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<?php
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/*
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* $Id: Timer.php 123 2006-09-14 20:19:08Z mrook $
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information please see
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* <http://phing.info>.
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*/
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/**
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* This class can be used to obtain the execution time of all of the scripts
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* that are executed in the process of building a page.
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*
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* Example:
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* To be done before any scripts execute:
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*
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* $Timer = new Timer;
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* $Timer->Start_Timer();
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*
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* To be done after all scripts have executed:
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*
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* $timer->Stop_Timer();
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* $timer->Get_Elapsed_Time(int number_of_places);
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*
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* @author Charles Killian
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* @author Hans Lellelid <hans@xmpl.org>
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* @package phing.system.util
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* @version $Revision: 1.5 $ $Date: 2006-09-14 22:19:08 +0200 (Thu, 14 Sep 2006) $
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*/
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class Timer {
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/** start time */
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protected $stime;
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/** end time */
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protected $etime;
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/**
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* This function sets the class variable $stime to the current time in
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* microseconds.
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* @return void
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*/
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public function start() {
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$this->stime = $this->getMicrotime();
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}
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/**
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* This function sets the class variable $etime to the current time in
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* microseconds.
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* @return void
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*/
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function stop() {
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$this->etime = $this->getMicrotime();
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}
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/**
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* This function returns the elapsed time in seconds.
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*
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* Call start_time() at the beginning of script execution and end_time() at
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* the end of script execution. Then, call elapsed_time() to obtain the
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* difference between start_time() and end_time().
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*
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* @param $places decimal place precision of elapsed time (default is 5)
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* @return string Properly formatted time.
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*/
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function getElapsedTime($places=5) {
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$etime = $this->etime - $this->stime;
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$format = "%0.".$places."f";
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return (sprintf ($format, $etime));
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}
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/**
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* This function returns the current time in microseconds.
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*
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* @author Everett Michaud, Zend.com
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* @return current time in microseconds
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* @access private
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*/
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function getMicrotime() {
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list($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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