php error_log记录日志的使用方法--拿来即用,超简单

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对于PHP开发者来 说,一旦某个产品投入使用,应该立即将 display_errors选项关闭,以免因为这些错误所透露的路径、数据库连接、数据表等信息而遭到黑客攻击。但是,任何一个产品在投入使用后,都难 免会有错误出现,那么如何记录一些对开发者有用的错误报告呢?我们可以在单独的文本文件中将错误报告作为日志记录。错误日志的记录,可以帮助开发人员或者 管理人员查看系统是否存在问题。 如果需要将程序中的错误报告写入错误日志中,只要在PHP的配置文件中,将配置指令log_errors开启即可。错误 报告默认就会记录到Web服务器的日志文件里,例如记录到Apache服务器的错误日志文件error.log中。当然也可以记录错误日志到指定的文件中 或发送给系统syslog。

下面是直接封装OK的,直接调用即可。写入的信息样式如下:

[2018-07-24 10:27:43][debug] begin notify3
[2018-07-24 10:27:43][debug] call back:[]
[2018-07-24 10:27:43][debug] error:can shu cuo wu
[2018-07-24 14:11:47][debug] begin notify3
[2018-07-24 14:11:47][debug] call back:[]
[2018-07-24 14:11:47][debug] error:can shu cuo wu
[2018-07-24 14:11:48][debug] begin notify3
[2018-07-24 14:11:48][debug] call back:[]
[2018-07-24 14:11:48][debug] error:can shu cuo wu
[2018-07-24 14:11:48][debug] begin notify3
[2018-07-24 14:11:48][debug] call back:[]
[2018-07-24 14:11:48][debug] error:can shu cuo wu
[2018-07-24 14:11:48][debug] begin notify3
[2018-07-24 14:11:48][debug] call back:[]
[2018-07-24 14:11:48][debug] error:can shu cuo wu
[2018-07-24 14:11:48][debug] begin notify3
[2018-07-24 14:11:48][debug] call back:[]
[2018-07-24 14:11:48][debug] error:can shu cuo wu
[2018-07-24 19:16:22][debug] error:post data is empty
[2018-07-24 20:05:59][debug] error:post data is empty
[2018-07-24 20:06:00][debug] error:post data is empty
[2018-07-24 20:06:01][debug] error:post data is empty
[2018-07-24 20:06:06][debug] error:post data is empty
[2018-07-24 20:06:07][debug] error:post data is empty
[2018-07-24 20:06:07][debug] error:post data is empty
[2018-07-24 20:06:08][debug] error:post data is empty
[2018-07-24 21:27:16][debug] error:post data is empty
<?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."
";
			$this->handler->write($msg);
		}
	}
}

调用方法:

<?php
    $logDir = DISCUZ_ROOT."./source/plugin/vyuan/logs/";
    if(!is_dir($logDir)){
        mkdir($logDir, 0777,true);
    }else{
        chmod($logDir, 0777); 
    }

    //初始化日志
    $logHandler= new CLogFileHandler("/source/plugin/logs/".date("Y-m-d").".log");
    $log = Log::Init($logHandler, 15);

    if(empty($orderInfo)){
        Log::DEBUG('dingdan bu cun zai');
    }else{
        Log::DEBUG('dingdan cun zai');
    }

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原文地址:https://www.cnblogs.com/mengyilingjian/p/11699856.html