PHP Logger based on Psr/Log with configurable filtering
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README.md

Logger

PHP Package for easy logging and error catching. FileLogger class based on Psr/Log helps to filter what to log. ErrorScreen class helps to catch PHP Warnings and Fatal errors and display correct error screen to a user. ApplicationLogger is a trait to include logger in different classes very easy

Installation

Using composer: gelembjuk/logger require: {"gelembjuk/logger": "*"}

Configuration

Configuration is done in run time with a constructor options (as hash argument)

Configure FileLogger

logfile path to your log file (where to write logs) groupfilter list of groups of events to log. all means log everything. Groups separated with | symbol

$logger1 = new Gelembjuk\Logger\FileLogger(
	array(
		'logfile' => $logfile,  // path to your log file (where to write logs)
		'groupfilter' => 'group1|group2|group3'  // list of groups of events to log. `all` means log everything
	));

Configure ErrorScreen

catchwarnings - (true|false) . If true then user error handler is set to catch warnings

catchfatals - (true|false) . If true then fatal errors are catched. Use to log error and show normal error screen

catchexceptions - (true|false) . If true then uncatched exceptions will be catched by the object. Use this to catch exceptions missed in any try {} catch block

showwarningmessage - (true|false) . If true then error screen is displayed in case of warning. If is false then error is only logged

showfatalmessage - (true|false) . Display error screen for fatal errors. If false then only log is dine. User will see standard fatal error in this case

viewformat - set vaue for the viewformat variable. Possible values: html, json, xml, http . html is default value

showtrace - (true|false). Switcher to know if to show error trace for a user as part of error screen

commonerrormessage - string Common error message to show to a user when error happens

logger - Object of FileLogger class

loggeroptions - Options to create new FileLogger object


$errors = new Gelembjuk\Logger\ErrorScreen(
		array(
			'logger' => $logger1 /*create before*/,
			'viewformat' => 'html',
			'catchwarnings' => true,
			'catchfatals' => true,
			'showfatalmessage' => true,
			'commonerrormessage' => 'Sorry, somethign went wrong. We will solve ASAP'
		)
	);

Usage

FileLogger


require '../vendor/autoload.php';

$logger1 = new Gelembjuk\Logger\FileLogger(
	array(
		'logfile' => '/tmp/log.txt',
		'groupfilter' => 'all' // log everything this time
	));

// do test log write
$logger1->debug('Test log',array('group' => 'test'));

$logger1->setGroupFilter('group1|group2'); // after this only group1 and group2 events are logged

$logger1->debug('This message will not be in logs as `test` is out of filter',array('group' => 'test'));

ApplicationLogger trait


require '../vendor/autoload.php';

class A {
}

class B extends A {
	// include the trait to have logging functionality in this class
	use Gelembjuk\Logger\ApplicationLogger;
	
	public function __construct($logger) {
		$this->setLogger($logger);

		$this->logQ('B object create','construct|B');
	}

	public function doSomething() {
		$this->logQ('doSomething() in B','B');
	}
}

class C {
	use Gelembjuk\Logger\ApplicationLogger;
	
	public function __construct($logger) {
		$this->setLogger($logger);

		$this->logQ('C object create','construct|C');
	}

	public function doOtherThing() {
		$this->logQ('oOtherThing() in C','C');
	}
}

$b = new B($logger1); // $logger1 is instance of FileLogger
$c = new C($logger1);

$b->doSomething();
$c->doOtherThing();

ErrorScreen


require '../vendor/autoload.php';

$errors = new Gelembjuk\Logger\ErrorScreen(
		array(
			'logger' => $logger1 /*created before*/,
			'viewformat' => 'html',
			'catchwarnings' => true,
			'catchfatals' => true,
			'showfatalmessage' => true,
			'commonerrormessage' => 'Sorry, somethign went wrong. We will solve ASAP'
		)
	);

// to catch exceptions on the top level of the app
try {
	// do something 
	
} catch (Exception $e) {
	$errors->processError($e);
}

// presume there was no exception
// now catch warning

// warning is raised and catched in errors object
// error message displayed to a user
include('not_existent_file.php'); 	

Author

Roman Gelembjuk (@gelembjuk)