Quick and dirty PHP benchmarking

benchmark.php

<?php

/**
 * Very simple PHP benchmarking.
 * 
 * @noinspection PhpUnused
 */

// name your contestants
const NAME1 = 'explode()';
const NAME2 = 'preg_split()';

// set some shared data to work with
const TEXT = <<<EOL
God, ooh. Sunny, gutless lasses quirky fear a misty, mighty lagoon.
Riddle ho! ransack to be haulled.
Golly gosh, never haul a pegleg.
The real anchor fiery burns the biscuit eater.
God, ooh. Sunny, gutless lasses quirky fear a misty, mighty lagoon.
Riddle ho! ransack to be haulled.
Golly gosh, never haul a pegleg.
The real anchor fiery burns the biscuit eater.
God, ooh. Sunny, gutless lasses quirky fear a misty, mighty lagoon.
Riddle ho! ransack to be haulled.
Golly gosh, never haul a pegleg.
The real anchor fiery burns the biscuit eater.
God, ooh. Sunny, gutless lasses quirky fear a misty, mighty lagoon.
Riddle ho! ransack to be haulled.
Golly gosh, never haul a pegleg.
The real anchor fiery burns the biscuit eater.
EOL;

// how many iterations to test
const ITERATIONS = 1000000;

/**
 * First contestant
 */
function test1()
{
    explode("\n", TEXT);
}

/**
 * Second contestant
 */
function test2()
{
    preg_split("/\n/", TEXT);
}

//
// END OF CONFIG #######################################################################################################
//

// these three constants are emojis and may be invisible in your editor:
const FIRST_PLACE  = '🥇';
const SECOND_PLACE = '🥈';
const THIRD_PLACE  = '🥉';

echo sprintf(
    "benchmarking %s iterations on PHP %s..." . PHP_EOL . PHP_EOL,
    number_format(ITERATIONS, 0, ',', '.'),
    PHP_VERSION
);

// benchmark the first contestant
$start = microtime(true);
for ($i = 0; $i <= ITERATIONS; $i++) {
    test1();
}
$dur1 = microtime(true) - $start;

// benchmark the second contestant
$start = microtime(true);
for ($i = 0; $i <= ITERATIONS; $i++) {
    test2();
}
$dur2 = microtime(true) - $start;

// calculate percentage for the winner
$factor = max($dur1, $dur2) / 100;
$percent = min($dur1, $dur2) / $factor;
$percent = sprintf('%6.2f%% '.FIRST_PLACE, $percent);

// silly edge-case for something like a draw
$draw = false;
if (abs($dur1 - $dur2) < 0.0001) {
    $draw = true;
}

// show results
if ($draw) {
    echo "Less than 0.0001s difference - seems like a draw!".PHP_EOL;
    echo sprintf('%30.s: %.10f s | ' . FIRST_PLACE . PHP_EOL, NAME1, $dur1);
    echo sprintf('%30.s: %.10f s | ' . FIRST_PLACE . PHP_EOL, NAME2, $dur2);
} else {
    $won     = ($dur1 < $dur2) ? 1 : 2;
    $winner1 = $won === 1 ? $percent : '100.00% '.SECOND_PLACE;
    $winner2 = $won === 2 ? $percent : '100.00% '.SECOND_PLACE;

    echo sprintf('%30.s: %.10f s | %s' . PHP_EOL, NAME1, $dur1, $winner1);
    echo sprintf('%30.s: %.10f s | %s' . PHP_EOL, NAME2, $dur2, $winner2);
}