1.25.2 (2019-11-13)

• Fixed normalization of Traversables to avoid traversing them as not all of them are rewindable
• Fixed setFormatter/getFormatter to forward to the nested handler in FilterHandler, FingersCrossedHandler, BufferHandler and SamplingHandler
• Fixed BrowserConsoleHandler formatting when using multiple styles
• Fixed normalization of exception codes to be always integers even for PDOException which have them as numeric strings
• Fixed normalization of SoapFault objects containing non-strings as "detail"
• Fixed json encoding across all handlers to always attempt recovery of non-UTF-8 strings instead of failing the whole encoding

1.25.1 (2019-09-06)

• Fixed forward-compatible interfaces to be compatible with Monolog 1.x too.

1.25.0 (2019-09-06)

• Deprecated SlackbotHandler, use SlackWebhookHandler or SlackHandler instead
• Deprecated RavenHandler, use sentry/sentry 2.x and their Sentry\Monolog\Handler instead
• Deprecated HipChatHandler, migrate to Slack and use SlackWebhookHandler or SlackHandler instead
• Added forward-compatible interfaces and traits FormattableHandlerInterface, FormattableHandlerTrait, ProcessableHandlerInterface, ProcessableHandlerTrait. If you use modern PHP and want to make code compatible with Monolog 1 and 2 this can help. You will have to require at least Monolog 1.25 though.
• Added support for RFC3164 (outdated BSD syslog protocol) to SyslogUdpHandler
• Fixed issue in GroupHandler and WhatFailureGroupHandler where setting multiple processors would duplicate records
• Fixed issue in SignalHandler restarting syscalls functionality
• Fixed normalizers handling of exception backtraces to avoid serializing arguments in some cases
• Fixed ZendMonitorHandler to work with the latest Zend Server versions
• Fixed ChromePHPHandler to avoid sending more data than latest Chrome versions allow in headers (4KB down from 256KB).

1.24.0 (2018-11-05)

• BC Notice: If you are extending any of the Monolog's Formatters' normalize method, make sure you add the new $depth = 0 argument to your function signature to avoid strict PHP warnings.
• Added a ResettableInterface in order to reset/reset/clear/flush handlers and processors
• Added a ProcessorInterface as an optional way to label a class as being a processor (mostly useful for autowiring dependency containers)
• Added a way to log signals being received using Monolog\SignalHandler
• Added ability to customize error handling at the Logger level using Logger::setExceptionHandler
• Added InsightOpsHandler to migrate users of the LogEntriesHandler
• Added protection to NormalizerHandler against circular and very deep structures, it now stops normalizing at a depth of 9
• Added capture of stack traces to ErrorHandler when logging PHP errors
• Added RavenHandler support for a contexts context or extra key to forward that to Sentry's contexts
• Added forwarding of context info to FluentdFormatter
• Added SocketHandler::setChunkSize to override the default chunk size in case you must send large log lines to rsyslog for example
• Added ability to extend/override BrowserConsoleHandler
• Added SlackWebhookHandler::getWebhookUrl and SlackHandler::getToken to enable class extensibility
• Added SwiftMailerHandler::getSubjectFormatter to enable class extensibility
• Dropped official support for HHVM in test builds
• Fixed normalization of exception traces when call_user_func is used to avoid serializing objects and the data they contain
• Fixed naming of fields in Slack handler, all field names are now capitalized in all cases
• Fixed HipChatHandler bug where slack dropped messages randomly
• Fixed normalization of objects in Slack handlers
• Fixed support for PHP7's Throwable in NewRelicHandler
• Fixed race bug when StreamHandler sometimes incorrectly reported it failed to create a directory
• Fixed table row styling issues in HtmlFormatter
• Fixed RavenHandler dropping the message when logging exception
• Fixed WhatFailureGroupHandler skipping processors when using handleBatch and implement it where possible
• Fixed display of anonymous class names

1.23.0 (2017-06-19)

• Improved SyslogUdpHandler's support for RFC5424 and added optional $ident argument
• Fixed GelfHandler truncation to be per field and not per message
• Fixed compatibility issue with PHP <5.3.6
• Fixed support for headless Chrome in ChromePHPHandler
• Fixed support for latest Aws SDK in DynamoDbHandler
• Fixed support for SwiftMailer 6.0+ in SwiftMailerHandler

1.22.1 (2017-03-13)

