PBKDF2 Benchmarking Script

pbkdf2_benchmark.php

<?php
$it = [ 1000, 2000, 4000, 8000, 16000, 32000, 64000, 128000, 256000, 512000, 1024000, 2048000, 4096000 ];
foreach ($it as $i) {
        $st = microtime(true);
        $c = \hash_pbkdf2(
            'sha256',
            'example of a simple plaintext message goes here',
            'something silly',
            $i,
            32,
            true
        );
        $en = microtime(true);
        $elapsed = number_format( $en - $st, 3);
        echo "{$i}\t{$elapsed}\n";
}