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idn_to_ascii
(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.2, PECL idn >= 0.1)
idn_to_ascii — Convert domain name to IDNA ASCII form
Description
Procedural style
$domain
[, int $options = IDNA_DEFAULT
[, int $variant = INTL_IDNA_VARIANT_UTS46
[, array &$idna_info
]]] ) : stringThis function converts a Unicode domain name to an IDNA ASCII-compatible format.
Parameters
-
domain -
The domain to convert, which must be UTF-8 encoded.
-
options -
Conversion options - combination of IDNA_* constants (except IDNA_ERROR_* constants).
-
variant -
Either
INTL_IDNA_VARIANT_2003for IDNA 2003 orINTL_IDNA_VARIANT_UTS46for UTS #46. -
idna_info -
This parameter can be used only if
INTL_IDNA_VARIANT_UTS46was used forvariant. 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_*.
Changelog
| 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.
|
| 5.4.0/PECL 2.0.0b1 |
Added the parameters variant and
idna_info; UTS #46 support (requires ICU ≥ 4.6).
|
Examples
Example #1 idn_to_ascii() example
<?php
echo idn_to_ascii('täst.de');
?>
The above example will output:
xn--tst-qla.de
Can not display this page of the Infobrol website
Type of error (18-01)
Unknown format specifier "&"Please try again in a few minutes…
Steph