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<?php
namespace Mmccook\JsonCanonicalizator;
class Utils
{
/**
* @param array $array
* @return bool
*/
public static function isAssoc(array $array): bool
{
$keys = array_keys($array);
return array_keys($keys) !== $keys;
}
public static function asHex(string $data): string
{
return rtrim(chunk_split(bin2hex($data), 2, ' '));
}
public static function es6NumberFormat(float $number): string
{
if (is_nan($number) || is_infinite($number)) {
throw new \RuntimeException("can't use Nan or Infinity in json");
}
if (0.0 === $number) {
return '0';
}
$sign = '';
if ($number < 0) {
$sign = '-';
$number = -$number;
}
if ($number < 1e+21 && $number >= 1e-6) {
$formatted = sprintf('%F', $number);
$formatted = rtrim($formatted, '0'); // first remove all zeros at the end
$formatted = rtrim($formatted, '.'); // If the string now ends with a decimal point, then remove it, too.
} else {
$formatted = sprintf('%e', $number);
$parts = explode('e', $formatted);
$parts[0] = rtrim($parts[0], '0');
$parts[0] = rtrim($parts[0], '.');
$formatted = implode('e', $parts);
}
return $sign . $formatted;
}
}
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