Benchmark for returning large arrays via return_value_ptr

bench.php

<?php

$numElements = 10000000;

// Test end() performance

$array = [array_fill(0, $numElements, null)];

$startTime = microtime(true);
$return = end($array);
echo "end(): ", microtime(true) - $startTime, "\n";

unset($array, $return);

// Test __call() performance

class Foo {
    public function __call($name, $args) {
        return $args[0];
    }
}

$array = array_fill(0, $numElements, null);
$obj = new Foo;

$startTime = microtime(true);
$return = $obj->bar($array);
echo "__call(): ", microtime(true) - $startTime, "\n";

// RESULTS (before and after)

end(): 0.60040688514709
__call(): 0.59498691558838

end(): 0.00011515617370605
__call(): 0.00011706352233887