• Fixed lots of minor issues in the new Slack integrations
• Fixed support for allowInlineLineBreaks in LineFormatter when formatting exception backtraces

1.22.0 (2016-11-26)

• Added SlackbotHandler and SlackWebhookHandler to set up Slack integration more easily
• Added MercurialProcessor to add mercurial revision and branch names to log records
• Added support for AWS SDK v3 in DynamoDbHandler
• Fixed fatal errors occuring when normalizing generators that have been fully consumed
• Fixed RollbarHandler to include a level (rollbar level), monolog_level (original name), channel and datetime (unix)
• Fixed RollbarHandler not flushing records automatically, calling close() explicitly is not necessary anymore
• Fixed SyslogUdpHandler to avoid sending empty frames
• Fixed a few PHP 7.0 and 7.1 compatibility issues

1.21.0 (2016-07-29)

• Break: Reverted the addition of $context when the ErrorHandler handles regular php errors from 1.20.0 as it was causing issues
• Added support for more formats in RotatingFileHandler::setFilenameFormat as long as they have Y, m and d in order
• Added ability to format the main line of text the SlackHandler sends by explictly setting a formatter on the handler
• Added information about SoapFault instances in NormalizerFormatter
• Added $handleOnlyReportedErrors option on ErrorHandler::registerErrorHandler (default true) to allow logging of all errors no matter the error_reporting level

1.20.0 (2016-07-02)

• Added FingersCrossedHandler::activate() to manually trigger the handler regardless of the activation policy
• Added StreamHandler::getUrl to retrieve the stream's URL
• Added ability to override addRow/addTitle in HtmlFormatter
• Added the $context to context information when the ErrorHandler handles a regular php error
• Deprecated RotatingFileHandler::setFilenameFormat to only support 3 formats: Y, Y-m and Y-m-d
• Fixed WhatFailureGroupHandler to work with PHP7 throwables
• Fixed a few minor bugs

1.19.0 (2016-04-12)

• Break: StreamHandler will not close streams automatically that it does not own. If you pass in a stream (not a path/url), then it will not close it for you. You can retrieve those using getStream() if needed
• Added DeduplicationHandler to remove duplicate records from notifications across multiple requests, useful for email or other notifications on errors
• Added ability to use %message% and other LineFormatter replacements in the subject line of emails sent with NativeMailHandler and SwiftMailerHandler
• Fixed HipChatHandler handling of long messages

1.18.2 (2016-04-02)

• Fixed ElasticaFormatter to use more precise dates
• Fixed GelfMessageFormatter sending too long messages

1.18.1 (2016-03-13)

• Fixed SlackHandler bug where slack dropped messages randomly
• Fixed RedisHandler issue when using with the PHPRedis extension
• Fixed AmqpHandler content-type being incorrectly set when using with the AMQP extension
• Fixed BrowserConsoleHandler regression

1.18.0 (2016-03-01)

• Added optional reduction of timestamp precision via Logger->useMicrosecondTimestamps(false), disabling it gets you a bit of performance boost but reduces the precision to the second instead of microsecond
• Added possibility to skip some extra stack frames in IntrospectionProcessor if you have some library wrapping Monolog that is always adding frames
• Added Logger->withName to clone a logger (keeping all handlers) with a new name
• Added FluentdFormatter for the Fluentd unix socket protocol
• Added HandlerWrapper base class to ease the creation of handler wrappers, just extend it and override as needed
• Added support for replacing context sub-keys using %context.*% in LineFormatter
• Added support for payload context value in RollbarHandler
• Added setRelease to RavenHandler to describe the application version, sent with every log
• Added support for fingerprint context value in RavenHandler
• Fixed JSON encoding errors that would gobble up the whole log record, we now handle those more gracefully by dropping chars as needed
• Fixed write timeouts in SocketHandler and derivatives, set to 10sec by default, lower it with setWritingTimeout()
• Fixed PHP7 compatibility with regard to Exception/Throwable handling in a few places

1.17.2 (2015-10-14)

• Fixed ErrorHandler compatibility with non-Monolog PSR-3 loggers
• Fixed SlackHandler handling to use slack functionalities better
• Fixed SwiftMailerHandler bug when sending multiple emails they all had the same id
• Fixed 5.3 compatibility regression

1.17.1 (2015-08-31)

• Fixed RollbarHandler triggering PHP notices

1.17.0 (2015-08-30)

