本文实例讲述了thinkphp进程计数类process用法。分享给大家供大家参考。具体如下：
项目中有一个需求：由于某一后台任务比较占带宽，所以要限制进程数。花了点时间，写了类，目前版本功能比较简单。
process.class.php文件如下：
<?php
/**
* process
*
* @package
* @version $id$
* @copyright 2005-2011 sucop.com
* @author dijia huang <huangdijia@gmail.com>
* @license php version 3.0 {@link http://www.php.net/license/3_0.txt}
*/
class process
{
const process_key = '~process';
const process_maxnum = 10;
/**
* start
*
* @static
* @access public
* @return void
*/
static public function start(){
$list = self::__getlist();
$name = self::__getname();
if(!isset($list[$name])){
$list[$name] = array('count'=>1, 'lasttime'=>time());
}else{
if((time()-$list[$name]['time']) > 600){
$list[$name]['count'] = 1;
}else{
$list[$name]['count'] += 1;
}
}
self::__setlist($list);
}
/**
* destory
*
* @static
* @access public
* @return void
*/
static public function destory(){
$list = self::__getlist();
$name = self::__getname();
if(isset($list[$name])){
if($list[$name]['count'] <= 1){
unset($list[$name]);
}else{
$list[$name]['count'] -= 1;
$list[$name]['lasttime'] = time();
}
self::__setlist($list);
}
}
/**
* getcount
*
* @static
* @access public
* @return void
*/
static public function getcount(){
$list = self::__getlist();
$name = self::__getname();
return $list[$name]['count'];
}
/**
* getmaxnum
*
* @static
* @access public
* @return void
*/
static public function getmaxnum(){
$name = self::__getname();
return c($name) ? c($name) : self::process_maxnum;
}
/**
* getname
*
* @static
* @access public
* @return void
*/
static public function getname(){
return self::__getname();
}
/**
* isovertop
*
* @static
* @access public
* @return void
*/
static public function isovertop(){
return (self::getcount() > self::getmaxnum());
}
/**
* getlasttime
*
* @static
* @access public
* @return void
*/
static public function getlasttime(){
$list = self::__getlist();
$name = self::__getname();
return $list[$name]['lasttime'];
}
/**
* clear
*
* @static
* @access public
* @return void
*/
static public function clear(){
f(self::process_key, null);
}
/**
* __setlist
*
* @param mixed $list
* @static
* @access private
* @return void
*/
static private function __setlist($list=null){
if(!is_array($list) || empty($list))
f(self::process_key, null);
else
f(self::process_key, $list);
}
/**
* __getlist
*
* @static
* @access private
* @return void
*/
static private function __getlist(){
$list = f(self::process_key);
if(!is_array($list)) return array();
else return $list;
}
/**
* __getname
*
* @static
* @access private
* @return void
*/
static private function __getname(){
return (defined('group_name') ? group_name.'_' : '') . module_name . '_' . action_name;
}
}
?>
调用方法：
<?php
class indexaction extends action
{
// 初始化模块
public function _initialize(){
parent::_initialize();
import('@.util.process');
process::start();
}
function __destruct(){
process :: destory();
}
public function index(){
c('index_index', 3); // 动态更改限制数, 默认为10
if(process::isovertop()) echo "超出限制";
else "未超出限制";
}
}
?>
希望本文所述对大家基于thinkphp框架的php程序设计有所帮助。
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