Chris@0: <?php
Chris@0: /*
Chris@0:  * This file is part of the PHP_Timer package.
Chris@0:  *
Chris@0:  * (c) Sebastian Bergmann <sebastian@phpunit.de>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: /**
Chris@0:  * Utility class for timing.
Chris@0:  */
Chris@0: class PHP_Timer
Chris@0: {
Chris@0:     /**
Chris@0:      * @var array
Chris@0:      */
Chris@0:     private static $times = array(
Chris@0:       'hour'   => 3600000,
Chris@0:       'minute' => 60000,
Chris@0:       'second' => 1000
Chris@0:     );
Chris@0: 
Chris@0:     /**
Chris@0:      * @var array
Chris@0:      */
Chris@0:     private static $startTimes = array();
Chris@0: 
Chris@0:     /**
Chris@0:      * @var float
Chris@0:      */
Chris@0:     public static $requestTime;
Chris@0: 
Chris@0:     /**
Chris@0:      * Starts the timer.
Chris@0:      */
Chris@0:     public static function start()
Chris@0:     {
Chris@0:         array_push(self::$startTimes, microtime(true));
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Stops the timer and returns the elapsed time.
Chris@0:      *
Chris@0:      * @return float
Chris@0:      */
Chris@0:     public static function stop()
Chris@0:     {
Chris@0:         return microtime(true) - array_pop(self::$startTimes);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Formats the elapsed time as a string.
Chris@0:      *
Chris@0:      * @param  float  $time
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public static function secondsToTimeString($time)
Chris@0:     {
Chris@0:         $ms = round($time * 1000);
Chris@0: 
Chris@0:         foreach (self::$times as $unit => $value) {
Chris@0:             if ($ms >= $value) {
Chris@0:                 $time = floor($ms / $value * 100.0) / 100.0;
Chris@0: 
Chris@0:                 return $time . ' ' . ($time == 1 ? $unit : $unit . 's');
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         return $ms . ' ms';
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Formats the elapsed time since the start of the request as a string.
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public static function timeSinceStartOfRequest()
Chris@0:     {
Chris@0:         return self::secondsToTimeString(microtime(true) - self::$requestTime);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns the resources (time, memory) of the request as a string.
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public static function resourceUsage()
Chris@0:     {
Chris@0:         return sprintf(
Chris@0:             'Time: %s, Memory: %4.2fMB',
Chris@0:             self::timeSinceStartOfRequest(),
Chris@0:             memory_get_peak_usage(true) / 1048576
Chris@0:         );
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: if (isset($_SERVER['REQUEST_TIME_FLOAT'])) {
Chris@0:     PHP_Timer::$requestTime = $_SERVER['REQUEST_TIME_FLOAT'];
Chris@0: } elseif (isset($_SERVER['REQUEST_TIME'])) {
Chris@0:     PHP_Timer::$requestTime = $_SERVER['REQUEST_TIME'];
Chris@0: } else {
Chris@0:     PHP_Timer::$requestTime = microtime(true);
Chris@0: }