自定义php日志类收集应用日志

<?php

class MiniLog {
	private static $_instance;
	private $_path;
	private $_pid;
	private $_handleArr;
	
	function __construct($path) {
		$this->_path = $path;
		$this->_pid = getmypid();
		
	}
	
	private function __clone() {
		
	}
	
	public static function instance($path = '/tmp/') {
		if(!(self::$_instance instanceof self)) {
			self::$_instance = new self($path);
		}
		
		return self::$_instance;
	}
	
	private	function getHandle($fileName) {
		if($this->_handleArr[$fileName]) {
			return $this->_handleArr[$fileName];
		}
		date_default_timezone_set('PRC');
		$nowTime = time();
		$logSuffix = date('Ymd', $nowTime);
		$handle = fopen($this->_path . '/' . $fileName . $logSuffix . ".log", 'a');
		$this->_handleArr[$fileName] = $handle;
		return $handle;
	}
	
	public function log($fileName, $message) {
		$handle = $this->getHandle($fileName);
		$nowTime = time();
		$logPreffix = date('Y-m-d H:i:s', $nowTime);
		fwrite($handle, "[$logPreffix][$this->_pid]$message\n");
		return true;
	}
	
	function __destruct(){
		foreach ($this->_handleArr as $key => $item) {
			if($item) {
				fclose($item);
			}
		}
	}
}

?>

该日志类特点：1. 消息记录了进程id，在消息交错时方便调试 2.打开文件后保存了文件的fd，避免重复打开文件。

调用代码：

/*
 * 默认打开所有的日志文件文件
 * ERROR,INFO,DEBUG日志级别分别对应的关闭标记文件为：NO_ERROR, NO_INFO, NO_DEBUG
 */
function isLogLevelOff($logLevel)
{
	$swithFile = ROOT_PATH . '/log/' . 'NO_' . $logLevel;
	if (file_exists($swithFile)){
		return true;
	}else {
		return false;
	}
}


/**
 * @author pacozhong
 * 日志函数的入口
 * @param string $confName 日志配置名
 * @param string $logLevel 级别
 * @param int $errorCode 错误码
 * @param string $logMessage 日志内容
 */
function ccdb_log($confName ,$logLevel, $errorCode, $logMessage = "no error msg")
{
	if (isLogLevelOff($logLevel)){
		return;
	}
	
	$st = debug_backtrace();

	$function = ''; //调用interface_log的函数名
	$file = '';     //调用interface_log的文件名
	$line = '';     //调用interface_log的行号
	foreach($st as $item) {
		if($file) {
			$function = $item['function'];
			break;
		}
		if($item['function'] == 'interface_log') {
			$file = $item['file'];
			$line = $item['line'];
		}
	}
	
	$function = $function ? $function : 'main';
	
	//为了缩短日志的输出，file只取最后一截文件名
	$file = explode("/", rtrim($file, '/'));
	$file = $file[count($file)-1];
	$prefix = "[$file][$function][$line][$logLevel][$errorCode] ";
	if($logLevel == INFO || $logLevel == STAT) {
		$prefix = "[$logLevel]" ;
	}
	$logMessage = genErrMsg($errorCode , $logMessage);
	$logFileName = $confName . "_" . strtolower($logLevel);
	MiniLog::instance(ROOT_PATH . "/log/")->log($logFileName, $prefix . $logMessage);
	if (isLogLevelOff("DEBUG") || $logLevel == "DEBUG"){
		return ;
	}else {
		MiniLog::instance(ROOT_PATH . "/log/")->log($confName . "_" . "debug", $prefix . $logMessage);
	}
}

/**
 * @author pacozhong
 * 接口层日志函数
 */
function interface_log($logLevel, $errorCode, $logMessage = "no error msg")
{
	ccdb_log('interface', $logLevel, $errorCode, $logMessage);
}

在文件夹放NO_XX控制日志的开启和关闭。

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