记录一下static类型的bug

      try{
            static $instances;
            if(!isset($instances)){
                $dbLink = new StatDBLink(
                    $this->options['db_host'],
                    $this->options['db_user'],
                    $this->options['db_pwd']
                    );
                $dbo = new StatDbo($dbLink);
                $dbo->isDebug = $this->isDebug();

                $tools = new StatTools($dbo);
                $ip = new StatIpLocation(__DIR__ . '/QQWry.Dat');
                $region = new StatArea();
                $instances = new StatLog($tools, $ip, $region);
            }

            $this->isDebug()
                && $this->log(var_export($data, true));

            $instances->add($data);
        } catch(Exception $e){
            $this->log($e->getMessage());
            $this->logError($e->getMessage());
            // 清理资源，在swoole下特别注意，经常unset()不需要的变量
            unset($instances);
            if(isset($dbLink)){
                $dbLink->close();
                unset($dbLink);
            }
        }

try{

static $instances;

if(!isset($instances)){

$dbLink = new StatDBLink(

$this->options['db_host'],

$this->options['db_user'],

$this->options['db_pwd']

);

$dbo = new StatDbo($dbLink);

$dbo->isDebug = $this->isDebug();

$tools = new StatTools($dbo);

$ip = new StatIpLocation(__DIR__ . '/QQWry.Dat');

$region = new StatArea();

$instances = new StatLog($tools, $ip, $region);

}

$this->isDebug()

&& $this->log(var_export($data, true));

$instances->add($data);

} catch(Exception $e){

$this->log($e->getMessage());

$this->logError($e->getMessage());

// 清理资源，在swoole下特别注意，经常unset()不需要的变量

unset($instances);

if(isset($dbLink)){

$dbLink->close();

unset($dbLink);

}

在发生Exception后，static类型的变量instances未被unset

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记录一下static类型的bug