Home > Backend Development > PHP Tutorial > 将字节数转换成用户可读的格式_2

将字节数转换成用户可读的格式_2

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Release: 2016-06-20 12:27:39
Original
1262 people have browsed it

=Start=

接上篇「 将字节数转换成用户可读的格式」,上篇文章主要是使用Linux下已有的工具(numfmt,需要 GNU coreutils >= 8.21)进行转换,但是我记录这篇文章的最初目的是自己编码实现相关功能(比如写成一个alias/function放在.bashrc中方便日常使用),这篇文章的内容就是介绍通过各种编程语言来实现该功能。

参考解答:

1.awk/gawk

# OKecho "12454162221" | awk '    BEGIN {       split("B,KB,MB,GB,TB", Units, ",");    }    {       u = 1;       while ($1 >= 1024) {          $1 = $1 / 1024;          u += 1       }       $1 = sprintf("%.2f %s", $1, Units[u]);       print $0;    }' # OKecho "12454162221" | gawk 'BEGIN { split("KMGTPEZY",suff,//)}{  match($0,/([0-9]+)/,bits)  sz=bits[1]+0  i=0; while ((sz>1024)&&(i<length(suff))) { sz/=1024;i++ }  if (i) printf("%.3f %siB\n",sz,suff[i])  else   printf("%3i B\n",sz)}' # OKecho "12454162221" | awk '{  xin=$1;  if(xin==0) {    print "0 B";  } else {    x=(xin<0?-xin:xin);    s=(xin<0?-1:1);    split("B KiB MiB GiB TiB PiB",type);    for(i=5;y < 1;i--) {      y=x/(2^(10*i));    }    print y*s " " type[i+2];  };}'
Copy after login

2.Perl

echo "12454162221" | perl -ne 'if (/^(\d+)/){$l=log($1+.1);$m=int($l/log(1024)); printf("%6.1f\t%s\n",($1/(2**(10*$m))),("K","M","G","T","P")[$m-1]);}' # 最大以G为单位echo "12454162221" | perl -pe 's{([0-9]+)}{sprintf "%.1f%s", $1>=2**30? ($1/2**30, "G"): $1>=2**20? ($1/2**20, "M"): $1>=2**10? ($1/2**10, "K"): ($1, "")}e'
Copy after login

3.Python

defbytes_format(filesize, unit=1024):    unit = float(unit)    for countin ['Bytes','KB','MB','GB', 'TB', 'PB']:        if 0 < filesize < unit:            return '{0:.3f} {1}'.format(filesize, count)        filesize /= unit printbytes_format(12454162221)
Copy after login

4.PHP

<?php function bytes_format($numbers, $bytesize = 1024) {  $readable = array("",  "KB", "MB", "GB", "TB", "PB");  $index = 0;  while($numbers > $bytesize){      $numbers /= $bytesize;      $index++;  }  return("".round($numbers, 2)." ".$readable[$index]);}echobytes_format(12454162221) . "\n";echobytes_format(124541622210) . "\n";echobytes_format(1245416222100) . "\n";
Copy after login

参考链接:

  • http://unix.stackexchange.com/questions/44040/a-standard-tool-to-convert-a-byte-count-into-human-kib-mib-etc-like-du-ls1
  • http://stackoverflow.com/questions/15854332/file-size-in-human-readable-format
  • http://www.kossboss.com/linux—bytes-to-human-readable-command
  • http://ram.kossboss.com/humanbytesawk/
  • http://ram.kossboss.com/linux-bytes-to-human-readable-command/
  • http://superuser.com/questions/553976/how-to-display-the-size-in-human-readable-format-in-the-find-command/554027#554027
  • http://serverfault.com/questions/62411/how-can-i-sort-du-h-output-by-size
  • http://codesnippets.fesslersoft.de/format-bytes-to-human-readable-size/
  • http://www.developerfeed.com/how-convert-bytes-human-readable-string-format-php/
  • http://www.ivankristianto.com/tips-convert-your-numbers-to-human-readable-format/

=END=

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template