(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.2, PECL idn >= 0.1)
idn_to_ascii — Convert domain name to IDNA ASCII form
Procedural style
$domain
,$flags
= IDNA_DEFAULT
,$variant
= INTL_IDNA_VARIANT_UTS46
,&$idna_info
= null
This function converts a Unicode domain name to an IDNA ASCII-compatible format.
domain
The domain to convert, which must be UTF-8 encoded.
flags
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 encoded in ASCII-compatible form, 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_ascii() example
<?php
echo idn_to_ascii('täst.de');
?>
The above example will output:
xn--tst-qla.de