Logger.php

Logger.php

<?php

// Logger class
// see https://medium.com/@WC_/the-ultimate-guide-to-building-a-robust-logging-system-in-php-from-concept-to-deployment-05d46ac5800e
class Logger
{
	const INFO = 1;
	const WARNING = 2;
	const ERROR = 3;
	private static $logFilePath;
	
	public static function init($logFilePath)
	{
		self::$logFilePath = $logFilePath;
	}
	
	public static function log($message, $severity)
	{
		$timestamp = date('Y-m-d H:i:s');
		//$timestamp = date('Y-m-d H:i:s.u'); // Includes microseconds
		
		/*
		switch ($severity) {
			case self::DEBUG:
			// Handle debug messages
			break;
			case self::INFO:
			// Handle info messages
			break;
			// ... handle other severity levels ...
		}
		*/
		$logMessage = "[$timestamp] [$severity] $message\n";
		$fileHandle = fopen(self::$logFilePath, 'a');
		fwrite($fileHandle, $logMessage);
		fclose($fileHandle);
	}
	
	
	public static function info($message)
	{
    if(is_array($message)){
		  	$message = "is array: ".print_r($message,true);
		}
		self::log($message, self::INFO);
	}
	
	public static function warning($message)
	{
    if(is_array($message)){
        $message = "is array: ".print_r($message,true);
    }
		self::log($message, self::WARNING);
	}
	
	public static function error($message)
	{
    if(is_array($message)){
        $message = "is array: ".print_r($message,true);
    }
		self::log($message, self::ERROR);
	}
	
	public static function logException(Exception $e)
	{
		$message = "Exception: " . $e->getMessage() . "\nStack Trace:\n" . $e->getTraceAsString();
		self::log($message, self::ERROR);
	}
}


/*
usage:
// Initialize the logger
Logger::init('application.log');
// Log some messages
Logger::info('Application started');
Logger::warning('Database connection failed');
Logger::error('Critical error: Out of memory');


*/