ],
            ],
        ],
    ],
];

Handlers

Log to files and syslog

StreamHandler

Logs records into any PHP stream, use this for log files.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'stream',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'stream'         => '/tmp/stream_test.txt', // Required:  File Path | Resource | Service Name
                    'level'          => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'         => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'filePermission' => null, // Optional: file permissions (default (0644) are only for owner read/write)
                    'useLocking'     => false, // Optional: Try to lock log file before doing any writes
                ],
            ],
        ],
    ],
];

Monolog Docs: StreamHandler

RotatingFileHandler

Logs records to a file and creates one logfile per day. It will also delete files older than $maxFiles. You should use logrotate for high profile setups though, this is just meant as a quick and dirty solution.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'rotating',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'filename'       => '/tmp/stream_test.txt', // Required:  File Path
                    'maxFiles'       => 0, // Optional:  The maximal amount of files to keep (0 means unlimited)
                    'level'          => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'         => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'filePermission' => null, // Optional: file permissions (default (0644) are only for owner read/write)
                    'useLocking'     => false, // Optional: Try to lock log file before doing any writes
                ],
            ],
        ],
    ],
];

Monolog Docs: RotatingFileHandler

SyslogHandler

Logs records to the syslog.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'syslog',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'ident'          => '/tmp/stream_test.txt', // Required:  The string ident is added to each message. 
                    'facility'       => LOG_USER, // Optional:  The facility argument is used to specify what type of program is logging the message.
                    'level'          => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'         => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'logOpts'        => LOG_PID, // Optional: Option flags for the openlog() call, defaults to LOG_PID
                ],
            ],
        ],
    ],
];

Monolog Docs: SyslogHandler PHP openlog(): openlog

ErrorLogHandler

Logs records to PHP's error_log() function.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'errorlog',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'messageType'    => \Monolog\Handler\ErrorLogHandler::OPERATING_SYSTEM, // Optional:  Says where the error should go.
                    'level'          => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'         => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'expandNewlines' => false, // Optional: If set to true, newlines in the message will be expanded to be take multiple log entries
                ],
            ],
        ],
    ],
];

Monolog Docs: ErrorLogHandler

Send alerts and emails

NativeMailerHandler

Sends emails using PHP's mail() function.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'nativeMailer',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'to'             => ['email1@test.com', 'email2@test.com'], // The receiver of the mail. Can be an array or string
                    'subject'        => 'Error Log', // The subject of the mail
                    'from'           => 'sender@test.com', // The sender of the mail
                    'level'          => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'         => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'maxColumnWidth' => 80, // Optional: The maximum column width that the message lines will have
                ],
            ],
        ],
    ],
];

Monolog Docs: NativeMailerHandler

SwiftMailerHandler

Sends emails using a Swift_Mailer instance.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'swiftMailer',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'mailer'  => 'my-service', // The mailer to use.  Must be a valid service name in the container
                    'message' => 'my-message', // An example message for real messages, only the body will be replaced.  Must be a valid service name or callable
                    'level'   => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'  => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: SwiftMailerHandler

PushoverHandler

Sends mobile notifications via the Pushover API.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'pushover',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'token'             => 'sometokenhere', // Pushover api token
                    'users'             => ['email1@test.com', 'email2@test.com'], // Pushover user id or array of ids the message will be sent to
                    'title'             => 'Error Log', // Optional: Title sent to the Pushover API
                    'level'             => \Monolog\Logger::INFO, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'            => false, // Optional:  Whether the messages that are handled can bubble up the stack or not
                    'useSSL'            => false, // Optional:  Whether to connect via SSL. Required when pushing messages to users that are not the pushover.net app owner. OpenSSL is required for this option.
                    'highPriorityLevel' => \Monolog\Logger::WARNING, // Optional: The minimum logging level at which this handler will start sending "high priority" requests to the Pushover API
                    'emergencyLevel'    => \Monolog\Logger::ERROR, // Optional: The minimum logging level at which this handler will start sending "emergency" requests to the Pushover API
                    'retry'             => '22', // Optional: The retry parameter specifies how often (in seconds) the Pushover servers will send the same notification to the user.
                    'expire'            => '300', // Optional: The expire parameter specifies how many seconds your notification will continue to be retried for (every retry seconds).
                ],
            ],
        ],
    ],
];

