Monolog StderrColorFormatter using Collision\ConsoleColor

logging.php

<?php

// config/logging.php

return [
    'channels' => [
        'stack' => [
            'driver' => 'stack',
            'channels' => ['stderr-color', 'daily'],
        ],
        'stderr-color' => [
            'driver' => 'monolog',
            'handler' => StreamHandler::class,
            'with' => ['stream' => 'php://stderr'],
            'formatter' => StderrColorFormatter::class,
        ],
    ],
];

StderrColorFormatter.php

<?php

namespace Luchaos\MonologFormatter;

use Monolog\Formatter\LineFormatter;
use NunoMaduro\Collision\ConsoleColor;
use Psr\Log\LogLevel;

class StderrColorFormatter extends LineFormatter
{
    public const SIMPLE_FORMAT = "[%datetime%] %message% %context% %extra%\n";

    /**
     * @see \NunoMaduro\Collision\ConsoleColor::STYLES
     */
    private const STYLES = [
        '[%datetime%]' => 'magenta',
        '%context%' => 'light_green',
        '%message%' => [
            LogLevel::DEBUG => 'none',
            LogLevel::INFO => 'green',
            LogLevel::NOTICE => 'blue',
            LogLevel::WARNING => 'yellow',
            LogLevel::ERROR => ['red'],
            LogLevel::CRITICAL => ['bg_red', 'white'],
            LogLevel::ALERT => ['bg_red', 'white'],
            LogLevel::EMERGENCY => ['bg_red', 'white'],
        ],
    ];

    private ConsoleColor $color;

    private bool $showDate;

    public function __construct(
        ?string $format = null,
        ?string $dateFormat = 'Y-m-d H:i:s',
        bool $allowInlineLineBreaks = false,
        bool $ignoreEmptyContextAndExtra = true,
        bool $showDate = true
    ) {
        parent::__construct($format, $dateFormat, $allowInlineLineBreaks, $ignoreEmptyContextAndExtra);

        $this->color = new ConsoleColor();
        $this->showDate = $showDate;
    }

    public function format(array $record): string
    {
        $this->format = self::SIMPLE_FORMAT;

        if (!$this->showDate) {
            $this->format = str_replace('[%datetime%] ', '', $this->format);
        }

        foreach (self::STYLES as $key => $styled) {
            $this->format = str_replace(
                $key,
                $this->color->apply($this->styles($key, mb_strtolower($record['level_name'])), $key),
                $this->format
            );
        }

        return parent::format($record);
    }

    private function styles(string $key, ?string $modifier = null): array
    {
        return (array) (self::STYLES[$key][$modifier] ?? self::STYLES[$key] ?? 'none');
    }
}

UsingColoredStderrLogging.php

<?php

namespace App\Actions;

use Illuminate\Support\Facades\Log;

class UsingColoredStderrLogging
{
    public function __invoke() 
    {
        Log::debug('Debug', ['some' => 'context']);
        Log::debug('Info', ['some' => 'context']);
        Log::debug('Notice', ['some' => 'context']);
        Log::debug('Warning', ['some' => 'context']);
        Log::debug('Error', ['some' => 'context']);
        Log::debug('Critical', ['some' => 'context']);
        Log::debug('Alert', ['some' => 'context']);
        Log::debug('Emergency', ['some' => 'context']);
    }
}