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Informations about the package klogger
KLogger: Simple Logging for PHP
A project written by Kenny Katzgrau and Dan Horrigan.
About
KLogger is an easy-to-use PSR-3 compliant logging class for PHP. It isn't naive about file permissions (which is expected). It was meant to be a class that you could quickly include into a project and have working right away.
If you need a logger that supports PHP < 5.3, see past releases for KLogger versions < 1.0.0.
Installation
Composer
From the Command Line:
In your composer.json:
Basic Usage
Output
PSR-3 Compliant
KLogger is PSR-3
compliant. This means it implements the Psr\Log\LoggerInterface.
See Here for the interface definition.
Setting the Log Level Threshold
You can use the Psr\Log\LogLevel constants to set Log Level Threshold, so that
any messages below that level, will not be logged.
Default Level
The default level is DEBUG, which means everything will be logged.
Available Levels
Example
Additional Options
KLogger supports additional options via third parameter in the constructor:
Here's the full list:
| Option | Default | Description |
|---|---|---|
| dateFormat | 'Y-m-d G:i:s.u' | The format of the date in the start of the log lone (php formatted) |
| extension | 'txt' | The log file extension |
| filename | [prefix][date].[extension] | Set the filename for the log file. This overrides the prefix and extention options. |
| flushFrequency | false (disabled) |
How many lines to flush the output buffer after |
| prefix | 'log_' | The log file prefix |
| logFormat | false |
Format of log entries |
| appendContext | true |
When false, don't append context to log entries |
Log Formatting
The logFormat option lets you define what each line should look like and can contain parameters representing the date, message, etc.
When a string is provided, it will be parsed for variables wrapped in braces ({ and }) and replace them with the appropriate value:
| Parameter | Description |
|---|---|
| date | Current date (uses dateFormat option) |
| level | The PSR log level |
| level-padding | The whitespace needed to make this log level line up visually with other log levels in the log file |
| priority | Integer value for log level (see $logLevels) |
| message | The message being logged |
| context | JSON-encoded context |
Tab-separated
Same as default format but separates parts with tabs rather than spaces:
$logFormat = "[{date}]\t[{level}]\t{message}";Custom variables and static text
Inject custom content into log messages:
$logFormat = "[{date}] [$var] StaticText {message}";JSON
To output pure JSON, set appendContext to false and provide something like the below as the value of the logFormat option:
The output will look like:
{"datetime":"2015-04-16 10:28:41.186728","logLevel":"INFO","message":"Message content","context":"{"1":"foo","2":"bar"}"}Pretty Formatting with Level Padding
For the obsessive compulsive
$logFormat = "[{date}] [{level}]{level-padding} {message}";... or ...
$logFormat = "[{date}] [{level}{level-padding}] {message}";Why use KLogger?
Why not? Just drop it in and go. If it saves you time and does what you need,
go for it! Take a line from the book of our C-code fathers: "build upon the
work of others".
Who uses KLogger?
Klogger has been used in projects at:
* The University of Iowa
* The University of Laverne
* The New Jersey Institute of Technology
* Middlesex Hospital in NJAdditionally, it's been used in numerous projects, both commercial and personal.
Special Thanks
Special thanks to all contributors:
License
The MIT License
Copyright (c) 2008-2015 Kenny Katzgrau [email protected]
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
