Current File : //opt/alt/php55/usr/share/pear/PHP/Timer.php
<?php
/**
* PHP_Timer
*
* Copyright (c) 2010-2013, Sebastian Bergmann <sebastian@phpunit.de>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Sebastian Bergmann nor the names of his
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*
* @package PHP
* @subpackage Timer
* @author Sebastian Bergmann <sebastian@phpunit.de>
* @copyright 2010-2013 Sebastian Bergmann <sebastian@phpunit.de>
* @license http://www.opensource.org/licenses/BSD-3-Clause The BSD 3-Clause License
* @link http://github.com/sebastianbergmann/php-timer
* @since File available since Release 1.0.0
*/
/**
* Utility class for timing.
*
* @package PHP
* @subpackage Timer
* @author Sebastian Bergmann <sebastian@phpunit.de>
* @copyright 2010-2013 Sebastian Bergmann <sebastian@phpunit.de>
* @license http://www.opensource.org/licenses/BSD-3-Clause The BSD 3-Clause License
* @version Release: 1.0.5
* @link http://github.com/sebastianbergmann/php-timer
* @since Class available since Release 1.0.0
*/
class PHP_Timer
{
/**
* @var array
*/
private static $times = array(
'hour' => 3600000,
'minute' => 60000,
'second' => 1000
);
/**
* @var array
*/
private static $startTimes = array();
/**
* @var float
*/
public static $requestTime;
/**
* Starts the timer.
*/
public static function start()
{
array_push(self::$startTimes, microtime(TRUE));
}
/**
* Stops the timer and returns the elapsed time.
*
* @return float
*/
public static function stop()
{
return microtime(TRUE) - array_pop(self::$startTimes);
}
/**
* Formats the elapsed time as a string.
*
* @param float $time
* @return string
*/
public static function secondsToTimeString($time)
{
$ms = round($time * 1000);
foreach (self::$times as $unit => $value) {
if ($ms >= $value) {
$time = floor($ms / $value * 100.0) / 100.0;
return $time . ' ' . ($time == 1 ? $unit : $unit . 's');
}
}
return $ms . ' ms';
}
/**
* Formats the elapsed time since the start of the request as a string.
*
* @return string
*/
public static function timeSinceStartOfRequest()
{
return self::secondsToTimeString(microtime(TRUE) - self::$requestTime);
}
/**
* Returns the resources (time, memory) of the request as a string.
*
* @return string
*/
public static function resourceUsage()
{
return sprintf(
'Time: %s, Memory: %4.2fMb',
self::timeSinceStartOfRequest(),
memory_get_peak_usage(TRUE) / 1048576
);
}
}
if (isset($_SERVER['REQUEST_TIME_FLOAT'])) {
PHP_Timer::$requestTime = $_SERVER['REQUEST_TIME_FLOAT'];
}
else {
PHP_Timer::$requestTime = microtime(TRUE);
}
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