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+Monolog - Logging for PHP 5.3+ [![Build Status](https://secure.travis-ci.org/Seldaek/monolog.png)](http://travis-ci.org/Seldaek/monolog)
+==============================
+
+[![Total Downloads](https://poser.pugx.org/monolog/monolog/downloads.png)](https://packagist.org/packages/monolog/monolog)
+[![Latest Stable Version](https://poser.pugx.org/monolog/monolog/v/stable.png)](https://packagist.org/packages/monolog/monolog)
+[![Reference Status](https://www.versioneye.com/php/monolog:monolog/reference_badge.svg)](https://www.versioneye.com/php/monolog:monolog/references)
+
+
+Monolog sends your logs to files, sockets, inboxes, databases and various
+web services. See the complete list of handlers below. Special handlers
+allow you to build advanced logging strategies.
+
+This library implements the [PSR-3](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md)
+interface that you can type-hint against in your own libraries to keep
+a maximum of interoperability. You can also use it in your applications to
+make sure you can always use another compatible logger at a later time.
+As of 1.11.0 Monolog public APIs will also accept PSR-3 log levels.
+Internally Monolog still uses its own level scheme since it predates PSR-3.
+
+Usage
+-----
+
+Install the latest version with `composer require monolog/monolog`
+
+```php
+<?php
+
+use Monolog\Logger;
+use Monolog\Handler\StreamHandler;
+
+// create a log channel
+$log = new Logger('name');
+$log->pushHandler(new StreamHandler('path/to/your.log', Logger::WARNING));
+
+// add records to the log
+$log->addWarning('Foo');
+$log->addError('Bar');
+```
+
+Core Concepts
+-------------
+
+Every `Logger` instance has a channel (name) and a stack of handlers. Whenever
+you add a record to the logger, it traverses the handler stack. Each handler
+decides whether it fully handled the record, and if so, the propagation of the
+record ends there.
+
+This allows for flexible logging setups, for example having a `StreamHandler` at
+the bottom of the stack that will log anything to disk, and on top of that add
+a `MailHandler` that will send emails only when an error message is logged.
+Handlers also have a `$bubble` property which defines whether they block the
+record or not if they handled it. In this example, setting the `MailHandler`'s
+`$bubble` argument to false means that records handled by the `MailHandler` will
+not propagate to the `StreamHandler` anymore.
+
+You can create many `Logger`s, each defining a channel (e.g.: db, request,
+router, ..) and each of them combining various handlers, which can be shared
+or not. The channel is reflected in the logs and allows you to easily see or
+filter records.
+
+Each Handler also has a Formatter, a default one with settings that make sense
+will be created if you don't set one. The formatters normalize and format
+incoming records so that they can be used by the handlers to output useful
+information.
+
+Custom severity levels are not available. Only the eight
+[RFC 5424](http://tools.ietf.org/html/rfc5424) levels (debug, info, notice,
+warning, error, critical, alert, emergency) are present for basic filtering
+purposes, but for sorting and other use cases that would require
+flexibility, you should add Processors to the Logger that can add extra
+information (tags, user ip, ..) to the records before they are handled.
+
+Log Levels
+----------
+
+Monolog supports the logging levels described by [RFC 5424](http://tools.ietf.org/html/rfc5424).
+
+- **DEBUG** (100): Detailed debug information.
+
+- **INFO** (200): Interesting events. Examples: User logs in, SQL logs.
+
+- **NOTICE** (250): Normal but significant events.
+
+- **WARNING** (300): Exceptional occurrences that are not errors. Examples:
+ Use of deprecated APIs, poor use of an API, undesirable things that are not
+ necessarily wrong.
+
+- **ERROR** (400): Runtime errors that do not require immediate action but
+ should typically be logged and monitored.
+
+- **CRITICAL** (500): Critical conditions. Example: Application component
+ unavailable, unexpected exception.
+
+- **ALERT** (550): Action must be taken immediately. Example: Entire website
+ down, database unavailable, etc. This should trigger the SMS alerts and wake
+ you up.
+
+- **EMERGENCY** (600): Emergency: system is unusable.
+
+Docs
+====
+
+**See the `doc` directory for more detailed documentation.
+The following is only a list of all parts that come with Monolog.**
+
+Handlers
+--------
+
+### Log to files and syslog
+
+- _StreamHandler_: Logs records into any PHP stream, use this for log files.
+- _RotatingFileHandler_: Logs records to a file and creates one logfile per day.
