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Simple PHP function that formats the bytes to the desired form. Possible unit options are:
- Byte (B)
- Kilobyte (KB)
- Megabyte (MB)
- Gigabyte (GB)
- Terabyte (TB)
- Petabyte (PB)
- Exabyte (EB)
- Zettabyte (ZB)
- Yottabyte (YB)
Function takes three parameter: (bytes mandatory, unit optional, decimals optional)
PHP byteFormat function for formatting bytes
<?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); } ?>
Example usage
echo byteFormat(4096, "B") ."\n"; echo byteFormat(8, "B", 2) . "\n"; echo byteFormat(1, "KB", 5) . "\n"; echo byteFormat(1073741824, "B", 0) . "\n"; echo byteFormat(1073741824, "KB", 0) . "\n"; echo byteFormat(1073741824, "MB") . "\n"; echo byteFormat(1073741824) . "\n"; echo byteFormat(1073741824, "TB", 10) . "\n"; echo byteFormat(1099511627776, "PB", 6) . "\n";
Prints
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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January 5, 2010 at 11:11 am
[...] "n"; echo byteFormat(1099511627776, "PB", 6) . "n";Kaynak: if-not-true-then-false.com Düzenleme için Umut‘a teşekkürler. Benzer YazılarPHP – Resim üzerine yazı yazma [...]
January 10, 2010 at 7:05 am
Raaaddddd!
Thanks dude. Saved me a bunch of time.
I used this for formating bytes, btw:
/**
* filesize function.
*
* @access public
* @static
* @param mixed $size
* @param int $round. (default: 0)
* @return void
*/
// http://www.veign.com/code-view.php?type=web&codeid=74
public static function filesize($size, $round = 0) {
$sizes = array(‘b’, ‘kb’, ‘meg’, ‘gb’, ‘tb’, ‘pb’, ‘eb’, ‘zb’, ‘yb’);
for ($i=0; $size > 1024 && isset($sizes[$i+1]); $i++) $size /= 1024;
return round($size, $round).$sizes[$i];
}