timer.php

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<?php

/**
 * Timer
 *
 * The basic timer function
 */
class Timer
{
    /**
     * All markers with the times
     *
     * @access protected
     * @var Array
     * @static
     */
    protected static $markers = Array();

    /**
     * A shortcut for start marker
     *
     * @return void
     * @see Timer::setMarker()
     * @static
     */
    public static function start()
    {
        self::setMarker('start');
    }

    /**
     * A shortcut for end marker
     *
     * @return void
     * @see Timer::setMarker()
     * @static
     */
    public static function end()
    {
        self::setMarker('end');
    }

    /**
     * Sets a time marker in the script
     *
     * @param string $name The name of the marker
     * @return void
     * @static
     */
    public static function setMarker( $name )
    {
        self::$markers[$name] = microtime(true);
    }

    /**
     * A shortcut for getDiff( 'start', 'end' )
     *
     * @return int The difference between start and end
     * @see Timer::getDiff()
     * @static
     */
    public static function getResult()
    {
        return self::getDiff('end', 'start');
    }

    /**
     * Get the difference between 2 markers
     *
     * @param string $marker1 The name of the first marker
     * @param string $marker2 The name of the second marker
     * @return int The difference between the times
     * @static
     */
    public static function getDiff( $marker1, $marker2 )
    {
        if( !isset(self::$markers[$marker1]) )
            throw new InvalidArgumentException('The Marker('.$marker1.' has not been set');
        if( !isset(self::$markers[$marker2]) )
            throw new InvalidArgumentException('The Marker('.$marker2.' has not been set');


        $diff = (self::$markers[$marker1] - self::$markers[$marker2]);

        if( $diff < 0 )
            $diff *= -1;

        return $diff;
    }
}

 
 

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