PHP文件大小格式化函数合集_PHP
比如碰到一个很大的文件有49957289167B,大家一看这么一长串的数字后面单位是字节B,还是不知道这个文件的大小是一个什么概念,我们把它转换成GB为单位,就是46.53GB。用下面这些函数就可以完成这个工作:
复制代码 代码如下:
//转换单位
function setupSize($fileSize) {
$size = sprintf("%u", $fileSize);
if($size == 0) {
return("0 Bytes");
}
$sizename = array(" Bytes", " KB", " MB", " GB", " TB", " PB", " EB", " ZB", " YB");
return round($size/pow(1024, ($i = floor(log($size, 1024)))), 2) . $sizename[$i];
}
function byte_format($size, $dec=2){
$a = array("B", "KB", "MB", "GB", "TB", "PB");
$pos = 0;
while ($size >= 1024) {
$size /= 1024;
$pos++;
}
return round($size,$dec)." ".$a[$pos];
}
/* Use : echo format_size(filesize("fichier"));
Example result : 13,37 Ko */
function format_size($o) {
$size = array('Go' => 1073741824, 'Mo' => 1048576, 'Ko' => 1024, 'octets' => 1);
foreach ($size as $k => $v)
if ($o >= $v) {
if ($k == 'octets')
return round($o).' '.$k;
return number_format($o / $v, 2, ',', ' ').' '.$k;
}
}
/**
* 文件大小格式化
* @param integer $size 初始文件大小,单位为byte
* @return array 格式化后的文件大小和单位数组,单位为byte、KB、MB、GB、TB
*/
function file_size_format($size = 0, $dec = 2) {
$unit = array("B", "KB", "MB", "GB", "TB", "PB");
$pos = 0;
while ($size >= 1024) {
$size /= 1024;
$pos++;
}
$result['size'] = round($size, $dec);
$result['unit'] = $unit[$pos];
return $result['size'].$result['unit'];
}
echo file_size_format(123456789);
/**
* 文件大小单位格式化
* @param $bytes 文件实际大小,单位byte
* @param $prec 转换后精确度,默认精确到小数点后两位
* @return 转换后的大小+单位的字符串
*/
function fsizeformat($bytes,$prec=2){
$rank=0;
$size=$bytes;
$unit="B";
while($size>1024){
$size=$size/1024;
$rank++;
}
$size=round($size,$prec);
switch ($rank){
case "1":
$unit="KB";
break;
case "2":
$unit="MB";
break;
case "3":
$unit="GB";
break;
case "4":
$unit="TB";
break;
default :
}
return $size." ".$unit;
}
/**
* 容量格式化
* @param String 文件名(文件路径)
* @return 如果文件存在返回格式化的字符串 如果错误返回错误信息 Unknown File
*/
function sizeFormat ($fileName){
//获取文件的大小
@ $filesize=filesize($fileName);
//如果文件不存在返回错误信息
if(false==$filesize){
return 'Unknown File';
}
//格式化文件容量信息
if ($filesize >= 1073741824) $filesize = round($filesize / 1073741824 * 100) / 100 . ' GB';
elseif ($filesize >= 1048576) $filesize = round($filesize / 1048576 * 100) / 100 . ' MB';
elseif ($filesize >= 1024) $filesize = round($filesize / 1024 * 100) / 100 . ' KB';
else $filesize = $filesize . ' Bytes';
return $filesize;
}
//测试函数
echo sizeFormat('config.inc.php');
/**
* 文件大小格式化
* @param type $filesize
*/
private function sizeCount($filesize)
{
if ($filesize >= 1073741824) {
$filesize = round($filesize / 1073741824 * 100) / 100 . ' GB';
}
else if ($filesize >= 1048576) {
$filesize = round($filesize / 1048576 * 100) / 100 . ' MB';
}
else if ($filesize >= 1024) {
$filesize = round($filesize / 1024 * 100) / 100 . ' KB';
}
return $filesize;
}
//该函数最主要的是根据文件的字节数,判断应当选择的统计单位,也就是说一个文件用某一单位比如MB,那么该文件肯定小于1GB,否则当然要用GB作为单位了,而且文件要大于KB,不然的话得用更小的单位统计。该函数代码如下
//size() 统计文件大小
function size($byte)
{
if($byte $unit="B";
}
else if($byte $byte=round_dp($byte/1024, 2);
$unit="KB";
}
else if($byte $byte=round_dp($byte/1024, 2);
$unit="KB";
}
else if($byte $byte=round_dp($byte/1024, 2);
$unit="KB";
}
else if ($byte $byte=round_dp($byte/1048576, 2);
$unit="MB";
}
else if ($byte $byte=round_dp($byte/1048576,2);
$unit="MB";
}
else if ($byte $byte=round_dp($byte/1048576, 2);
$unit="MB";
}
else {
$byte=round_dp($byte/1073741824, 2);
$unit="GB";
}
$byte .= $unit;
return $byte;
}
//辅助函数 round_up(),该函数用来取舍小数点位数的,四舍五入。
function round_dp($num , $dp)
{
$sh = pow(10 , $dp);
return (round($num*$sh)/$sh);
}
这样我们就能很好额统计任何一个文件的大小了,首先通过系统自带的filesize()函数获得文件的字节数,再用上面的这些函数换算成适当的单位就可以了

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.
