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<?php
/*
* $Id: Timer.php 526 2009-08-11 12:11:17Z mrook $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information please see
* <http://phing.info>.
*/
/**
* This class can be used to obtain the execution time of all of the scripts
* that are executed in the process of building a page.
*
* Example:
* To be done before any scripts execute:
*
* $Timer = new Timer;
* $Timer->Start_Timer();
*
* To be done after all scripts have executed:
*
* $timer->Stop_Timer();
* $timer->Get_Elapsed_Time(int number_of_places);
*
* @author Charles Killian
* @author Hans Lellelid <hans@xmpl.org>
* @package phing.system.util
* @version $Revision: 526 $ $Date: 2009-08-11 14:11:17 +0200 (Tue, 11 Aug 2009) $
*/
class Timer {
/** start time */
protected $stime;
/** end time */
protected $etime;
/**
* This function sets the class variable $stime to the current time in
* microseconds.
* @return void
*/
public function start() {
$this->stime = $this->getMicrotime();
}
/**
* This function sets the class variable $etime to the current time in
* microseconds.
* @return void
*/
function stop() {
$this->etime = $this->getMicrotime();
}
/**
* This function returns the elapsed time in seconds.
*
* Call start_time() at the beginning of script execution and end_time() at
* the end of script execution. Then, call elapsed_time() to obtain the
* difference between start_time() and end_time().
*
* @param $places decimal place precision of elapsed time (default is 5)
* @return string Properly formatted time.
*/
function getElapsedTime($places=5) {
$etime = $this->etime - $this->stime;
$format = "%0.".$places."f";
return (sprintf ($format, $etime));
}
/**
* This function returns the current time in microseconds.
*
* @author Everett Michaud, Zend.com
* @return current time in microseconds
* @access private
*/
function getMicrotime() {
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec);
}
}
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