Monolog Docs: PushoverHandler

HipChatHandler

Sends notifications through the HipChat api to a hipchat room

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'hipChat',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'token'  => 'sometokenhere', // HipChat API Token
                    'room'   => 'some-room', // The room that should be alerted of the message (Id or Name)
                    'name'   => 'Error Log', // Optional: Name used in the "from" field.
                    'notify' => false, // Optional: Trigger a notification in clients or not
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'useSSL' => false, // Optional: Whether to connect via SSL
                    'format' => 'text', // Optional: The format of the messages (default to text, can be set to html if you have html in the messages)
                    'host'   => 'api.hipchat.com', // Optional: The HipChat server hostname.
                ],
            ],
        ],
    ],
];

Monolog Docs: HipChatHandler

FlowdockHandler

Logs records to a Flowdock account.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'flowdock',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'apiToken' => 'sometokenhere', // HipChat API Token
                    'level'    => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'   => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: FlowdockHandler

SlackbotHandler

Logs records to a Slack account using the Slackbot incoming hook.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'slackbot',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'slackTeam' => 'Team', // Slackbot token
                    'token'     => 'sometokenhere', // HipChat API Token
                    'channel'   => '#channel', // Slack channel (encoded ID or name)
                    'level'     => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'    => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: SlackbotHandler

SlackWebhookHandler

Logs records to a Slack account using Slack Webhooks.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'slackWebhook',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'webhookUrl'             => 'webhook.slack.com', // Slack Webhook URL
                    'channel'                => 'channel', // Slack channel (encoded ID or name)
                    'userName'               => 'Monolog', // Name of a bot
                    'useAttachment'          => false, // Optional: Whether the message should be added to Slack as attachment (plain text otherwise)
                    'iconEmoji'              => null, // Optional: The emoji name to use (or null)
                    'useShortAttachment'     => true, // Optional: Whether the the context/extra messages added to Slack as attachments are in a short style
                    'includeContextAndExtra' => true, // Optional: Whether the attachment should include context and extra data
                    'level'                  => \Monolog\Logger::INFO, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'                 => false, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'excludeFields'          => ['context.field1', 'extra.field2'], // Optional: Dot separated list of fields to exclude from slack message.
                ],
            ],
        ],
    ],
];

Monolog Docs: SlackWebhookHandler

SlackHandler

Logs records to a SlackHandler account using the Slack API (complex setup).

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'slack',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'token     '             => 'apiToken', // Slack API token
                    'channel'                => 'channel', // Slack channel (encoded ID or name)
                    'userName'               => 'Monolog', // Name of a bot
                    'useAttachment'          => false, // Optional: Whether the message should be added to Slack as attachment (plain text otherwise)
                    'iconEmoji'              => null, // Optional: The emoji name to use (or null)
                    'useShortAttachment'     => true, // Optional: Whether the the context/extra messages added to Slack as attachments are in a short style
                    'includeContextAndExtra' => true, // Optional: Whether the attachment should include context and extra data
                    'level'                  => \Monolog\Logger::INFO, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'                 => false, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'excludeFields'          => ['context.field1', 'extra.field2'], // Optional: Dot separated list of fields to exclude from slack message.
                ],
            ],
        ],
    ],
];

Monolog Docs: SlackHandler

MandrillHandler

Sends emails via the Mandrill API using a Swift_Message instance.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'mandrill',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'apiKey'  => 'my-service', // A valid Mandrill API key
                    'message' => 'my-message', // An example \Swiftmail message for real messages, only the body will be replaced.  Must be a valid service name or callable
                    'level'   => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'  => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: MandrillHandler

FleepHookHandler

Logs records to a Fleep conversation using Webhooks.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'fleepHook',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'token'  => 'sometokenhere', // Webhook token
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: FleepHookHandler

IFTTTHandler

Notifies an IFTTT trigger with the log channel, level name and message.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'IFTTT',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'apiToken' => 'sometokenhere', // Webhook token
                    'level'    => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'   => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: IFTTTHandler

Log specific servers and networked logging

SocketHandler

Logs records to sockets, use this for UNIX and TCP sockets. See an example.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'socket',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'connectionString' => 'unix:///var/log/httpd_app_log.socket', // Socket connection string.  You can use a unix:// prefix to access unix sockets and udp:// to open UDP sockets instead of the default TCP.
                    'timeout'          => 30, // Optional: The connection timeout, in seconds.
                    'writeTimeout'     => 90, // Optional: Set timeout period on a stream.
                    'level'            => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'           => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: SocketHandler

