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Convert Bytes to corresponding size

/ Published in: PHP
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Takes a number in bytes and returns the number in (KB,MB,GB) for human-readable format.

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  1. <?php
  2.  
  3. function ByteSize($bytes) 
  4.     {
  5.     $size = $bytes / 1024;
  6.     if($size < 1024)
  7.         {
  8.         $size = number_format($size, 2);
  9.         $size .= ' KB';
  10.         } 
  11.     else 
  12.         {
  13.         if($size / 1024 < 1024) 
  14.             {
  15.             $size = number_format($size / 1024, 2);
  16.             $size .= ' MB';
  17.             } 
  18.         else if ($size / 1024 / 1024 < 1024)  
  19.             {
  20.             $size = number_format($size / 1024 / 1024, 2);
  21.             $size .= ' GB';
  22.             } 
  23.         }
  24.     return $size;
  25.     }
  26.  
  27. // Returns '19.28mb'
  28. print ByteSize('20211982');
  29.  
  30. ?>

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