Benchmark curl_setopt_array vs curl_setopt

benchmark.php

<?php

function benchmark(callable $block) {
  $start = microtime(true);

  for ($i = 0; $i < 100000; ++$i) {
    $block();
  }

  $end = microtime(true);

  return $end - $start;
}


echo 'curl_setopt_array: ', benchmark(function() {
  $options = array(
    CURLOPT_RETURNTRANSFER => TRUE,
    CURLOPT_HTTPHEADER => array('Expect:'),
    CURLOPT_HEADER => FALSE
  );
  $ci = curl_init();
  curl_setopt_array($ci, $options);
}), PHP_EOL;

echo '      curl_setopt: ', benchmark(function() {
  $ci = curl_init();
  curl_setopt($ci, CURLOPT_RETURNTRANSFER, TRUE);
  curl_setopt($ci, CURLOPT_HTTPHEADER, array('Expect:'));
  curl_setopt($ci, CURLOPT_HEADER, FALSE);
}), PHP_EOL;

result.txt

curl_setopt_array: 1.2236759662628
      curl_setopt: 1.384241104126

My result on a Skylake CPU:
curl_setopt_array: 0.41492700576782
curl_setopt: 0.42061114311218
So I suppose even the speed is slightly noticeable in my machine.

in 2023 with PHP v8.2, it seems that the result has turned around.
although it is true that the times were reduced for the 2:

curl_setopt_array: 0.20178509712219
curl_setopt: 0.17806507110596