Format echo time number with 'k', 'kk', and so on

Question

In various places on the internet it is possible to view formatting of numbers like "150k", "1kk". Most people know that 150k corresponds to 150,000 and 1kk corresponds to 1,000,000.

EXAMPLE:

This would be useful because sometimes I move with large numbers, which aesthetically is bad, because sometimes exceeds limits! With this type of formatting the number would always be summarized.

I would like this formatting to start from the first "1,000" which would soon be "1k", I would also like the number to always be rounded up and not down.

Examples of formatting:

10             =  10
100            =  100
999            =  999

1.000          =  1k
1.499          =  1k
1.501          =  2k
10.000         =  10k
100.000        =  100k

1.000.000      =  1kk
10.000.000     =  10kk
100.000.000    =  100kk

1.000.000.000  =  10kkk

I would then like to know how to do this at the time of echo.

Answer 1

Here is your function:

function reduz_numero($n) {
    if ($n < 0) return "-" . reduz_numero(-$n);
    $k = "";
    while (round($n) >= 1000) {
        $k = $k . "k";
        $n = $n / 1000;
    }
    return round($n) . $k;
}

Some tests with her, using echo:

echo "         5->" . reduz_numero(         5) . "\n"; // Mostra "5"
echo "       999->" . reduz_numero(       999) . "\n"; // Mostra "999"
echo "      1000->" . reduz_numero(      1000) . "\n"; // Mostra "1k"
echo "      1001->" . reduz_numero(      1001) . "\n"; // Mostra "1k"
echo "      1499->" . reduz_numero(      1499) . "\n"; // Mostra "1k"
echo "      1500->" . reduz_numero(      1500) . "\n"; // Mostra "2k"
echo "      1501->" . reduz_numero(      1501) . "\n"; // Mostra "2k"
echo "     10000->" . reduz_numero(     10000) . "\n"; // Mostra "10k"
echo "    999499->" . reduz_numero(    999499) . "\n"; // Mostra "999k"
echo "    999500->" . reduz_numero(    999500) . "\n"; // Mostra "1kk"
echo "    999501->" . reduz_numero(    999501) . "\n"; // Mostra "1kk"
echo "1000000000->" . reduz_numero(1000000000) . "\n"; // Mostra "1kkk"
echo "    -77777->" . reduz_numero(    -77777) . "\n"; // Mostra "-78k"
echo "   9499999->" . reduz_numero(   9499999) . "\n"; // Mostra "9kk"
echo "   9500000->" . reduz_numero(   9500000) . "\n"; // Mostra "10kk"

See it working on ideone.

^{_{EDITED: Now also works with negative numbers. :)
EDITED 2: Bugfix for 9499999, was showing "10kk" instead of "9kk".}}

Answer 2

I’ve never written anything in php, so it’s unlikely that it will work...

function reduz($n) {
    $n=floor($n);
    if ($n      < 1000) return $n;
    if ($n%1000 <  500) return reduz(  $n/1000). "k"
    if ($n%1000 >= 500) return reduz(1+$n/1000). "k";
}