Super simple PHP benchmark script

testomat5000.php

<?php

// Adjust database credentials in lines 37-40
// And just run on CLI
// On very fast devices the amount of time for each test, should be less than 1 second

$start = microtime(true);

for ($i = 0; $i < 100000000; $i++) {
    sqrt($i);
}

$end = microtime(true);
$elapsed = $end - $start;

echo "Calc sqrt: $elapsed seconds\n";


// ---

$start = microtime(true);

for ($i = 0; $i < 500000; $i++) {
    $a = file_get_contents(__FILE__);
    strlen($a);
}

$end = microtime(true);
$elapsed = $end - $start;

echo "Read File: $elapsed seconds\n";


// ---

$start = microtime(true);
$servername = 'db';
$username = 'root';
$password = 'root';
$database = 'db';

for ($i = 0; $i < 1000; $i++) {
    $conn = new \PDO("mysql:host=$servername;dbname=$database", $username, $password);
    $conn->query('SHOW TABLES;');
    $conn = null;
}

$end = microtime(true);
$elapsed = $end - $start;

echo "Database:  $elapsed seconds\n";