• Added support for checksum and release context/extra values in RavenHandler
• Added better support for exceptions in RollbarHandler
• Added UidProcessor::getUid
• Added support for showing the resource type in NormalizedFormatter
• Fixed IntrospectionProcessor triggering PHP notices

1.16.0 (2015-08-09)

• Added IFTTTHandler to notify ifttt.com triggers
• Added Logger::setHandlers() to allow setting/replacing all handlers
• Added $capSize in RedisHandler to cap the log size
• Fixed StreamHandler creation of directory to only trigger when the first log write happens
• Fixed bug in the handling of curl failures
• Fixed duplicate logging of fatal errors when both error and fatal error handlers are registered in monolog's ErrorHandler
• Fixed missing fatal errors records with handlers that need to be closed to flush log records
• Fixed TagProcessor::addTags support for associative arrays

1.15.0 (2015-07-12)

• Added addTags and setTags methods to change a TagProcessor
• Added automatic creation of directories if they are missing for a StreamHandler to open a log file
• Added retry functionality to Loggly, Cube and Mandrill handlers so they retry up to 5 times in case of network failure
• Fixed process exit code being incorrectly reset to 0 if ErrorHandler::registerExceptionHandler was used
• Fixed HTML/JS escaping in BrowserConsoleHandler
• Fixed JSON encoding errors being silently suppressed (PHP 5.5+ only)

1.14.0 (2015-06-19)

• Added PHPConsoleHandler to send record to Chrome's PHP Console extension and library
• Added support for objects implementing __toString in the NormalizerFormatter
• Added support for HipChat's v2 API in HipChatHandler
• Added Logger::setTimezone() to initialize the timezone monolog should use in case date.timezone isn't correct for your app
• Added an option to send formatted message instead of the raw record on PushoverHandler via ->useFormattedMessage(true)
• Fixed curl errors being silently suppressed

1.13.1 (2015-03-09)

• Fixed regression in HipChat requiring a new token to be created

1.13.0 (2015-03-05)

• Added Registry::hasLogger to check for the presence of a logger instance
• Added context.user support to RavenHandler
• Added HipChat API v2 support in the HipChatHandler
• Added NativeMailerHandler::addParameter to pass params to the mail() process
• Added context data to SlackHandler when $includeContextAndExtra is true
• Added ability to customize the Swift_Message per-email in SwiftMailerHandler
• Fixed SwiftMailerHandler to lazily create message instances if a callback is provided
• Fixed serialization of INF and NaN values in Normalizer and LineFormatter

1.12.0 (2014-12-29)

• Break: HandlerInterface::isHandling now receives a partial record containing only a level key. This was always the intent and does not break any Monolog handler but is strictly speaking a BC break and you should check if you relied on any other field in your own handlers.
• Added PsrHandler to forward records to another PSR-3 logger
• Added SamplingHandler to wrap around a handler and include only every Nth record
• Added MongoDBFormatter to support better storage with MongoDBHandler (it must be enabled manually for now)
• Added exception codes in the output of most formatters
• Added LineFormatter::includeStacktraces to enable exception stack traces in logs (uses more than one line)
• Added $useShortAttachment to SlackHandler to minify attachment size and $includeExtra to append extra data
• Added $host to HipChatHandler for users of private instances
• Added $transactionName to NewRelicHandler and support for a transaction_name context value
• Fixed MandrillHandler to avoid outputing API call responses
• Fixed some non-standard behaviors in SyslogUdpHandler

1.11.0 (2014-09-30)

• Break: The NewRelicHandler extra and context data are now prefixed with extra_ and context_ to avoid clashes. Watch out if you have scripts reading those from the API and rely on names
• Added WhatFailureGroupHandler to suppress any exception coming from the wrapped handlers and avoid chain failures if a logging service fails
• Added MandrillHandler to send emails via the Mandrillapp.com API
• Added SlackHandler to log records to a Slack.com account
• Added FleepHookHandler to log records to a Fleep.io account
• Added LogglyHandler::addTag to allow adding tags to an existing handler
• Added $ignoreEmptyContextAndExtra to LineFormatter to avoid empty [] at the end
• Added $useLocking to StreamHandler and RotatingFileHandler to enable flock() while writing
• Added support for PhpAmqpLib in the AmqpHandler
• Added FingersCrossedHandler::clear and BufferHandler::clear to reset them between batches in long running jobs
• Added support for adding extra fields from $_SERVER in the WebProcessor
• Fixed support for non-string values in PrsLogMessageProcessor
• Fixed SwiftMailer messages being sent with the wrong date in long running scripts
• Fixed minor PHP 5.6 compatibility issues
• Fixed BufferHandler::close being called twice

