ObjectVsArrayBench.php

/**
 * Preliminary benchmark trying to figure out whether arrays or objects are faster in PHP in use cases of the algorithm.
 *
 * @author Tomasz Darmetko <tomasz.darmetko@gmail.com>
 */
class ObjectVsArrayBench extends AbstractBenchmarkCase
{

    use RelevantRelationshipTrait;

    public function benchCreateObjectDirectly()
    {
        $relationship = new Relationship;
        $relationship->type = 'element';
    }

    public function benchCreateObjectFromArray()
    {
        $relationship = Relationship::createFromArray(['type' => 'element']);
    }

    public function benchCreateArray()
    {
        $relationship = ['type' => 'element'];
    }

    public function benchGetRelationshipObject()
    {
        $relationship = new Relationship;
        $relationship->type1 = 'element';
        $relationship->type2 = 'element';

        $relationship->getRelevantRelationship(['type1']);
    }

    public function benchGetRelationshipArray()
    {
        $relationship = ['type1' => 'element', 'type2' => 'element'];

        $this->getRelevantRelationship($relationship, ['type1']);
    }

    public function benchGetLongRelationshipObject()
    {
        $relationship = new Relationship;
        $relationship->type1 = 'element';
        $relationship->type2 = 'element';
        $relationship->type3 = 'element';
        $relationship->type4 = 'element';
        $relationship->type5 = 'element';
        $relationship->type6 = 'element';

        $relationship->getRelevantRelationship(['type3', 'type4', 'type5']);
        $relationship->getRelevantRelationship(['type3', 'type4', 'type5']);
        $relationship->getRelevantRelationship(['type3', 'type4', 'type5']);
        $relationship->getRelevantRelationship(['type3', 'type4', 'type5']);
        $relationship->getRelevantRelationship(['type3', 'type4', 'type5']);
        $relationship->getRelevantRelationship(['type3', 'type4', 'type5']);
    }

    public function benchGetLongRelationshipArray()
    {
        $relationship = [
            'type1' => 'element',
            'type2' => 'element',
            'type3' => 'element',
            'type4' => 'element',
            'type5' => 'element',
            'type6' => 'element'
        ];

        $this->getRelevantRelationship($relationship, ['type3', 'type4', 'type5']);
        $this->getRelevantRelationship($relationship, ['type3', 'type4', 'type5']);
        $this->getRelevantRelationship($relationship, ['type3', 'type4', 'type5']);
        $this->getRelevantRelationship($relationship, ['type3', 'type4', 'type5']);
        $this->getRelevantRelationship($relationship, ['type3', 'type4', 'type5']);
        $this->getRelevantRelationship($relationship, ['type3', 'type4', 'type5']);
    }

}

class Relationship
{

    public function getRelevantRelationship(array $types)
    {
        $relevantRelationship = new Relationship;
        foreach ($types as $type) {
            $relevantRelationship->{$type} = $this->{$type};
        }

        return $relevantRelationship;
    }

    public static function createFromArray(array $arrayRelationship = [])
    {
        $relationship = new Relationship;
        foreach ($arrayRelationship as $type => $element) {
            $relationship->{$type} = $element;
        }

        return $relationship;
    }

}

results

PhpBench 0.13.0. Running benchmarks.
Using configuration file: ...

\Benchmarks\ObjectVsArrayBench

    benchCreateObjectDirectly     R2 I6 P0 	[μ Mo]/r: 1.788 1.795 (μs) 	[μSD μRSD]/r: 0.022μs 1.24%
    benchCreateObjectFromArray    R3 I8 P0 	[μ Mo]/r: 2.916 2.888 (μs) 	[μSD μRSD]/r: 0.061μs 2.08%
    benchCreateArray              R2 I9 P0 	[μ Mo]/r: 0.960 0.968 (μs) 	[μSD μRSD]/r: 0.012μs 1.29%
    benchGetRelationshipObject    R2 I6 P0 	[μ Mo]/r: 3.733 3.668 (μs) 	[μSD μRSD]/r: 0.095μs 2.54%
    benchGetRelationshipArray     R1 I6 P0 	[μ Mo]/r: 2.300 2.286 (μs) 	[μSD μRSD]/r: 0.045μs 1.96%
    benchGetLongRelationshipObjectR1 I0 P0 	[μ Mo]/r: 14.539 14.394 (μs) 	[μSD μRSD]/r: 0.276μs 1.90%
    benchGetLongRelationshipArray R1 I1 P0 	[μ Mo]/r: 9.625 9.511 (μs) 	[μSD μRSD]/r: 0.203μs 2.11%

7 subjects, 70 iterations, 70,000 revs, 0 rejects
(best [mean mode] worst) = 0.941 [5.123 5.073] 0.979 (μs)
⅀T: 358.613μs μSD/r 0.102μs μRSD/r: 1.873%