Performance test static vs non-static methods

index.php

<?php

/*
Tries: 1500000
Note: non-static only creates an instance once

Results (average):
Non-Static: 1.0577749512E-6
Static: 1.03780804429E-6
*/
require __DIR__ . '/NonStaticTest.php';
require __DIR__ . '/StaticTest.php';

/*
	Start non-static
*/
$aTests = [];

$nonStatic = new NonStaticTest();
for ($i = 0; $i <= 1500000; $i++) {
	$start = microtime(true);
	$nonStatic->execute();
	$aTests[] = microtime(true) - $start;
}

echo "Non-Static: ";
echo (array_sum($aTests) / count($aTests));
echo "\n";

/*
	Start static
*/
$aTests = [];

for ($i = 0; $i <= 1500000; $i++) {
	$start = microtime(true);
	StaticTest::execute();
	$aTests[] = microtime(true) - $start;
}

echo "Static: ";
echo (array_sum($aTests) / count($aTests));
echo "\n";

NonStaticTest.php

<?php

class NonStaticTest
{
	public function execute()
	{
		array_fill(0, 100, 'a');
	}
}

StaticTest.php

<?php

class StaticTest
{
	public static function execute()
	{
		array_fill(0, 100, 'a');
	}
}