log.php
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<?php
//以下为日志
interface ILogHandler
{
public function write($msg);
}
class CLogFileHandler implements ILogHandler
{
private $handle = null;
public function __construct($file = '')
{
$this->handle = fopen($file,'a');
}
public function write($msg)
{
fwrite($this->handle, $msg, 4096);
}
public function __destruct()
{
fclose($this->handle);
}
}
class Log
{
private $handler = null;
private $level = 15;
private static $instance = null;
private function __construct(){}
private function __clone(){}
public static function Init($handler = null,$level = 15)
{
if(!self::$instance instanceof self)
{
self::$instance = new self();
self::$instance->__setHandle($handler);
self::$instance->__setLevel($level);
}
return self::$instance;
}
private function __setHandle($handler){
$this->handler = $handler;
}
private function __setLevel($level)
{
$this->level = $level;
}
public static function DEBUG($msg)
{
self::$instance->write(1, $msg);
}
public static function WARN($msg)
{
self::$instance->write(4, $msg);
}
public static function ERROR($msg)
{
$debugInfo = debug_backtrace();
$stack = "[";
foreach($debugInfo as $key => $val){
if(array_key_exists("file", $val)){
$stack .= ",file:" . $val["file"];
}
if(array_key_exists("line", $val)){
$stack .= ",line:" . $val["line"];
}
if(array_key_exists("function", $val)){
$stack .= ",function:" . $val["function"];
}
}
$stack .= "]";
self::$instance->write(8, $stack . $msg);
}
public static function INFO($msg)
{
self::$instance->write(2, $msg);
}
private function getLevelStr($level)
{
switch ($level)
{
case 1:
return 'debug';
break;
case 2:
return 'info';
break;
case 4:
return 'warn';
break;
case 8:
return 'error';
break;
default:
}
}
protected function write($level,$msg)
{
if(($level & $this->level) == $level )
{
$msg = '['.date('Y-m-d H:i:s').']['.$this->getLevelStr($level).'] '.$msg."\n";
$this->handler->write($msg);
}
}
}