PHP通过callback处理程序打印log操作

SyncTask 使用说明
new 时，传入需要处理的模块名，对应到表 sync_task_config
方法：run  方法 传入 callback
done 方法 结束程序运行，并打印log日志
属性：config 包括本次项目（guideline） 的配置信息，通过此数组，可以获取上一次的更新时间

sync_script.php
```php
<?php 
require_once('SyncTask.php');
$sync = new SyncTask('guideline');
$sync->run(function($task) {

if (xx) {
		return $task->done();
	}
	
 	echo $task->config . "\n";

// 	return 'world';
	return array('10', '20');
});
?>

```

SyncTask.php
```php
<?php 
if (PHP_SAPI != 'cli') {
	exit();
}

class SyncTask {
	public $config;
	private $startedAt;
	private $finishedAt;
	private $run_time;
	private $updated;
	private $created;
	
	public function __construct($script) {
		$this->config = array('enabled'=>'Y', 'is_run'=>'N');
	}

public function run($fn) {
		$this->start_log();
		$this->startedAt = microtime(true);
		
		if($this->config['enabled'] == 'N') {
			Log::info("同步已关闭...");
			return $this->done();
		}
		
		if($this->config['is_run'] == 'Y') {
			Log::info("正在运行...");
			return $this->done();
		}
		
		try {
			list($this->updated, $this->created) = $fn($this);
		} catch (Exception $e) {
			Log::error($e);
		}
		$this->done();
	}

public function done() {
		$this->end_log();
	}
	
	private function start_log() {
		Log::info($_SERVER['SCRIPT_NAME'] . ' start...');
	}
	
	private function end_log() {
		$this->run_time = $this->costTime();
		Log::info('updated records:' . sg($this->updated,0));
		Log::info('created records:' . sg($this->created,0));
		Log::info('run time:' . $this->run_time . 'ms');
		Log::info($_SERVER['SCRIPT_NAME'] . ' end.');
	}
	
	private function costTime($str_format = false) {
		$this->finishedAt = microtime(TRUE);
		$cost = $this->finishedAt - $this->startedAt;
		$cost = $cost * 1000;
		if($str_format) {
			return number_format($cost, 3) . 'ms';
		} else {
			return number_format($cost, 3, '.', '');
		}
	}
	
}
?>

```

BaseScript.php
```php
<?php

class BaseScript {
	
	public static $start_time;
	const NEED_COMMON_SCRIPT = true;
	const NEED_COMMON_WARNING = true;
	
	public static function init() {
		self::$start_time = microtime(TRUE);
		if(!self::NEED_COMMON_SCRIPT) {
			return false;
		}
		self::log($_SERVER['SCRIPT_NAME'] . ' start...');
		self::register();
	}
	
	public static function register() {
		if(!self::NEED_COMMON_WARNING) {
			return false;
		}
		register_shutdown_function(self::run());
	}
	
	public static function run() {
		$cost = self::costTime(self::$start_time);
		if ($cost > 2 * 60 * 1000) {
			$msg = '【致命错误】程序运行时间超过2分钟！(' . $cost . ")\n" . $_SERVER['SCRIPT_NAME'];
			self::error($msg);
		} else if ($cost > 30 * 1000) {
			$msg = '【严重警告】程序运行时间超过30秒！(' . $cost . ")\n" . $_SERVER['SCRIPT_NAME'];
			self::error($msg);
		} else if ($cost > 10 * 1000) {
			$msg = '【警告】程序运行时间超过10秒！(' . $cost . ")\n" . $_SERVER['SCRIPT_NAME'];
			self::error($msg);
		}
		self::end();
	}
	
	public static function end() {
		self::log('run time:' . self::costTime(self::$start_time));
		self::log($_SERVER['SCRIPT_NAME'] . ' end.');
	}
	
	public static function costTime($start, $str_format = true) {
		$cost = microtime(TRUE) - $start;
		$cost = $cost * 1000;
		if($str_format) {
			return number_format($cost, 3) . 'ms';
		} else {
			return number_format($cost, 3, '.', '');
		}
	}
	
	public static function log($msg) {
		Log::info($msg);
	}
	
	public static function error($msg) {
		Log::error($msg);
	}
}
?>
```

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