File util/Bench.class.php

 1:  2:  3:  4:  5:  6:  7:  8:  9: 10: 11: 12: 13: 14: 15: 16: 17: 18: 19: 20: 21: 22: 23: 24: 25: 26: 27: 28: 29: 30: 31: 32: 33: 34: 35: 36: 37: 38: 39: 40: 41: 42: 43: 44: 45: 46: 47: 48: 49: 50: 51: 52: 53: 54: 55: 56: 57: 58: 59: 60: 61: 62: 63: 64: 65: 66: 67: 68: 69: 70: 71: 72: 73: 74: 75: 76: 77: 78: 79: 80: 81: 82: 83: 84: 85: 86: 87: 88: 89: 90: 91: 92: 93: 

<?php
/**
 * This class is done to time a process easily. You choose when to start and when to stop.
 * @package     Util
 * @copyright   &copy; 2005-2019 PHPBoost
 * @license     https://www.gnu.org/licenses/gpl-3.0.html GNU/GPL-3.0
 * @author      Regis VIARRE <crowkait@phpboost.com>
 * @version     PHPBoost 5.2 - last update: 2016 10 24
 * @since       PHPBoost 1.4 - 2006 03 14
 * @contributor Loic ROUCHON <horn@phpboost.com>
 * @contributor Arnaud GENET <elenwii@phpboost.com>
*/

class Bench
{
    /**
     * @var bool
     */
    private $started = false;

    /**
     * @access protected
     * @var int start microtime
     */
    private $start = 0;
    /**
     * @access protected
     * @var int duration microtime
     */
    private $duration = 0;

    /**
     * returns the number formatted with $digits floating numbers
     * @param int $digits the desired display precision
     * @return string the formatted duration
     */
    public function to_string($digits = 3)
    {
        if ($this->started)
        {
            $this->duration += $this->get_delta_duration();
            $this->start();
        }
        return number_format($this->duration, $digits);
    }

    /**
     * stops the bench
     */
    public function stop()
    {
        $this->duration += $this->get_delta_duration();
        $this->started = false;
    }

    /**
     * starts the bench
     */
    public function start()
    {
        $this->start = Bench::get_microtime();
        $this->started = true;
    }

    /**
     * Returns the amount of memory, that's currently being allocated to PHP script.
     */
    public function get_memory_php_used()
    {
        $size = memory_get_usage(true);
        $unit = array('B','KB','MB','GB','TB','PB');
        return @round($size/pow(1024,($i = floor(log($size,1024)))), 2) . ' ' . $unit[$i];
    }

    private function get_delta_duration()
    {
        return Bench::get_microtime() - $this->start;
    }

    /**
     * @static
     * computes the time with a microsecond precision
     * @access protected
     * @return float
     */
    private function get_microtime()
    {
        list($usec, $sec) = explode(" ", microtime());
        return ((float)$usec + (float)$sec);
    }
}
?>