144 lines
2.5 KiB
PHP
144 lines
2.5 KiB
PHP
<?php
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/**
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* NRE
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*
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* @author coderkun <olli@coderkun.de>
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* @copyright 2013 coderkun (http://www.coderkun.de)
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* @license http://www.gnu.org/licenses/gpl.html
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* @link http://www.coderkun.de/projects/nre
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*/
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namespace nre\core;
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/**
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* Class to log messages to different targets.
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*
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* @author coderkun <olli@coderkun.de>
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*/
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class Logger
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{
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/**
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* Log mode: Detect automatic
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*
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* @var int
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*/
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const LOGMODE_AUTO = 0;
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/**
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* Log mode: Print to screen
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*
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* @var int
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*/
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const LOGMODE_SCREEN = 1;
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/**
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* Log mode: Use PHP-logging mechanism
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*
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* @var int
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*/
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const LOGMODE_PHP = 2;
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/**
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* Do not auto-log to screen
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*
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* @var boolean
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*/
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private $autoLogToScreenDisabled = false;
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/**
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* Construct a new logger.
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*/
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public function __construct()
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{
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}
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/**
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* Log a message.
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*
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* @param string $message Message to log
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* @param int $logMode Log mode to use
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*/
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public function log($message, $logMode=self::LOGMODE_SCREEN)
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{
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// Choose log mode automatically
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if($logMode == self::LOGMODE_AUTO) {
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$logMode = $this->getAutoLogMode();
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}
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// Print message to screen
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if($logMode & self::LOGMODE_SCREEN) {
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$this->logToScreen($message);
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}
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// Use PHP-logging mechanism
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if($logMode & self::LOGMODE_PHP) {
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$this->logToPhp($message);
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}
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}
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/**
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* Disable logging to screen when the log mode is automatically
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* detected.
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*/
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public function disableAutoLogToScreen()
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{
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$this->autoLogToScreenDisabled = true;
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}
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/**
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* Print a message to screen.
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*
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* @param string $message Message to print
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*/
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private function logToScreen($message)
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{
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echo "$message<br>\n";
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}
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/**
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* Log a message by using PHP-logging mechanism.
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*
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* @param string $message Message to log
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*/
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private function logToPhp($message)
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{
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error_log($message, 0);
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}
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/**
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* Detect log mode automatically by distinguishing between
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* production and test environment.
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*
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* @return int Automatically detected log mode
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*/
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private function getAutoLogMode()
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{
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return ($this->isLocalhost() && !$this->autoLogToScreenDisabled) ? self::LOGMODE_SCREEN : self::LOGMODE_PHP;
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}
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/**
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* Detect if the server is running as localhost without domain.
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*
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* @return boolean Wheather server is running as localhost or not
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*/
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private function isLocalhost()
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{
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return ($_SERVER['SERVER_ADDR'] == '127.0.0.1' || $_SERVER['SERVER_ADDR'] = '::1');
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}
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}
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?>
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