How to format bytes to kilobytes, megabytes, gigabytes in PHP

This is the best function I found on StackOverflow: function formatBytes($bytes, $precision = 2) { $units = array(‘B’, ‘KB’, ‘MB’, ‘GB’, ‘TB’); $bytes = max($bytes, 0); $pow = floor(($bytes ? log($bytes) : 0) / log(1024)); $pow = min($pow, count($units) – 1); // Uncomment one of the following alternatives // If 1 kilobytes = 1024 bytes // $bytes /= pow(1024, $pow); // If 1 kilobytes = 1000 bytes // $bytes /= (1 < < (10 * $pow)); return round($bytes, $precision) . ' ' . $units[$pow]; }