Benchmarking https://github.com/laravel/framework/pull/16500

Article.php

<?php

namespace App;

class Article extends \Illuminate\Database\Eloquent\Model
{
    protected function getAttributeFromArray($key)
    {
        global $BENCHMARK_1;

        if (! empty($BENCHMARK_1)) {
            if (isset($this->attributes[$key])) {
                return $this->attributes[$key];
            }

        } else {
            if (array_key_exists($key, $this->attributes)) {
                return $this->attributes[$key];
            }
        }
    }

    public function hasCast($key, $types = null)
    {
        global $BENCHMARK_2;

        if (! empty($BENCHMARK_2)) {
            if (isset($this->getCasts()[$key])) {
                return $types ? in_array($this->getCastType($key), (array) $types, true) : true;
            }

        } else {
            if (array_key_exists($key, $this->getCasts())) {
                return $types ? in_array($this->getCastType($key), (array) $types, true) : true;
            }
        }

        return false;
    }

}

benchmark.php

<?php

global $BENCHMARK_1, $BENCHMARK_2;

$nb = 1000;

$article = \App\Article::first();

$t1 = microtime(true);

$BENCHMARK_1 = false;
$BENCHMARK_2 = false;

for ($i = $nb; $i--; ) {

    $article->id;

}
$t2 = microtime(true);

$BENCHMARK_1 = true;
$BENCHMARK_2 = true;

for ($i = $nb; $i--; ) {

    $article->id;

}
$t3 = microtime(true);

echo $t2 - $t1;
echo PHP_SAPI == 'cli' ? "\n" : '<br>';
echo $t3 - $t2;

echo PHP_SAPI == 'cli' ? "\n\n" : '<br><br>';
echo $t2 - $t1 == 0 ? 'N/A' : ($t3 - $t2) * 100 / ($t2 - $t1);

exit;