Reflection benchmark

reflection-benchmark.php

<?php

define('NUM_TESTS', 10);

class Model
{
    private $property;

    public function getProperty()
    {
        return $this->property;
    }

    public function setProperty($property)
    {
        $this->property = $property;
    }
}

function test_accessors()
{
    echo "Using accessors\n";

    $start = microtime(true);
    $model = new Model;
    $end = microtime(true);

    echo "Initializing: " . number_format(1000000 * ($end - $start), 3) . " µsec\n\n";

    for($i=0; $i<NUM_TESTS; $i++) {
        $start = microtime(true);
        $model->setProperty(mt_rand(0, 21312312321));
        $end = microtime(true);
        echo "Accessors #$i: " . number_format(1000000 * ($end - $start), 3) . " µsec\n";
    }

    echo "\n";
}

function test_reflection()
{
    echo "Using reflection\n";

    $start = microtime(true);
    $model = new Model;
    $modelReflection = new ReflectionObject($model);
    $end = microtime(true);

    echo "Initializing: " . number_format(1000000 * ($end - $start), 3) . " µsec\n\n";

    for($i=0; $i<NUM_TESTS; $i++) {
        $start = microtime(true);
        $property = $modelReflection->getProperty('property');
        $property->setAccessible(true);
        $property->setValue($model, 'test');
        $end = microtime(true);
        echo "Reflection #$i: " . number_format(1000000 * ($end - $start), 3) . " µsec\n";
    }

    echo "\n";
}

test_accessors();

gc_collect_cycles();

test_reflection();

Sample output:

Using accessors
Initializing: 12.159 µsec

Accessors #0: 20.981 µsec
Accessors #1: 2.146 µsec
Accessors #2: 0.954 µsec
Accessors #3: 0.000 µsec
Accessors #4: 1.192 µsec
Accessors #5: 0.954 µsec
Accessors #6: 0.000 µsec
Accessors #7: 0.000 µsec
Accessors #8: 0.000 µsec
Accessors #9: 1.192 µsec

Using reflection
Initializing: 10.014 µsec

Reflection #0: 11.206 µsec
Reflection #1: 5.007 µsec
Reflection #2: 1.907 µsec
Reflection #3: 1.907 µsec
Reflection #4: 0.954 µsec
Reflection #5: 1.192 µsec
Reflection #6: 1.192 µsec
Reflection #7: 1.192 µsec
Reflection #8: 2.146 µsec
Reflection #9: 0.954 µsec