benchmark.php

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<?php
final class Benchmark
{
    private static $_benchmark;
    private static $_avgload = 0;
    public static function start_clock ($name)
    {
        if (! isset(self::$_benchmark[$name])) {
            self::$_benchmark[$name] = array('start_time' => microtime() , 'final_time' => 0 , 'memory_start' => memory_get_usage() , 'memory_stop' => 0 , 'time_execution' => 0);
        }
    }
    private static function _stop_clock ($name)
    {
        if (isset(self::$_benchmark[$name])) {
            if (PHP_OS == 'Linux') {
                $load = sys_getloadavg();
            } else {
                $load = 0;
            }
            self::$_avgload = $load[0];
            self::$_benchmark[$name]['memory_stop'] = memory_get_usage();
            self::$_benchmark[$name]['final_time'] = microtime();
            list ($sm, $ss) = explode(' ', self::$_benchmark[$name]['start_time']);
            list ($em, $es) = explode(' ', self::$_benchmark[$name]['final_time']);
            self::$_benchmark[$name]['time_execution'] = number_format(($em + $es) - ($sm + $ss), 4);
            return self::$_benchmark[$name]['time_execution'];
        }
    }
    public static function memory_usage ($name)
    {
        if (self::$_benchmark[$name]) {
            self::$_benchmark[$name]['memory_usage'] = number_format((self::$_benchmark[$name]['memory_stop'] - self::$_benchmark[$name]['memory_start']) / 1048576, 2);
            return self::$_benchmark[$name]['memory_usage'];
        } else {
            throw new KumbiaException("No existe el Benchmark para el nombre: '$name', especificado \n");
        }
    }
    public static function time_execution ($name)
    {
        if (isset(self::$_benchmark[$name])) {
            return self::_stop_clock($name);
        } else {
            throw new KumbiaException("No existe el Benchmark para el nombre: $name, especificado \n");
        }
    }
    public static function test ($func, $loops)
    {
        self::start_clock($func);
        ob_start();
        for ($i = 1; $i <= $loops; $i ++) {
            eval($func);
        }
        ob_end_flush();
        $time = self::time_execution($func);
        echo '** Funcion: ', $func;
        echo $loops, ' veces';
        echo ' Tiempo: ', $time;
    }
}