AmqpHandler

Logs records to an AMQP compatible server. Requires the php-amqp extension (1.0+) or the php-amqplib library.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'amqp',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'exchange'     => 'my-service', // AMQPExchange (php AMQP ext) or PHP AMQP lib channel.  Must be a valid service.
                    'exchangeName' => 'log-name', // Optional: Exchange name, for AMQPChannel (PhpAmqpLib) only
                    'level'        => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'       => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: AmqpHandler

GelfHandler

Logs records to a Graylog2 server. Requires package graylog2/gelf-php.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'gelf',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'publisher' => 'my-service', // A Gelf\PublisherInterface object.  Must be a valid service.
                    'level'     => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'    => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: GelfHandler

CubeHandler

Logs records to a Cube server.

Note: Cube is not under active development, maintenance or support by Square (or by its original author Mike Bostock). It has been deprecated internally for over a year.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'cube',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'url'    => 'http://test.com:80', // A valid url.  Must consist of three parts : protocol://host:port
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: CubeHandler

RavenHandler

Logs records to a Sentry server using raven.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'raven',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'client' => 'my-service', // A \Raven_Client object.  Must be a valid service.
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: RavenHandler

ZendMonitorHandler

Logs records to the Zend Monitor present in Zend Server.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'zend',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: ZendMonitorHandler

NewRelicHandler

Logs records to a NewRelic application.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'newRelic',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'level'           => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'          => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'appName'         => 'my-app', // Optional: Application name
                    'explodeArrays'   => 'false', // Optional: Explode Arrays
                    'transactionName' => 'my-transaction', // Optional: Explode Arrays
                ],
            ],
        ],
    ],
];

Monolog Docs: NewRelicHandler

LogglyHandler

Logs records to a Loggly account.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'loggly',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'token'  => 'sometokenhere', // Webhook token
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: LogglyHandler

RollbarHandler:

Logs records to a Rollbar account.

_Note: RollerbarHandler is out of date with upstream changes. In addition the Rollerbar library suggests using the PsrHandler instead. See Rollerbar Docs for how to set this up.

Monolog Docs: RollbarHandler

SyslogUdpHandler

Logs records to a remote Syslogd server.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'syslogUdp',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'host'     => 'somewhere.com', // Host
                    'port'     => 513, //  Optional: Port
                    'facility' => 'Me', // Optional: Facility
                    'level'    => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'   => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'ident'    => 'me-too', // Optional: Program name or tag for each log message.
                ],
            ],
        ],
    ],
];

Monolog Docs: SyslogUdpHandler

LogEntriesHandler

Logs records to a LogEntries account.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'logEntries',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'token'  => 'sometokenhere', // Log token supplied by LogEntries
                    'useSSL' => true, // Optional: Whether or not SSL encryption should be used.
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: LogEntriesHandler

Logging in development

FirePHPHandler

Handler for FirePHP, providing inline console messages within FireBug.

Note: The Firebug extension isn't being developed or maintained any longer.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'firePHP',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: FirePHPHandler

ChromePHPHandler

Handler for ChromePHP, providing inline console messages within Chrome.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'chromePHP',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: ChromePHPHandler

BrowserConsoleHandler

Handler to send logs to browser's Javascript console with no browser extension required. Most browsers supporting console API are supported.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'browserConsole',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: BrowserConsoleHandler

PHPConsoleHandler

Handler for PHP Console, providing inline console and notification popup messages within Chrome.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'phpConsole',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'options' => [], // Optional: See \Monolog\Handler\PHPConsoleHandler::$options for more details
                    'connector' => 'my-service', // Optional:  Instance of \PhpConsole\Connector class. Must be a valid service.
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: PHPConsoleHandler

###Logging in development

RedisHandler

Logs records to a Redis server. Requires the php-redis extension or the Predis library.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'redis',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'client'  => 'my-redis-service-name', // The redis instance.  Must be either a [Predis] client OR a Pecl Redis instance
                    'key'     => 'my-service', // The key name to push records to
                    'level'   => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'  => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'capSize' => true, // Optional: Number of entries to limit list size to, 0 = unlimited
                ],
            ],
        ],
    ],
];

