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@ 2014-09-06T14:32:35Z

<?php

function format($number) {
    $prefixes = 'kMGTPEZY';
    if ($number >= 1000) {
        $log1000 = floor(log10($number)/3);
        return floor($number/pow(1000, $log1000)).$prefixes[$log1000-1];
    }
    return $number;
}

echo format(1000);

Output
Performance
VLD
References
Branches

log10: documentation ( source)
floor: documentation ( source)
pow: documentation ( source)

preferences:dark modelive preview

29.69 ms | 402 KiB | 5 Q