+ It will also delete files older than `$maxFiles`. You should use
+ [logrotate](http://linuxcommand.org/man_pages/logrotate8.html) for high profile
+ setups though, this is just meant as a quick and dirty solution.
+- _SyslogHandler_: Logs records to the syslog.
+- _ErrorLogHandler_: Logs records to PHP's
+ [`error_log()`](http://docs.php.net/manual/en/function.error-log.php) function.
+
+### Send alerts and emails
+
+- _NativeMailerHandler_: Sends emails using PHP's
+ [`mail()`](http://php.net/manual/en/function.mail.php) function.
+- _SwiftMailerHandler_: Sends emails using a [`Swift_Mailer`](http://swiftmailer.org/) instance.
+- _PushoverHandler_: Sends mobile notifications via the [Pushover](https://www.pushover.net/) API.
+- _HipChatHandler_: Logs records to a [HipChat](http://hipchat.com) chat room using its API.
+- _FlowdockHandler_: Logs records to a [Flowdock](https://www.flowdock.com/) account.
+- _SlackHandler_: Logs records to a [Slack](https://www.slack.com/) account.
+- _MandrillHandler_: Sends emails via the Mandrill API using a [`Swift_Message`](http://swiftmailer.org/) instance.
+- _FleepHookHandler_: Logs records to a [Fleep](https://fleep.io/) conversation using Webhooks.
+
+### Log specific servers and networked logging
+
+- _SocketHandler_: Logs records to [sockets](http://php.net/fsockopen), use this
+ for UNIX and TCP sockets. See an [example](https://github.com/Seldaek/monolog/blob/master/doc/sockets.md).
+- _AmqpHandler_: Logs records to an [amqp](http://www.amqp.org/) compatible
+ server. Requires the [php-amqp](http://pecl.php.net/package/amqp) extension (1.0+).
+- _GelfHandler_: Logs records to a [Graylog2](http://www.graylog2.org) server.
+- _CubeHandler_: Logs records to a [Cube](http://square.github.com/cube/) server.
+- _RavenHandler_: Logs records to a [Sentry](http://getsentry.com/) server using
+ [raven](https://packagist.org/packages/raven/raven).
+- _ZendMonitorHandler_: Logs records to the Zend Monitor present in Zend Server.
+- _NewRelicHandler_: Logs records to a [NewRelic](http://newrelic.com/) application.
+- _LogglyHandler_: Logs records to a [Loggly](http://www.loggly.com/) account.
+- _RollbarHandler_: Logs records to a [Rollbar](https://rollbar.com/) account.
+- _SyslogUdpHandler_: Logs records to a remote [Syslogd](http://www.rsyslog.com/) server.
+- _LogEntriesHandler_: Logs records to a [LogEntries](http://logentries.com/) account.
+
+### Logging in development
+
+- _FirePHPHandler_: Handler for [FirePHP](http://www.firephp.org/), providing
+ inline `console` messages within [FireBug](http://getfirebug.com/).
+- _ChromePHPHandler_: Handler for [ChromePHP](http://www.chromephp.com/), providing
+ inline `console` messages within Chrome.
+- _BrowserConsoleHandler_: Handler to send logs to browser's Javascript `console` with
+ no browser extension required. Most browsers supporting `console` API are supported.
+
+### Log to databases
+
+- _RedisHandler_: Logs records to a [redis](http://redis.io) server.
+- _MongoDBHandler_: Handler to write records in MongoDB via a
+ [Mongo](http://pecl.php.net/package/mongo) extension connection.
+- _CouchDBHandler_: Logs records to a CouchDB server.
+- _DoctrineCouchDBHandler_: Logs records to a CouchDB server via the Doctrine CouchDB ODM.
+- _ElasticSearchHandler_: Logs records to an Elastic Search server.
+- _DynamoDbHandler_: Logs records to a DynamoDB table with the [AWS SDK](https://github.com/aws/aws-sdk-php).
+
+### 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.
+- _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.
+- _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.
+- _GroupHandler_: This handler groups other handlers. Every record received is
+ sent to all the handlers it is configured with.
+- _FilterHandler_: This handler only lets records of the given levels through
+ to the wrapped handler.
+- _SamplingHandler_: Wraps around another handler and lets you sample records
+ if you only want to store some of them.
+- _NullHandler_: Any record it can handle will be thrown away. This can be used
+ to put on top of an existing handler stack to disable it temporarily.
+- _PsrHandler_: Can be used to forward log records to an existing PSR-3 logger
+- _TestHandler_: Used for testing, it records everything that is sent to it and
+ has accessors to read out the information.