Monolog Docs: RedisHandler

MongoDBHandler

Handler to write records in MongoDB via a Mongo extension connection.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'mongo',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'client'     => 'my-mongo-service-name', // MongoDB library or driver instance.
                    'database'   => 'my-db', // Database name
                    'collection' => 'collectionName', // Collection name
                    'level'      => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'     => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                    'capSize'    => true, // Optional: Number of entries to limit list size to, 0 = unlimited
                ],
            ],
        ],
    ],
];

Monolog Docs: MongoDBHandler

CouchDBHandler

Logs records to a CouchDB server.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'couchDb',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'host'     => 'localhost',  // Optional: Hostname/Ip address,  Default: 'localhost'
                    'port'     => 5984, // Optional: port,  Default: 5984
                    'dbname'   => 'db', // Optional: Database Name,  Default: 'logger'
                    'username' => 'someuser', // Optional: Username,  Default: null
                    'password' => 'somepass', // Optional: Password,  Default: null
                    'level'    => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'   => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: CouchDBHandler

DoctrineCouchDBHandler

Logs records to a CouchDB server via the Doctrine CouchDB ODM.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'doctrineCouchDb',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'client' => 'my-service', //  CouchDBClient service name.  Must be a valid container service
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: DoctrineCouchDBHandler

ElasticSearchHandler

Logs records to an Elastic Search server.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'doctrineCouchDb',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'client'      => 'my-service', //  Elastica Client object.  Must be a valid container service
                    'index'       => 'monolog', // Optional: Elastic index name
                    'type'        => 'record', // Optional: Elastic document type
                    'ignoreError' => false, // Optional: Suppress Elastica exceptions
                    'level'       => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'      => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: ElasticSearchHandler

DynamoDbHandler

Logs records to a DynamoDB table with the AWS SDK.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'dynamoDb',
                'formatter' => 'formatterName', // Optional: Formatter for the handler.  Default for the handler will be used if not supplied
                'options' => [
                    'client'      => 'my-service', //  DynamoDbClient object.  Must be a valid container service
                    'table'       => 'monolog', // Table name
                    'level'       => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'      => true, // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: DynamoDbHandler

Wrappers / Special Handlers

FingersCrossedHandler

A very interesting wrapper. It takes a logger as parameter and will accumulate log records of all levels until a record exceeds the defined severity level. At which point it delivers all records, including those of lower severity, to the handler it wraps. This means that until an error actually happens you will not see anything in your logs, but when it happens you will have the full information, including debug and info records. This provides you with all the information you need, but only when you need it.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'fingersCrossed',
                'options' => [
                    'handler'            => 'my-handler', // Required: Registered Handler to wrap
                    'activationStrategy' => 'my-service', // Optional: Strategy which determines when this handler takes action.  Must be either the error level or configured ActivationStrategyInterface service
                    'bufferSize'         => 0,            // Optional: How many entries should be buffered at most, beyond that the oldest items are removed from the buffer.
                    'bubble'             => true,         // Optional: Whether the messages that are handled can bubble up the stack or not
                    'stopBuffering'      => true,         // Optional: Whether the handler should stop buffering after being triggered (default true)
                    'passthruLevel'      => null,         // Optional: Minimum level to always flush to handler on close, even if strategy not triggered
                ],
            ],
        ],
    ],
];

Monolog Docs: FingersCrossedHandler

DeduplicationHandler

Useful if you are sending notifications or emails when critical errors occur. It takes a logger as parameter and will accumulate log records of all levels until the end of the request (or flush() is called). At that point it delivers all records to the handler it wraps, but only if the records are unique over a given time period (60 seconds by default). If the records are duplicates they are simply discarded. The main use of this is in case of critical failure like if your database is unreachable for example all your requests will fail and that can result in a lot of notifications being sent. Adding this handler reduces the amount of notifications to a manageable level.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'deduplication',
                'options' => [
                    'handler'            => 'my-handler',           // Required: Registered Handler to wrap
                    'deduplicationStore' => '/tmp/somestore',       // Optional: The file/path where the deduplication log should be kept
                    'deduplicationLevel' => \Monolog\Logger::ERROR, // Optional:The minimum logging level for log records to be looked at for deduplication purposes
                    'time'               => 60,                     // Optional: The period (in seconds) during which duplicate entries should be suppressed after a given log is sent through
                    'bubble'             => true,                   // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: DeduplicationHandler

