wp-includes/Requests/src/IdnaEncoder.php:19IDNA URL encoder
class IdnaEncoder { /** * ACE prefix used for IDNA * * @link https://tools.ietf.org/html/rfc3490#section-5 * @var string */ const ACE_PREFIX = 'xn--'; /** * Maximum length of a IDNA URL in ASCII. * * @see \WpOrg\Requests\IdnaEncoder::to_ascii() * * @since 2.0.0 * * @var int */ const MAX_LENGTH = 64; /**#@+ * Bootstrap constant for Punycode * * @link https://tools.ietf.org/html/rfc3492#section-5 * @var int */ const BOOTSTRAP_BASE = 36; const BOOTSTRAP_TMIN = 1; const BOOTSTRAP_TMAX = 26; const BOOTSTRAP_SKEW = 38; const BOOTSTRAP_DAMP = 700; const BOOTSTRAP_INITIAL_BIAS = 72; const BOOTSTRAP_INITIAL_N = 128; /**#@-*/ /** * Encode a hostname using Punycode * * @param string|Stringable $hostname Hostname * @return string Punycode-encoded hostname * @throws \WpOrg\Requests\Exception\InvalidArgument When the passed argument is not a string or a stringable object. */ public static function encode($hostname) { if (InputValidator::is_string_or_stringable($hostname) === false) { throw InvalidArgument::create(1, '$hostname', 'string|Stringable', gettype($hostname)); } $parts = explode('.', $hostname); foreach ($parts as &$part) { $part = self::to_ascii($part); } return implode('.', $parts); } /** * Convert a UTF-8 text string to an ASCII string using Punycode * * @param string $text ASCII or UTF-8 string (max length 64 characters) * @return string ASCII string * * @throws \WpOrg\Requests\Exception Provided string longer than 64 ASCII characters (`idna.provided_too_long`) * @throws \WpOrg\Requests\Exception Prepared string longer than 64 ASCII characters (`idna.prepared_too_long`) * @throws \WpOrg\Requests\Exception Provided string already begins with xn-- (`idna.provided_is_prefixed`) * @throws \WpOrg\Requests\Exception Encoded string longer than 64 ASCII characters (`idna.encoded_too_long`) */ public static function to_ascii($text) { // Step 1: Check if the text is already ASCII if (self::is_ascii($text)) { // Skip to step 7 if (strlen($text) < self::MAX_LENGTH) { return $text; } throw new Exception('Provided string is too long', 'idna.provided_too_long', $text); } // Step 2: nameprep $text = self::nameprep($text);Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/Requests/src/IdnaEncoder.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.