Speed Test: array_push vs $array[]

speed_test.php

<?php

$time_start = microtime(true);

$myArray = array();

for ($i = 0; $i < 100000; ++$i) {
  $myArray[] = $i;
  $myArray[] = 'test a string';
}

$time_end = microtime(true);
printf("Took %f seconds for array[]\n", $time_end - $time_start);

$time_start = microtime(true);

$myArray = array();

for ($i = 0; $i < 100000; ++$i) {
  array_push($myArray, $i);
  array_push($myArray, 'test a string');
}

$time_end = microtime(true);
printf("Took %f seconds for array_push\n", $time_end - $time_start);
?>