WhatFailureGroupHandler

This handler extends the GroupHandler ignoring exceptions raised by each child handler. This allows you to ignore issues where a remote tcp connection may have died but you do not want your entire application to crash and may wish to continue to log to other handlers.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'whatFailureGroup',
                'options' => [
                    'handlers' => ['my-handler-one'. 'my-handler-two'], // Required: Array of Registered Handlers to wrap
                    'bubble'   => true,                                 // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: WhatFailureGroupHandler

BufferHandler

This handler will buffer all the log records it receives until close() is called at which point it will call handleBatch() on the handler it wraps with all the log messages at once. This is very useful to send an email with all records at once for example instead of having one mail for every log record.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'buffer',
                'options' => [
                    'handler'         => 'my-handler',           // Required: Registered Handler to wrap
                    'bufferLimit'     => 0,                      // Optional: How many entries should be buffered at most, beyond that the oldest items are removed from the buffer.
                    'level'           => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble'          => true,                   // Optional: Whether the messages that are handled can bubble up the stack or not
                    'flushOnOverflow' => false,                  // Optional: If true, the buffer is flushed when the max size has been reached, by default oldest entries are discarded
                ],
            ],
        ],
    ],
];

Monolog Docs: BufferHandler

GroupHandler

This handler groups other handlers. Every record received is sent to all the handlers it is configured with.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'group',
                'options' => [
                    'handlers' => ['my-handler-one'. 'my-handler-two'], // Required: Array of Registered Handlers to wrap
                    'bubble'   => true,                                 // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: GroupHandler

FilterHandler

Simple handler wrapper that filters records based on a list of levels

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'filter',
                'options' => [
                    'handler'         => 'my-handler',               // Required: Registered Handler to wrap
                    'minLevelOrList'  => \Monolog\Logger::DEBUG,     // Optional: An array of levels to accept or a minimum level if maxLevel is provided
                    'maxLevel'        => \Monolog\Logger::EMERGENCY, // Optional: Maximum level to accept, only used if $minLevelOrList is not an array
                    'bubble'          => true,                       // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: FilterHandler

SamplingHandler

A sampled event stream can be useful for logging high frequency events in a production environment where you only need an idea of what is happening and are not concerned with capturing every occurrence. Since the decision to handle or not handle a particular event is determined randomly, the resulting sampled log is not guaranteed to contain 1/N of the events that occurred in the application, but based on the Law of large numbers, it will tend to be close to this ratio with a large number of attempts.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type' => 'sampling',
                'options' => [
                    'handler' => 'my-handler', // Required: Registered Handler to wrap
                    'factor'  => 5,            // Required: Sample factor
                ],
            ],
        ],
    ],
];

Monolog Docs: SamplingHandler

NullHandler

Any record it can handle will be thrown away. This can be used to put on top of an existing stack to override it temporarily.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type'    => 'noop',
                'options' => [
                    'level' => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                ],
            ],
        ],
    ],
];

Monolog Docs: NullHandler

PsrHandler

Can be used to forward log records to an existing PSR-3 logger

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type'    => 'psr',
                'options' => [
                    'logger' => 'loggerService',        // Required: Logger Service to wrap from the container
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true,                   // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: PsrHandler

TestHandler

Used for testing, it records everything that is sent to it and has accessors to read out the information.

<?php

return [
    'monolog' => [
        'handlers' => [
            'myHandlerName' => [
                'type'    => 'test',
                'options' => [
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this handler will be triggered
                    'bubble' => true,                   // Optional: Whether the messages that are handled can bubble up the stack or not
                ],
            ],
        ],
    ],
];

Monolog Docs: TestHandler

Formatters

LineFomatter

Formats a log record into a one-line string.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'line',
                'options' => [
                    'format'                     => "[%datetime%] %channel%.%level_name%: %message% %context% %extra%\n",  // Optional
                    'dateFormat'                 => "c", // Optional : The format of the timestamp: one supported by DateTime::format
                    'allowInlineLineBreaks'      => false, // Optional : Whether to allow inline line breaks in log entries
                    'ignoreEmptyContextAndExtra' => false, // Optional
                ],
            ],
        ],
    ],
];

Monolog Docs: LineFormatter

HtmlFormatter

Used to format log records into a human readable html table, mainly suitable for emails.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'html',
                'options' => [
                    'dateFormat' => "c", // Optional
                ],
            ],
        ],
    ],
];

