(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.2, PECL idn >= 0.1)
idn_to_utf8 — Convert domain name from IDNA ASCII to Unicode
Procedural style
idn_to_utf8 ( string $domain [, int $options = IDNA_DEFAULT [, int $variant = INTL_IDNA_VARIANT_UTS46 [, array &$idna_info ]]] ) : string|false
This function converts a Unicode domain name from an IDNA ASCII-compatible format to plain Unicode, encoded in UTF-8.
domain
Domain to convert in an IDNA ASCII-compatible format.
options
Conversion options - combination of IDNA_* constants (except IDNA_ERROR_* constants).
variant
Either INTL_IDNA_VARIANT_2003
(deprecated as of PHP 7.2.0) for IDNA 2003 or INTL_IDNA_VARIANT_UTS46
(only available as of ICU 4.6) for UTS #46.
idna_info
This parameter can be used only if INTL_IDNA_VARIANT_UTS46
was used for variant
. In that case, it will be filled with an array with the keys 'result'
, the possibly illegal result of the transformation, 'isTransitionalDifferent'
, a boolean indicating whether the usage of the transitional mechanisms of UTS #46 either has or would have changed the result and 'errors'
, which is an int representing a bitset of the error constants IDNA_ERROR_*.
The domain name in Unicode, encoded in UTF-8, or false
on failure
Version | Description |
---|---|
7.4.0 | The default value of variant is now INTL_IDNA_VARIANT_UTS46 instead of the deprecated INTL_IDNA_VARIANT_2003 . |
7.2.0 | INTL_IDNA_VARIANT_2003 has been deprecated; use INTL_IDNA_VARIANT_UTS46 instead. |
Example #1 idn_to_utf8() example
<?php echo idn_to_utf8('xn--tst-qla.de'); ?>
The above example will output:
täst.de
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https://www.php.net/manual/en/function.idn-to-utf8.php