<?php class Logger { private static $instance; private $adapter; const LOG_DEST_SQL = "sql"; const LOG_DEST_STDOUT = "stdout"; const LOG_DEST_SYSLOG = "syslog"; const ERROR_NAMES = [ 1 => 'E_ERROR', 2 => 'E_WARNING', 4 => 'E_PARSE', 8 => 'E_NOTICE', 16 => 'E_CORE_ERROR', 32 => 'E_CORE_WARNING', 64 => 'E_COMPILE_ERROR', 128 => 'E_COMPILE_WARNING', 256 => 'E_USER_ERROR', 512 => 'E_USER_WARNING', 1024 => 'E_USER_NOTICE', 2048 => 'E_STRICT', 4096 => 'E_RECOVERABLE_ERROR', 8192 => 'E_DEPRECATED', 16384 => 'E_USER_DEPRECATED', 32767 => 'E_ALL']; static function log_error(int $errno, string $errstr, string $file, int $line, $context) { return self::get_instance()->_log_error($errno, $errstr, $file, $line, $context); } private function _log_error($errno, $errstr, $file, $line, $context) { //if ($errno == E_NOTICE) return false; if ($this->adapter) return $this->adapter->log_error($errno, $errstr, $file, $line, $context); else return false; } static function log(int $errno, string $errstr, $context = "") { return self::get_instance()->_log($errno, $errstr, $context); } private function _log(int $errno, string $errstr, $context = "") { if ($this->adapter) return $this->adapter->log_error($errno, $errstr, '', 0, $context); else return user_error($errstr, $errno); } private function __clone() { // } function __construct() { switch (Config::get(Config::LOG_DESTINATION)) { case self::LOG_DEST_SQL: $this->adapter = new Logger_SQL(); break; case self::LOG_DEST_SYSLOG: $this->adapter = new Logger_Syslog(); break; case self::LOG_DEST_STDOUT: $this->adapter = new Logger_Stdout(); break; default: $this->adapter = false; } if ($this->adapter && !implements_interface($this->adapter, "Logger_Adapter")) user_error("Adapter for LOG_DESTINATION: " . Config::LOG_DESTINATION . " does not implement required interface.", E_USER_ERROR); } private static function get_instance() : Logger { if (self::$instance == null) self::$instance = new self(); return self::$instance; } static function get() : Logger { user_error("Please don't use Logger::get(), call Logger::log(...) instead.", E_USER_DEPRECATED); return self::get_instance(); } }