PSR-3 logger for adding colors and indentation on PHP CLI output.

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v1.1.2 2013-07-03 09:20 UTC


Latest stable version Build Status Coverage Status

PSR-3 logger for adding colors and indentation on PHP CLI output.


Use tags and placeholder syntax to provide an easy way to color and indent PHP CLI output. PSR-3 compatibility allows graceful degradation when switching to another PSR-3 compliant logger.


  1. Declare some colors:
    $aConfig = array(
        'colors' => array(
            'debug'      => "\033[0;35m",
            'error'      => "\033[1;31m",
            'section'    => "\033[1;37m",
            'subsection' => "\033[1;33m",
            'ok'         => "\033[1;32m"
    $oLogger = new ColoredIndentedLogger($aConfig);
  1. Use them either by exploiting placeholder syntax with 'C.' prefix:
    $oLogger->info('{C.section}Start of new section');
    $oLogger->info('Result is {C.ok}OK');

Or by logging message with a level equals to a color key:

    $oLogger->debug('some debug information…');
    $oLogger->error(new \RuntimeException('Arghhhh!'));

It is even possible to specify color tag in the value of a placeholder:

    $oLogger->info('Result is {result}', array('result' => '{C.ok}OK'));

See below for demonstration.


You can control indentation level with indent and unindent tags:

  • default tags are '+++' and '---',
  • both usable at the beginning or at the end of any message,
  • one or more occurrences,
  • can be used alone.


$oLogger->info('Section A+++');
$oLogger->info('Step 1');
$oLogger->info('Step 2');
$oLogger->info('------Section B+++');

See below for demonstration.


Default configuration:

    'colors'               => array(),
    'base_indentation'     => "\033[0;30m┆\033[0m   ",
    'indent_tag'           => '+++',
    'unindent_tag'         => '---',
    'min_message_level'    => \Psr\Log\LogLevel::DEBUG,
    'reset_color_sequence' => "\033[0m",
    'color_tag_prefix'     => 'C.'


  • colors(array) Array of key/value pairs to associate bash color codes to color tags (see above).
  • base_indentation(string) Describe what is a simple indentation, e.g. "\t".
  • indent_tag(string) Tag usable at the start or at the end of the message to add one or more indentation level.
  • unindent_tag(string) Tag usable at the start or at the end of the message to remove one or more indentation level.
  • min_message_level(string) Threshold required to log message, must be defined in \Psr\Log\LogLevel.
  • reset_color_sequence(string) Concatenated sequence at the end of message when colors are used. For example: "\033[0m".
  • color_tag_prefix(string) Prefix used in placeholders to distinguish standard context from colors.


See demo.php script for an example:

$ php examples/demo.php

Here is the result:

result of demo.php


  1. Class autoloading and dependencies are managed by Composer so install it following the instructions on Composer: Installation - *nix or just run the following command:
$ curl -sS | php
  1. Add dependency to GAubry\Logger into require section of your composer.json:
        "require": {
            "geoffroy-aubry/logger": "1.*"

and run php composer.phar install from the terminal into the root folder of your project.

  1. Include Composer's autoloader and use the GAubry\Logger class:

    require_once 'vendor/autoload.php';
    use GAubry\Logger\ColoredIndentedLogger;

    $aConfig = array(…);
    $oLogger = new ColoredIndentedLogger($aConfig);



API documentation generated by ApiGen and included in the doc/api folder.

Copyrights & licensing

Licensed under the GNU Lesser General Public License v3 (LGPL version 3). See LICENSE file for details.

Change log

See CHANGELOG file for details.

Continuous integration

Build Status Coverage Status

Following commands are executed during each build and must report neither errors nor warnings:

  • Unit tests with PHPUnit:

    $ php vendor/bin/phpunit --configuration phpunit.xml
  • Coding standards with PHP CodeSniffer:

    $ php vendor/bin/phpcs --standard=PSR2 src/ tests/ -v
  • Code quality with PHP Mess Detector:

    $ php vendor/bin/phpmd src/ text codesize,design,unusedcode,naming,controversial

Git branching model

The git branching model used for development is the one described and assisted by twgit tool: