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idn_to_utf8

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(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

Description

Procedural style

idn_to_utf8 ( string $domain [, int $options = IDNA_DEFAULT [, int $variant = INTL_IDNA_VARIANT_UTS46 [, array &$idna_info ]]] ) : string

This function converts a Unicode domain name from an IDNA ASCII-compatible format to plain Unicode, encoded in UTF-8.

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Parameters

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 for IDNA 2003 or INTL_IDNA_VARIANT_UTS46 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_*.

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Return Values

The domain name in Unicode, encoded in UTF-8, or FALSE on failure

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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).

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Examples

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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See Also

Find a PHP function

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Document created the 30/01/2003, last modified the 26/10/2018
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References

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