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PHP byteFormat function
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<?php | |
function byteFormat($bytes, $unit = "", $decimals = 2) { | |
$units = array('B' => 0, 'KB' => 1, 'MB' => 2, 'GB' => 3, 'TB' => 4, | |
'PB' => 5, 'EB' => 6, 'ZB' => 7, 'YB' => 8); | |
$value = 0; | |
if ($bytes > 0) { | |
// Generate automatic prefix by bytes | |
// If wrong prefix given | |
if (!array_key_exists($unit, $units)) { | |
$pow = floor(log($bytes)/log(1024)); | |
$unit = array_search($pow, $units); | |
} | |
// Calculate byte value by prefix | |
$value = ($bytes/pow(1024,floor($units[$unit]))); | |
} | |
// If decimals is not numeric or decimals is less than 0 | |
// then set default value | |
if (!is_numeric($decimals) || $decimals < 0) { | |
$decimals = 2; | |
} | |
// Format output | |
return sprintf('%.' . $decimals . 'f '.$unit, $value); | |
} | |
?> |
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echo byteFormat(4096, "B"); | |
echo byteFormat(8, "B", 2); | |
echo byteFormat(1, "KB", 5); | |
echo byteFormat(1073741824, "B", 0); | |
echo byteFormat(1073741824, "KB", 0); | |
echo byteFormat(1073741824, "MB"); | |
echo byteFormat(1073741824); | |
echo byteFormat(1073741824, "TB", 10); | |
echo byteFormat(1099511627776, "PB", 6); |
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4096.00 B | |
8.00 B | |
0.00098 KB | |
1073741824 B | |
1048576 KB | |
1024.00 MB | |
1.00 GB | |
0.0009765625 TB | |
0.000977 PB |
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