+
+Formatters
+----------
+
+- _LineFormatter_: Formats a log record into a one-line string.
+- _HtmlFormatter_: Used to format log records into a human readable html table, mainly suitable for emails.
+- _NormalizerFormatter_: Normalizes objects/resources down to strings so a record can easily be serialized/encoded.
+- _ScalarFormatter_: Used to format log records into an associative array of scalar values.
+- _JsonFormatter_: Encodes a log record into json.
+- _WildfireFormatter_: Used to format log records into the Wildfire/FirePHP protocol, only useful for the FirePHPHandler.
+- _ChromePHPFormatter_: Used to format log records into the ChromePHP format, only useful for the ChromePHPHandler.
+- _GelfMessageFormatter_: Used to format log records into Gelf message instances, only useful for the GelfHandler.
+- _LogstashFormatter_: Used to format log records into [logstash](http://logstash.net/) event json, useful for any handler listed under inputs [here](http://logstash.net/docs/latest).
+- _ElasticaFormatter_: Used to format log records into an Elastica\Document object, only useful for the ElasticSearchHandler.
+- _LogglyFormatter_: Used to format log records into Loggly messages, only useful for the LogglyHandler.
+- _FlowdockFormatter_: Used to format log records into Flowdock messages, only useful for the FlowdockHandler.
+- _MongoDBFormatter_: Converts \DateTime instances to \MongoDate and objects recursively to arrays, only useful with the MongoDBHandler.
+
+Processors
+----------
+
+- _IntrospectionProcessor_: Adds the line/file/class/method from which the log call originated.
+- _WebProcessor_: Adds the current request URI, request method and client IP to a log record.
+- _MemoryUsageProcessor_: Adds the current memory usage to a log record.
+- _MemoryPeakUsageProcessor_: Adds the peak memory usage to a log record.
+- _ProcessIdProcessor_: Adds the process id to a log record.
+- _UidProcessor_: Adds a unique identifier to a log record.
+- _GitProcessor_: Adds the current git branch and commit to a log record.
+- _TagProcessor_: Adds an array of predefined tags to a log record.
+
+Utilities
+---------
+
+- _Registry_: The `Monolog\Registry` class lets you configure global loggers that you
+ can then statically access from anywhere. It is not really a best practice but can
+ help in some older codebases or for ease of use.
+- _ErrorHandler_: The `Monolog\ErrorHandler` class allows you to easily register
+ a Logger instance as an exception handler, error handler or fatal error handler.
+- _ErrorLevelActivationStrategy_: Activates a FingersCrossedHandler when a certain log
+ level is reached.
+- _ChannelLevelActivationStrategy_: Activates a FingersCrossedHandler when a certain
+ log level is reached, depending on which channel received the log record.
+
+About
+=====
+
+Requirements
+------------
+
+- Monolog works with PHP 5.3 or above, and is also tested to work with HHVM.
+
+Submitting bugs and feature requests
+------------------------------------
+
+Bugs and feature request are tracked on [GitHub](https://github.com/Seldaek/monolog/issues)
+
+Frameworks Integration
+----------------------
+
+- Frameworks and libraries using [PSR-3](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md)
+ can be used very easily with Monolog since it implements the interface.
+- [Symfony2](http://symfony.com) comes out of the box with Monolog.
+- [Silex](http://silex.sensiolabs.org/) comes out of the box with Monolog.
+- [Laravel 4](http://laravel.com/) comes out of the box with Monolog.
+- [PPI](http://www.ppi.io/) comes out of the box with Monolog.
+- [CakePHP](http://cakephp.org/) is usable with Monolog via the [cakephp-monolog](https://github.com/jadb/cakephp-monolog) plugin.
+- [Slim](http://www.slimframework.com/) is usable with Monolog via the [Slim-Monolog](https://github.com/Flynsarmy/Slim-Monolog) log writer.
+- [XOOPS 2.6](http://xoops.org/) comes out of the box with Monolog.
+- [Aura.Web_Project](https://github.com/auraphp/Aura.Web_Project) comes out of the box with Monolog.
+
+Author
+------
+
+Jordi Boggiano - <j.boggiano@seld.be> - <http://twitter.com/seldaek><br />
+See also the list of [contributors](https://github.com/Seldaek/monolog/contributors) which participated in this project.
+
+License
+-------
+
+Monolog is licensed under the MIT License - see the `LICENSE` file for details
+
+Acknowledgements
+----------------
+
+This library is heavily inspired by Python's [Logbook](http://packages.python.org/Logbook/)
+library, although most concepts have been adjusted to fit to the PHP world.