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<?php |
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namespace WebservicesNl\Utils; |
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/** |
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* Class FormatUtils. |
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*/ |
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class FormatUtils |
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{ |
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/** |
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* @var array |
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*/ |
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protected static $formats = [ |
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'decimal' => [ // SI Prefixes (decimal) |
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'mod' => 1000, |
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'units' => ['B', 'kB', 'MB', 'GB', 'TB', 'PB'], |
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], |
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'binary' => [ // IEC prefixes (binary) |
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'mod' => 1024, |
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'units' => ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB'], |
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], |
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]; |
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/** |
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* Return a formatted string (from bytes) in decimal or binary. |
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* |
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* @param int|string|float $size |
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* @param int $precision |
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* @param string $format either binary or decimal |
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* |
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* @throws \InvalidArgumentException |
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* |
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* @return string |
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*/ |
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public static function formatBytes($size, $precision = 0, $format = 'decimal') |
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{ |
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if (!array_key_exists($format, self::$formats)) { |
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throw new \InvalidArgumentException('Not a valid format'); |
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} |
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$format = self::$formats[$format]; |
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$precision = (int) $precision; |
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/** @var float $base */ |
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$base = log((float) $size, $format['mod']); |
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$key = (int) floor($base); |
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$value = round(pow($format['mod'], $base - floor($base)), $precision); |
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return sprintf('%.' . $precision . 'f %s', $value, $format['units'][$key]); |
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} |
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} |
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webservices-nl /
utils
