format bytes to kB, MB, GB … 

How to convert bytes to Kilobytes, megabytes and so on?.


function format_bytes($size, $precision = 2){
    $base = log($size) / log(1024);
    $suffixes = array('', 'kB', 'MB', 'GB', 'TB' , 'PB' , 'EB');
    return round(pow(1024, $base - floor($base)), $precision) . $suffixes[floor($base)];
}

how to use it


    echo format_bytes(888888);