PulseLogger

PulseLogger is a lightweight and easy-to-use PHP logging library.
It supports text and JSON logging, provides detailed log metadata, and follows the Singleton pattern for consistent logging across your application.

Features

Feature	Description
Singleton Logger	Consistent logging across the application. Calling getInstance() always returns the same logger instance.
TextFormatter & JsonFormatter	Supports both text and JSON output.
Configurable Log Path	The log path must be initialized once using init() before logging. Once set, it is used globally across your application, no need to re-initialize in controllers or classes.
Detailed Metadata	Timestamp, Level, Message, File, Class, Function, Request ID, Client IP.
JSON Lines	Each JSON entry is a single object, easy for programmatic processing.
Text Separator	Adds a separator line for readability in text logs.

Installation

PulseLogger can be installed via Composer in your project:

composer require pouyaniarmin/pulse-logger

Usage / Examples

Basic Setup

<?php
require_once "./vendor/autoload.php";

use Armin\PulseLogger\PulseLogger;

// Initialize logger with mandatory log path (once)
$logger = PulseLogger::getInstance();
$logger->init(__DIR__ . '/logs');

// Log an informational message in text format
$logger->info('text', 'Application started successfully.');

// Log an error message in JSON format
$logger->error('json', 'Failed to connect to the database.');

Example in a Class

<?php

class UserService
{
    public function fetchUserData(int $userId)
    {
        $logger = PulseLogger::getInstance();

        $logger->info('text', "Fetching user data for user ID: $userId");

        $url = "https://api.example.com/users/$userId";
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $response = curl_exec($ch);

        if (curl_errno($ch)) {
            // Logger path already initialized in bootstrap, no need to init again
            $logger->error('json', "Error fetching user data: " . curl_error($ch));
        } else {
            $logger->info('text', "User data fetched successfully for user ID: $userId");
        }

        curl_close($ch);
        return $response;
    }
}

// Usage example
$service = new UserService();
$userData = $service->fetchUserData(42);
echo $userData;

Log Files / Output

PulseLogger creates log files in your specified log directory.

• Text logs: logs/app.log

  • Each entry is formatted as key:value pairs
  • A separator line (--------------------------------------------------) is added between entries for readability

• JSON logs: logs/json.log

  • Each entry is a JSON object on a separate line (JSON Lines format)
  • Useful for processing logs programmatically or with tools like ELK stack

Contributing

Contributions to PulseLogger are welcome!

• Feel free to open issues if you find bugs or have feature requests.
• You can submit pull requests to improve the library or add new features.
• Please follow PSR-12 coding standards for PHP code.
• Make sure to write clear commit messages for your changes.

License

PulseLogger is licensed under the MIT License.

You are free to use, modify, and distribute this software, as long as you include the original license notice.