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Informations about the package log

Yii

Yii Logging Library


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This package provides a PSR-3 compatible logging library. It is used extensively in the Yii Framework but it can also be used as a separate package.

The logger sends or passes messages to multiple targets. Each target may filter these messages according to their severity level, and category, and then export them to some medium such as a file, an email or a syslog.

Requirements

Installation

The package can be installed with Composer:

General usage

Creating a logger:

Writing logs:

Message Flushing and Exporting

Log messages are collected and stored in memory. To limit memory consumption, the logger will flush the recorded messages to the log targets each time a certain number of log messages accumulate. You can customize this number by calling the \Yiisoft\Log\Logger::setFlushInterval() method:

Each log target also collects and stores messages in memory. Message exporting in a target follows the same principle as in the logger. To change the number of stored messages, call the \Yiisoft\Log\Target::setExportInterval() method:

Note: All message flushing and exporting also occurs when the application ends.

Logging targets

This package contains two targets:

Extra logging targets are implemented as separate packages:

Context providers

Context providers are used to provide additional context data for log messages. You can define your own context provider in the Logger constructor:

Out of the box, the following context providers are available:

By default, the logger uses the built-in SystemContextProvider.

SystemContextProvider

The SystemContextProvider adds the following data to the context:

Yiisoft\Log\ContextProvider\SystemContextProvider constructor parameters:

An example of custom parameters' usage:

CommonContextProvider

The CommonContextProvider allows the adding of additional common information to the log context, for example:

CompositeContextProvider

The CompositeContextProvider allows the combining of multiple context providers into one, for example:

Documentation

If you need help or have a question, the Yii Forum is available. You may also check out other Yii Community Resources.

License

The Yii Logging Library is free software. It is released under the terms of the BSD License. Please see LICENSE for more information.

Maintained by Yii Software.

Support the project

Open Collective

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All versions of log with dependencies

PHP Build Version
Package Version
Requires php Version ^8.0
psr/log Version ^2.0|^3.0
yiisoft/var-dumper Version ^1.0
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