Question

php中实现ASP的Application

在线人数,今日登录人数及网站登录人数统计的代码,不用数据库和文件写入的方式,用ASP的APPLICATION的方式.

Answer 1

不用数据库和文件写入的方式好像还没有!

class Application
{
/**保存共享变量的文件*/
var $save_file = 'Application/Application';
/**共享变量的名称*/
var $application = null;
/**序列化之后的数据*/
var $app_data = '';
/**是否已经做过setValue的操作 防止频繁写文件操作*/
var $__writed = false;

/**
* 构造函数
*/
function Application()
{
$this->application = array();
}
/**
* 设置全局变量
* @param string $var_name 要加入到全局变量的变量名
* @param string $var_value 变量的值
*/
function setValue($var_name,$var_value)
{
if (!is_string($var_name) || empty($var_name))
return false;
if ($this->__writed)
{
$this->application[$var_name] = $var_value;
return;
}
$this->application = $this->getValue();
if (!is_array($this->application))
settype($this->application,"array");
$this->application[$var_name] = $var_value;
$this->__writed = true;
$this->app_data = @serialize($this->application);
$this->__writeToFile();
}
/**
* 取得保存在全局变量里的值
* @return array
*/
function getValue()
{
if (!is_file($this->save_file))
$this->__writeToFile();
return @unserialize(@file_get_contents($this->save_file));
}
/**
* 写序列化后的数据到文件
* @scope private
*/
function __writeToFile()
{
$fp = @fopen($this->save_file,"w");
@fwrite($fp,$this->app_data);
@fclose($fp);
}
}

示例:
/*+----------------example----------------------
require_once("Application.php");

$arr = array(0=>"Hi",1=>"Yes");
$a = new Application();
$a->setValue("t1","arui");
$a->setValue("arr",$arr);
$u = $a->getValue();
---------------------------------------------+*/