162 lines
3.0 KiB
PHP
162 lines
3.0 KiB
PHP
<?php
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/**
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* Zeed Platform Project
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* Based on Zeed Framework & Zend Framework.
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*
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* BTS - Billing Transaction Service
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* CAS - Central Authentication Service
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*
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* LICENSE
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* http://www.zeed.com.cn/license/
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*
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* @category Zeed
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* @package Zeed_ChangeMe
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* @subpackage ChangeMe
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* @copyright Copyright (c) 2010 Zeed Technologies PRC Inc. (http://www.zeed.com.cn)
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* @author Zeed Team (http://blog.zeed.com.cn)
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* @since 2010-9-2
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* @version SVN: $Id$
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*/
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/**
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* 计数器
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*
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* <code>
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* // 在构造对象时，启动计数器
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* $timer = new Zeed_Util_Timer(true);
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*
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* // 在构造对象时，不启动计数器，使用 start() 函数启动
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* $timer = new Zeed_Util_Timer(false);
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*
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* $timenow = $timer->start();
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* sleep(5);
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* $timenow = $timer->stop();
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*
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* // 获取计数器耗时
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* $timeElapsed = $timer->getElapsedTime();
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*
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* // 重设计数器
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* $timer->reset();
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* </code>
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*
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* @author Nroe
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*/
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class Zeed_Util_Timer
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{
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/**
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* 计数器开启时间
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*
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* @var integer
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*/
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protected $_timeStart = 0;
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/**
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* 计数器结束时间
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*
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* @var integer
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*/
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protected $_timeEnd = 0;
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/**
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* 计数器耗时
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*
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* @var integer
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*/
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protected $_elapsed = 0;
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/**
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* 获取当前时间
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*
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* @return integer
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*/
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protected function _getTime()
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{
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list($usec, $sec) = explode(' ', microtime());
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return ((float) $usec + (float) $sec);
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}
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/**
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* 计算当前耗时
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*
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* @return integer
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*/
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protected function _compute()
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{
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if ($this->_timeEnd && $this->_timeStart) {
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return $this->_timeEnd - $this->_timeStart;
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}
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return 0;
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}
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/**
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* 构造计数器
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*
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* @param boolean 是否启动计数器
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* @return void
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*/
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public function __construct($start = false)
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{
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if ($start) {
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$this->start();
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}
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}
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/**
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* 启动计数器
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*
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* @return float $timenow 当前时间
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*/
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public function start()
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{
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$this->_timeStart = $this->_getTime();
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return $this->_timeStart;
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}
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/**
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* 停止计数器
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*
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* @return float $timenow 当前时间
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*/
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public function stop()
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{
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$this->_timeEnd = $this->_getTime();
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$this->_elapsed = $this->_compute();
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return $this->_timeEnd;
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}
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/**
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* 获取当前计数器耗时
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*
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* @return integer
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*/
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public function getElapsedTime()
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{
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if (! $this->_elapsed) {
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if ($this->_timeStart) {
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$this->stop();
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}
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return 0;
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}
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return $this->_elapsed;
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}
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/**
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* 重设计数器
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*
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* @return void
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*/
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public function reset()
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{
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$this->_timeStart = 0;
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$this->_timeEnd = 0;
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$this->_elapsed = 0;
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}
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}
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// End ^ Native EOL ^ encoding
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