PHP 5 Reflection API performance

Question

I\'m currently considering the use of Reflection classes (ReflectionClass and ReflectionMethod mainly) in my own MVC web framework, because I need to automatically instancia

Answer 1

based on the code that @Alix Axel provided

So for completeness I decided to wrap each option in a class and include caching of objects where applicable. here was the results and code The results on PHP 5.6 on an i7-4710HQ

array (
  'Direct' => '5.18932366',
  'Variable' => '5.62969398',
  'Reflective' => '6.59285069',
  'User' => '7.40568614',
)

Code:

function Benchmark($callbacks, $iterations = 100, $relative = false)
{
    set_time_limit(0);

    if (count($callbacks = array_filter((array) $callbacks, 'is_callable')) > 0)
    {
        $result = array_fill_keys(array_keys($callbacks), 0);
        $arguments = array_slice(func_get_args(), 3);

        for ($i = 0; $i < $iterations; ++$i)
        {
            foreach ($result as $key => $value)
            {
                $value = microtime(true); call_user_func_array($callbacks[$key], $arguments); $result[$key] += microtime(true) - $value;
            }
        }

        asort($result, SORT_NUMERIC);

        foreach (array_reverse($result) as $key => $value)
        {
            if ($relative === true)
            {
                $value /= reset($result);
            }

            $result[$key] = number_format($value, 8, '.', '');
        }

        return $result;
    }

    return false;
}

class foo {
    public static function bar() {
        return __METHOD__;
    }
}

class TesterDirect {
    public function test() {
        return foo::bar($_SERVER['REQUEST_TIME']);
    }
}

class TesterVariable {
    private $class = 'foo';

    public function test() {
        $class = $this->class;

        return $class::bar($_SERVER['REQUEST_TIME']);
    }
}

class TesterUser {
    private $method = array('foo', 'bar');

    public function test() {
        return call_user_func($this->method, $_SERVER['REQUEST_TIME']);
    }
}

class TesterReflective {
    private $class = 'foo';
    private $reflectionMethod;

    public function __construct() {
        $this->reflectionMethod = new ReflectionMethod($this->class, 'bar');
    }

    public function test() {
        return $this->reflectionMethod->invoke(null, $_SERVER['REQUEST_TIME']);
    }
}

$testerDirect = new TesterDirect();
$testerVariable = new TesterVariable();
$testerUser = new TesterUser();
$testerReflective = new TesterReflective();

fputs(STDOUT, var_export(Benchmark(array(
    'Direct' => array($testerDirect, 'test'),
    'Variable' => array($testerVariable, 'test'),
    'User' => array($testerUser, 'test'),
    'Reflective' => array($testerReflective, 'test')
), 10000000), true));