Monolog Docs: HtmlFormatter

NormalizerFormatter

Normalizes objects/resources down to strings so a record can easily be serialized/encoded.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'normalizer',
                'options' => [
                    'dateFormat' => "c", // Optional
                ],
            ],
        ],
    ],
];

Monolog Docs: NormalizerFormatter

ScalarFormatter

Used to format log records into an associative array of scalar values.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'scalar',
                'options' => [], // No options available
            ],
        ],
    ],
];

Monolog Docs: ScalarFormatter

JsonFormatter

Encodes a log record into json.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'json',
                'options' => [
                    'batchMode'     => \Monolog\Formatter\JsonFormatter::BATCH_MODE_JSON, //optional
                    'appendNewline' => true, //optional
                ],
            ],
        ],
    ],
];

Monolog Docs: JsonFormatter

WildfireFormatter

Used to format log records into the Wildfire/FirePHP protocol, only useful for the FirePHPHandler.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'wildfire',
                'options' => [
                    'dateFormat' => "c", // Optional
                ],
            ],
        ],
    ],
];

Monolog Docs: WildfireFormatter

ChromePHPFormatter

Used to format log records into the ChromePHP format, only useful for the ChromePHPHandler.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'chromePHP',
                'options' => [], // No options available
            ],
        ],
    ],
];

Monolog Docs: ChromePHPFormatter

GelfMessageFormatter

Used to format log records into Gelf message instances, only useful for the GelfHandler.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'gelf',
                'options' => [
                    'systemName'    => "my-system",  // Optional : the name of the system for the Gelf log message, defaults to the hostname of the machine
                    'extraPrefix'   => "extra_", // Optional : a prefix for 'extra' fields from the Monolog record
                    'contextPrefix' => 'ctxt_', // Optional : a prefix for 'context' fields from the Monolog record
                    'maxLength'     => 32766, // Optional : Length per field
                ],
            ],
        ],
    ],
];

Monolog Docs: GelfMessageFormatter

LogstashFormatter

Used to format log records into logstash event json, useful for any handler listed under inputs here.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'logstash',
                'options' => [
                    'applicationName' => 'app-name', // the application that sends the data, used as the "type" field of logstash
                    'systemName'      => "my-system",  // Optional : the system/machine name, used as the "source" field of logstash, defaults to the hostname of the machine
                    'extraPrefix'     => "extra_", // Optional : prefix for extra keys inside logstash "fields"
                    'contextPrefix'   => 'ctxt_', // Optional : prefix for context keys inside logstash "fields", defaults to ctxt_
                ],
            ],
        ],
    ],
];

Monolog Docs: LogstashFormatter

ElasticaFormatter

Used to format log records into logstash event json, useful for any handler listed under inputs here.

<?php

return [
    'monolog' => [
        'formatters' => [
            'ElasticaFormatter' => [
                'type' => 'elastica',
                'options' => [
                    'index'   => 'some-index', // Elastic search index name
                    'type'    => "doc-type",  // Elastic search document type
                ],
            ],
        ],
    ],
];

Monolog Docs: ElasticaFormatter

LogglyFormatter

Used to format log records into Loggly messages, only useful for the LogglyHandler.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'loggly',
                'options' => [
                    'batchMode'     => \Monolog\Formatter\JsonFormatter::BATCH_MODE_NEWLINES, //optional
                    'appendNewline' => false, //optional
                ],
            ],
        ],
    ],
];

Monolog Docs: LogglyFormatter

FlowdockFormatter

Used to format log records into Flowdock messages, only useful for the FlowdockHandler.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'flowdock',
                'options' => [
                    'source'      => 'Some Source',
                    'sourceEmail' => 'source@email.com'
                ],
            ],
        ],
    ],
];

Monolog Docs: FlowdockFormatter

MongoDBFormatter

Converts \DateTime instances to \MongoDate and objects recursively to arrays, only useful with the MongoDBHandler.

<?php

return [
    'monolog' => [
        'formatters' => [
            'myFormatterName' => [
                'type' => 'mongodb',
                'options' => [
                    'maxNestingLevel'        => 3, // optional : 0 means infinite nesting, the $record itself is level 1, $record['context'] is 2
                    'exceptionTraceAsString' => true, // optional : set to false to log exception traces as a sub documents instead of strings
                ],
            ],
        ],
    ],
];

Monolog Docs: MongoDBFormatter

Processors

PsrLogMessageProcessor

Processes a log record's message according to PSR-3 rules, replacing {foo} with the value from $context['foo'].

