typing-speed.php

<?php
// Just run the script and start typing asap. Hit enter to get a calculation.
$start = microtime(true);

$read = fgets(STDIN);

$end = microtime(true);

echo substr_count($read, " ") . " words in " . ($end - $start) . " seconds" . PHP_EOL;

$interval = $end - $start;
if ($interval < 60) {
    $times = 60 / $interval;
} else {
    $times = $interval / 60;
}

echo (round(substr_count($read, " ") * $times)) . " words per minute!" . PHP_EOL;