Formats given integer into short version with a suffix. For example "1500" will become "1K+".

format_number_in_k_notation.php

<?php

if (!function_exists('format_number_in_k_notation')) {
    function format_number_in_k_notation(int $number): string
    {
        $suffixByNumber = function () use ($number) {
            if ($number < 1000) {
                return sprintf('%d', $number);
            }

            if ($number < 1000000) {
                return sprintf('%d%s', floor($number / 1000), 'K+');
            }

            if ($number >= 1000000 && $number < 1000000000) {
                return sprintf('%d%s', floor($number / 1000000), 'M+');
            }

            if ($number >= 1000000000 && $number < 1000000000000) {
                return sprintf('%d%s', floor($number / 1000000000), 'B+');
            }

            return sprintf('%d%s', floor($number / 1000000000000), 'T+');
        };

        return $suffixByNumber();
    }
}

dump(format_number_in_k_notation(123)); // "123"
dump(format_number_in_k_notation(73000)); // "73K+"
dump(format_number_in_k_notation(216000)); // "216K+"
dump(format_number_in_k_notation(50400123)); // "50M+"
dump(format_number_in_k_notation(12213500100600)); // "12T+"

die;