php convert bytes to mb

1function toByteSize($p_sFormatted) {
2    $aUnits = array('B'=>0, 'KB'=>1, 'MB'=>2, 'GB'=>3, 'TB'=>4, 'PB'=>5, 'EB'=>6, 'ZB'=>7, 'YB'=>8);
3    $sUnit = strtoupper(trim(substr($p_sFormatted, -2)));
4    if (intval($sUnit) !== 0) {
5        $sUnit = 'B';
6    }
7    if (!in_array($sUnit, array_keys($aUnits))) {
8        return false;
9    }
10    $iUnits = trim(substr($p_sFormatted, 0, strlen($p_sFormatted) - 2));
11    if (!intval($iUnits) == $iUnits) {
12        return false;
13    }
14    return $iUnits * pow(1024, $aUnits[$sUnit]);
15}

1<?php
2// Snippet from PHP Share: http://www.phpshare.org
3
4    function formatSizeUnits($bytes)
5    {
6        if ($bytes >= 1073741824)
7        {
8            $bytes = number_format($bytes / 1073741824, 2) . ' GB';
9        }
10        elseif ($bytes >= 1048576)
11        {
12            $bytes = number_format($bytes / 1048576, 2) . ' MB';
13        }
14        elseif ($bytes >= 1024)
15        {
16            $bytes = number_format($bytes / 1024, 2) . ' KB';
17        }
18        elseif ($bytes > 1)
19        {
20            $bytes = $bytes . ' bytes';
21        }
22        elseif ($bytes == 1)
23        {
24            $bytes = $bytes . ' byte';
25        }
26        else
27        {
28            $bytes = '0 bytes';
29        }
30
31        return $bytes;
32}
33?>
34

1<?php 
2  function tobytes($size, $type)
3  {
4    $types = array("B", "KB", "MB", "GB", "TB", "PB"); //You can add the rest if needed..
5    
6    if($key = array_search($type, $types))
7      return $size * pow(1024, $key);
8    else return "invalid type";
9  }
10  
11  echo tobytes(15, "MB"); //15728640
12  echo tobytes(2, "KB"); //2048
13  echo tobytes(3, "w/e"); //invalid type 
14?>
15

1function formatBytes($bytes, $precision = 2) { 
2    $units = array('B', 'KB', 'MB', 'GB', 'TB'); 
3
4    $bytes = max($bytes, 0); 
5    $pow = floor(($bytes ? log($bytes) : 0) / log(1024)); 
6    $pow = min($pow, count($units) - 1); 
7
8    // Uncomment one of the following alternatives
9    // $bytes /= pow(1024, $pow);
10    // $bytes /= (1 << (10 * $pow)); 
11
12    return round($bytes, $precision) . ' ' . $units[$pow]; 
13}