1. sfTimer.class.php
  2. /**
 * sfTimer class allows to time some PHP code.
 *
 * @package    symfony
 * @subpackage util
 * @author     Fabien Potencier 
 * @version    SVN: $Id: sfTimer.class.php 9079 2008-05-20 00:38:07Z Carl.Vondrick $
 */
  3. class sfTimer
  4. {
  5.   protected
  6.     $startTime = null,
  7.     $totalTime = null,
  8.     $name = '',
  9.     $calls = 0;
  11.   /**
  12.    * Creates a new sfTimer instance.
  13.    *
  14.    * @param string $name The name of the timer
  15.    */
  16.   public function __construct($name = '')
  17.   {
  18.     $this->name = $name;
  19.     $this->startTimer();
  20.   }
  22.   /**
  23.    * Starts the timer.
  24.    */
  25.   public function startTimer()
  26.   {
  27.     $this->startTime = microtime(true);
  28.   }
  30.   /**
  31.    * Stops the timer and add the amount of time since the start to the total time.
  32.    *
  33.    * @return float Time spend for the last call
  34.    */
  35.   public function addTime()
  36.   {
  37.     $spend = microtime(true) - $this->startTime;
  38.     $this->totalTime += $spend;
  39.     ++$this->calls;
  41.     return $spend;
  42.   }
  44.   /**
  45.    * Gets the number of calls this timer has been called to time code.
  46.    *
  47.    * @return integer Number of calls
  48.    */
  49.   public function getCalls()
  50.   {
  51.     return $this->calls;
  52.   }
  54.   /**
  55.    * Gets the total time elapsed for all calls of this timer.
  56.    *
  57.    * @return float Time in seconds
  58.    */
  59.   public function getElapsedTime()
  60.   {
  61.     if (null === $this->totalTime)
  62.     {
  63.       $this->addTime();
  64.     }
  66.     return $this->totalTime;
  67.   }
  68. }
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