Simplify sizes

simplify.php

<?php

function simplify(int | float $value) : string {

    $regex = '/^-?\d+(?:\.\d{0,1})?/';

    $format = function ($value) use ($regex) {
        preg_match($regex, $value, $matches, PREG_OFFSET_CAPTURE);

        return str_replace('.0', '', $matches[0][0]);
    }

    // Hundred (or less)
    if ($value < 1000) {
        return $value;
    }

    // Thounsads
    if ($value < 1000000) {
        return $format($value / 1000) . 'k';
    }

    // Millions
    if ($value < 1000000000) {
        return $format($value / 1000000) . 'M';
    }

    // Billions
    return $format($value / 1000000000) . 'B';
}