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PHP idn_to_ascii

PHP original manual for idn_to_ascii [ show | php.net ]

(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

Procedural style

string idn_to_ascii ( string $domain [, int $options = IDNA_DEFAULT [, int $variant = INTL_IDNA_VARIANT_2003 [, array &$idna_info ]]] )

This function converts a Unicode domain name to an IDNA ASCII-compatible format.

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_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_*.

The domain name encoded in ASCII-compatible form, or FALSE on failure

Version	Description
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.

Example #1 idn_to_ascii() example


<?php

echo idn_to_ascii('tÃ¤st.de'); 

?>

The above example will output:

xn--tst-qla.de