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A Simple Logging Class For PHP
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README.markdown

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:

composer require katzgrau/klogger:1.0.*

In your composer.json:

{
    "require": {
        "katzgrau/klogger": "1.0.*"
    }
}

Basic Usage

<?php

require 'vendor/autoload.php';

$users = [
    [
        'name' => 'Kenny Katzgrau',
        'username' => 'katzgrau',
    ],
    [
        'name' => 'Dan Horrigan',
        'username' => 'dhrrgn',
    ],
];

$logger = new Katzgrau\KLogger\Logger(__DIR__.'/logs');
$logger->info('Returned a million search results');
$logger->error('Oh dear.');
$logger->debug('Got these users from the Database.', $users);

Output

[2014-03-20 3:35:43.762437] [INFO] Returned a million search results
[2014-03-20 3:35:43.762578] [ERROR] Oh dear.
[2014-03-20 3:35:43.762795] [DEBUG] Got these users from the Database.
    0: array(
        'name' => 'Kenny Katzgrau',
        'username' => 'katzgrau',
    )
    1: array(
        'name' => 'Dan Horrigan',
        'username' => 'dhrrgn',
    )

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

<?php
use Psr\Log\LogLevel;

// These are in order of highest priority to lowest.
LogLevel::EMERGENCY;
LogLevel::ALERT;
LogLevel::CRITICAL;
LogLevel::ERROR;
LogLevel::WARNING;
LogLevel::NOTICE;
LogLevel::INFO;
LogLevel::DEBUG;

Example

<?php
// The 
$logger = new Katzgrau\KLogger\Logger('/var/log/', Psr\Log\LogLevel::WARNING);
$logger->error('Uh Oh!'); // Will be logged
$logger->info('Something Happened Here'); // Will be NOT logged

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 NJ

Additionally, it's been used in numerous projects, both commercial and personal.

Special Thanks

Special thanks to all contributors:

License

The MIT License

Copyright (c) 2008-2014 Kenny Katzgrau katzgrau@gmail.com

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.

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