1.10.0 (2014-06-04)

• Added Logger::getHandlers() and Logger::getProcessors() methods
• Added $passthruLevel argument to FingersCrossedHandler to let it always pass some records through even if the trigger level is not reached
• Added support for extra data in NewRelicHandler
• Added $expandNewlines flag to the ErrorLogHandler to create multiple log entries when a message has multiple lines

1.9.1 (2014-04-24)

• Fixed regression in RotatingFileHandler file permissions
• Fixed initialization of the BufferHandler to make sure it gets flushed after receiving records
• Fixed ChromePHPHandler and FirePHPHandler's activation strategies to be more conservative

1.9.0 (2014-04-20)

• Added LogEntriesHandler to send logs to a LogEntries account
• Added $filePermissions to tweak file mode on StreamHandler and RotatingFileHandler
• Added $useFormatting flag to MemoryProcessor to make it send raw data in bytes
• Added support for table formatting in FirePHPHandler via the table context key
• Added a TagProcessor to add tags to records, and support for tags in RavenHandler
• Added $appendNewline flag to the JsonFormatter to enable using it when logging to files
• Added sound support to the PushoverHandler
• Fixed multi-threading support in StreamHandler
• Fixed empty headers issue when ChromePHPHandler received no records
• Fixed default format of the ErrorLogHandler

1.8.0 (2014-03-23)

• Break: the LineFormatter now strips newlines by default because this was a bug, set $allowInlineLineBreaks to true if you need them
• Added BrowserConsoleHandler to send logs to any browser's console via console.log() injection in the output
• Added FilterHandler to filter records and only allow those of a given list of levels through to the wrapped handler
• Added FlowdockHandler to send logs to a Flowdock account
• Added RollbarHandler to send logs to a Rollbar account
• Added HtmlFormatter to send prettier log emails with colors for each log level
• Added GitProcessor to add the current branch/commit to extra record data
• Added a Monolog\Registry class to allow easier global access to pre-configured loggers
• Added support for the new official graylog2/gelf-php lib for GelfHandler, upgrade if you can by replacing the mlehner/gelf-php requirement
• Added support for HHVM
• Added support for Loggly batch uploads
• Added support for tweaking the content type and encoding in NativeMailerHandler
• Added $skipClassesPartials to tweak the ignored classes in the IntrospectionProcessor
• Fixed batch request support in GelfHandler

1.7.0 (2013-11-14)

• Added ElasticSearchHandler to send logs to an Elastic Search server
• Added DynamoDbHandler and ScalarFormatter to send logs to Amazon's Dynamo DB
• Added SyslogUdpHandler to send logs to a remote syslogd server
• Added LogglyHandler to send logs to a Loggly account
• Added $level to IntrospectionProcessor so it only adds backtraces when needed
• Added $version to LogstashFormatter to allow using the new v1 Logstash format
• Added $appName to NewRelicHandler
• Added configuration of Pushover notification retries/expiry
• Added $maxColumnWidth to NativeMailerHandler to change the 70 chars default
• Added chainability to most setters for all handlers
• Fixed RavenHandler batch processing so it takes the message from the record with highest priority
• Fixed HipChatHandler batch processing so it sends all messages at once
• Fixed issues with eAccelerator
• Fixed and improved many small things

1.6.0 (2013-07-29)

• Added HipChatHandler to send logs to a HipChat chat room
• Added ErrorLogHandler to send logs to PHP's error_log function
• Added NewRelicHandler to send logs to NewRelic's service
• Added Monolog\ErrorHandler helper class to register a Logger as exception/error/fatal handler
• Added ChannelLevelActivationStrategy for the FingersCrossedHandler to customize levels by channel
• Added stack traces output when normalizing exceptions (json output & co)
• Added Monolog\Logger::API constant (currently 1)
• Added support for ChromePHP's v4.0 extension
• Added support for message priorities in PushoverHandler, see $highPriorityLevel and $emergencyLevel
• Added support for sending messages to multiple users at once with the PushoverHandler
• Fixed RavenHandler's support for batch sending of messages (when behind a Buffer or FingersCrossedHandler)
• Fixed normalization of Traversables with very large data sets, only the first 1000 items are shown now
• Fixed issue in RotatingFileHandler when an open_basedir restriction is active
• Fixed minor issues in RavenHandler and bumped the API to Raven 0.5.0
• Fixed SyslogHandler issue when many were used concurrently with different facilities

