function humanFileSize($size)
{
if ($size >= 1073741824) {
$fileSize = round($size / 1024 / 1024 / 1024,1) . 'GB';
} elseif ($size >= 1048576) {
$fileSize = round($size / 1024 / 1024,1) . 'MB';
} elseif($size >= 1024) {
$fileSize = round($size / 1024,1) . 'KB';
} else {
$fileSize = $size . ' bytes';
}
return $fileSize;
}
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...工作得很好,除了:我不能手动选择我需要显示的格式,比如我想以MB显示只有文件大小.目前,如果它在GB范围内,它只会以GB显示.
另外,如何将小数限制为2?
Nie*_*sol 48
尝试这样的事情:
function humanFileSize($size,$unit="") {
if( (!$unit && $size >= 1<<30) || $unit == "GB")
return number_format($size/(1<<30),2)."GB";
if( (!$unit && $size >= 1<<20) || $unit == "MB")
return number_format($size/(1<<20),2)."MB";
if( (!$unit && $size >= 1<<10) || $unit == "KB")
return number_format($size/(1<<10),2)."KB";
return number_format($size)." bytes";
}
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Vai*_*das 36
Jeffrey Sambells有很好的例子:
function human_filesize($bytes, $dec = 2)
{
$size = array('B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB');
$factor = floor((strlen($bytes) - 1) / 3);
return sprintf("%.{$dec}f", $bytes / pow(1024, $factor)) . @$size[$factor];
}
print human_filesize(filesize('example.zip'));
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Roe*_*oey 11
我正在使用这种方法:
function byteConvert($bytes)
{
if ($bytes == 0)
return "0.00 B";
$s = array('B', 'KB', 'MB', 'GB', 'TB', 'PB');
$e = floor(log($bytes, 1024));
return round($bytes/pow(1024, $e), 2).$s[$e];
}
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在o(1)中效果很好.
为了扩展 Vaidas 的答案,您应该如何执行新的 IEC 标准:
function human_readable_bytes($bytes, $decimals = 2, $system = 'binary')
{
$mod = ($system === 'binary') ? 1024 : 1000;
$units = array(
'binary' => array(
'B',
'KiB',
'MiB',
'GiB',
'TiB',
'PiB',
'EiB',
'ZiB',
'YiB',
),
'metric' => array(
'B',
'kB',
'MB',
'GB',
'TB',
'PB',
'EB',
'ZB',
'YB',
),
);
$factor = floor((strlen($bytes) - 1) / 3);
return sprintf("%.{$decimals}f%s", $bytes / pow($mod, $factor), $units[$system][$factor]);
}
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从技术上讲,根据存储设备等的规范,您应该使用公制系统作为默认值(这就是为什么 Google 转换器将 kB -> MB 显示为 mod 1000 而不是 1024)。
我使用(1024 = 1KB)并支持从 KB 到 YB 的一种非常短的 3 行方法如下:
<?php
/**
* Converts a long string of bytes into a readable format e.g KB, MB, GB, TB, YB
*
* @param {Int} num The number of bytes.
*/
function readableBytes($bytes) {
$i = floor(log($bytes) / log(1024));
$sizes = array('B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB');
return sprintf('%.02F', $bytes / pow(1024, $i)) * 1 . ' ' . $sizes[$i];
}
// "1000 B"
echo readableBytes(1000);
// "9.42 MB"
echo readableBytes(9874321);
// "9.31 GB"
// The number of bytes as a string is accepted as well
echo readableBytes("10000000000");
// "648.37 TB"
echo readableBytes(712893712304234);
// "5.52 PB"
echo readableBytes(6212893712323224);
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这是我的自定义函数,用于显示人类可读的文件大小:
function getHumanReadableSize($bytes) {
if ($bytes > 0) {
$base = floor(log($bytes) / log(1024));
$units = array("B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"); //units of measurement
return number_format(($bytes / pow(1024, floor($base))), 3) . " $units[$base]";
} else return "0 bytes";
}
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