格式化显示

//格式化为：{n}GB{n}MB{n}KB的样式
function formatByteSize($bytes) {
    $format = $bytes . 'B';
    foreach (array(1 => 'KB', 2 => 'MB', 3 => 'GB') as $exp => $unit) {
        $base = pow(1024, $exp);
        if ($bytes > $base) {
            $format = number_format($bytes / $base, 2) . $unit;
            continue;
        } else {
            break;
        }
    }
    return $format;
}

//格式化为：{n}天{n}小时{n}分{n}秒的样式
function formatSecondTime($time) {
    $format = '';
    $units = array('天' => 86400, '小时' => 3600, '分' => 60, '秒' => 1);
    foreach ($units as $unit => $base) {
        if ($base > 0) {
            $nowUnitValue = intval($time / $base);
            $format .= $nowUnitValue.$unit;
            $time = $time - ($nowUnitValue * $base);
        }
    }
    return $format;
}

//格式化为：{n}%的样式
function formatPercent($numerator, $denominator) {
    return $denominator ? number_format(($numerator / $denominator) * 100, 2).'%' : 0;
}