1.5.0 (2013-04-23)

• Added ProcessIdProcessor to inject the PID in log records
• Added UidProcessor to inject a unique identifier to all log records of one request/run
• Added support for previous exceptions in the LineFormatter exception serialization
• Added Monolog\Logger::getLevels() to get all available levels
• Fixed ChromePHPHandler so it avoids sending headers larger than Chrome can handle

1.4.1 (2013-04-01)

• Fixed exception formatting in the LineFormatter to be more minimalistic
• Fixed RavenHandler's handling of context/extra data, requires Raven client >0.1.0
• Fixed log rotation in RotatingFileHandler to work with long running scripts spanning multiple days
• Fixed WebProcessor array access so it checks for data presence
• Fixed Buffer, Group and FingersCrossed handlers to make use of their processors

1.4.0 (2013-02-13)

• Added RedisHandler to log to Redis via the Predis library or the phpredis extension
• Added ZendMonitorHandler to log to the Zend Server monitor
• Added the possibility to pass arrays of handlers and processors directly in the Logger constructor
• Added $useSSL option to the PushoverHandler which is enabled by default
• Fixed ChromePHPHandler and FirePHPHandler issue when multiple instances are used simultaneously
• Fixed header injection capability in the NativeMailHandler

1.3.1 (2013-01-11)

• Fixed LogstashFormatter to be usable with stream handlers
• Fixed GelfMessageFormatter levels on Windows

1.3.0 (2013-01-08)

• Added PSR-3 compliance, the Monolog\Logger class is now an instance of Psr\Log\LoggerInterface
• Added PsrLogMessageProcessor that you can selectively enable for full PSR-3 compliance
• Added LogstashFormatter (combine with SocketHandler or StreamHandler to send logs to Logstash)
• Added PushoverHandler to send mobile notifications
• Added CouchDBHandler and DoctrineCouchDBHandler
• Added RavenHandler to send data to Sentry servers
• Added support for the new MongoClient class in MongoDBHandler
• Added microsecond precision to log records' timestamps
• Added $flushOnOverflow param to BufferHandler to flush by batches instead of losing the oldest entries
• Fixed normalization of objects with cyclic references

1.2.1 (2012-08-29)

• Added new $logopts arg to SyslogHandler to provide custom openlog options
• Fixed fatal error in SyslogHandler

1.2.0 (2012-08-18)

• Added AmqpHandler (for use with AMQP servers)
• Added CubeHandler
• Added NativeMailerHandler::addHeader() to send custom headers in mails
• Added the possibility to specify more than one recipient in NativeMailerHandler
• Added the possibility to specify float timeouts in SocketHandler
• Added NOTICE and EMERGENCY levels to conform with RFC 5424
• Fixed the log records to use the php default timezone instead of UTC
• Fixed BufferHandler not being flushed properly on PHP fatal errors
• Fixed normalization of exotic resource types
• Fixed the default format of the SyslogHandler to avoid duplicating datetimes in syslog

1.1.0 (2012-04-23)

• Added Monolog\Logger::isHandling() to check if a handler will handle the given log level
• Added ChromePHPHandler
• Added MongoDBHandler
• Added GelfHandler (for use with Graylog2 servers)
• Added SocketHandler (for use with syslog-ng for example)
• Added NormalizerFormatter
• Added the possibility to change the activation strategy of the FingersCrossedHandler
• Added possibility to show microseconds in logs
• Added server and referer to WebProcessor output

1.0.2 (2011-10-24)

• Fixed bug in IE with large response headers and FirePHPHandler

1.0.1 (2011-08-25)

• Added MemoryPeakUsageProcessor and MemoryUsageProcessor
• Added Monolog\Logger::getName() to get a logger's channel name

1.0.0 (2011-07-06)

• Added IntrospectionProcessor to get info from where the logger was called
• Fixed WebProcessor in CLI

1.0.0-RC1 (2011-07-01)

• Initial release