php获取文件大小的方法

复制代码 代码如下:
static function convert($size) {
        $unit=array("b","kb","mb","gb","tb","pb");
        return @round($size/pow(1024,($i=floor(log($size,1024)))),2)." ".$unit[$i];
    }
也可用下面这种方法复制代码 代码如下:/**
 * Returns a human readable filesize
 */
function HumanReadableFilesize($size) {
    $mod = 1024;
    $units = explode(" ","B KB MB GB TB PB");
    for ($i = 0; $size > $mod; $i++) {
        $size /= $mod;
    }
    return round($size, 2) . " " . $units[$i];
}