#php-log version 1.0
--feature
    ·multi-level
        #debug,info,warning,exception,alert,error
    ·transaction
        #support transaction like databases
    ·multi-opt-log-format
        #look usage
    ·multi-storage
        #file,redis
    .namespace

--usage
    -require_once 'Logger.php';
    -$logger = new \PhpLog\Logger('log.txt');
    -$logger->setLevel(\PhpLog\Library\Constant::INFO);
        #beyond info will be record,debug would not be record
    -$formatter = new \PhpLog\Library\Formatter('');
    -$formatter->setFormat('[%type%][%date%][%pid%][%point%] %message%');
        #type:log type.like debug,info
        #date:date time
        #point:log point
        #pid:process id
        #message:log info
    -$formatter->setDateFormat('Y-m-d');
        #date formate:look http://php.net/manual/zh/function.date.php
    -$logger->setFormatter($formatter);
        #set a format for logger
    -$logger->startTransaction();
        #if you start transaction,the log will be record on memory.the log will
         write file after the logger submit
    -$logger->info('s');
        # write [info] message
    -$log->submit();
        # submit your transaction

--configuration
    #config in init.php
    -PHP_LOG_STORAGE_TYPE
        #where do you want your log to be stored
    #if you handle is redis,you maybe config two constant in init.php
        -PHP_LOG_REDIS_HOST
        -PHP_LOG_REDIS_PORT