<?php

return [
    'monolog' => [
        'processors' => [
            'myProcessorsName' => [
                'type' => 'psrLogMessage',
                'options' => [], // No options
            ],
        ],
    ],
];

Monolog Docs: PsrLogMessageProcessor

IntrospectionProcessor

Adds the line/file/class/method from which the log call originated.

<?php

return [
    'monolog' => [
        'processors' => [
            'myProcessorsName' => [
                'type' => 'introspection',
                'options' => [
                    'level'                => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this processor will be triggered
                    'skipClassesPartials'  => [], // Optional
                    'skipStackFramesCount' => 0, // Optional
                ],
            ],
        ],
    ],
];

Monolog Docs: IntrospectionProcessor

WebProcessor

Adds the current request URI, request method and client IP to a log record.

<?php

return [
    'monolog' => [
        'processors' => [
            'myProcessorsName' => [
                'type' => 'web',
                'options' => [
                    'serverData'  => 'my-service', // Optional: Array, object w/ ArrayAccess, or valid service name that provides access to the $_SERVER data
                    'extraFields' => [], // Optional: Field names and the related key inside $serverData to be added. If not provided it defaults to: url, ip, http_method, server, referrer
                ],
            ],
        ],
    ],
];

Monolog Docs: WebProcessor

MemoryUsageProcessor

Adds the current memory usage to a log record.

<?php

return [
    'monolog' => [
        'processors' => [
            'myProcessorsName' => [
                'type' => 'memoryUsage',
                'options' => [], // No options
            ],
        ],
    ],
];

Monolog Docs: MemoryUsageProcessor

MemoryPeakUsageProcessor

Adds the peak memory usage to a log record.

<?php

return [
    'monolog' => [
        'processors' => [
            'myProcessorsName' => [
                'type' => 'memoryPeak',
                'options' => [], // No options
            ],
        ],
    ],
];

Monolog Docs: MemoryPeakUsageProcessor

ProcessIdProcessor

Adds the process id to a log record.

<?php

return [
    'monolog' => [
        'processors' => [
            'myProcessorsName' => [
                'type' => 'processId',
                'options' => [], // No options
            ],
        ],
    ],
];

Monolog Docs: ProcessIdProcessor

UidProcessor

Adds a unique identifier to a log record.

<?php

return [
    'monolog' => [
        'processors' => [
            'myProcessorsName' => [
                'type' => 'uid',
                'options' => [
                    'length'  => 7, // Optional: The uid length. Must be an integer between 1 and 32
                ],
            ],
        ],
    ],
];

Monolog Docs: UidProcessor

GitProcessor

Adds the current git branch and commit to a log record.

Note: Only works if the git executable is in your working path.

<?php

return [
    'monolog' => [
        'processors' => [
            'myProcessorsName' => [
                'type' => 'git',
                'options' => [
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this processor will be triggered
                ],
            ],
        ],
    ],
];

Monolog Docs: GitProcessor

MercurialProcessor

Adds the current hg branch and commit to a log record.

Note: Only works if the hg executable is in your working path.

<?php

return [
    'monolog' => [
        'processors' => [
            'myProcessorsName' => [
                'type' => 'mercurial',
                'options' => [
                    'level'  => \Monolog\Logger::DEBUG, // Optional: The minimum logging level at which this processor will be triggered
                ],
            ],
        ],
    ],
];

Monolog Docs: MercurialProcessor

TagProcessor

Adds an array of predefined tags to a log record.

<?php

return [
    'monolog' => [
        'processors' => [
            'myProcessorsName' => [
                'type' => 'tags',
                'options' => [
                    'tags'  => [], // Optional: Array of tags to add to records
                ],
            ],
        ],
    ],
];

Monolog Docs: TagProcessor

Upgrades

Version 1 to Version 2

When upgrading from version 1 to version 2, there shouldn't be any changes needed. Please note that using the ChannelChanger directly is no longer recommended. Named services should be used instead. See above for more info.

Changes
  • A "default" channel entry and handler is added automatically to the config. This default channel requires you to either specify a configured handler for the channel OR there must be a 'default' channel configured in order to use it. Most Version 1 users should not have an issue with this change and the factories should still function normally.

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PSR11 Factories for Monolog

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