百科狗idn_to_utf8() - idn函数
idn_to_utf8()
(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.2, PECL idn >= 0.1)
将域名从IDNA ASCII转换为Unicode
说明
过程化风格idn_to_utf8(string $domain[,int $options= IDNA_DEFAULT[,int $variant= INTL_IDNA_VARIANT_UTS46[,array
&$idna_info]]]): stringThis function converts a Unicode domain name from an IDNA ASCII-compatible format to plain Unicode, encoded in UTF-8.
参数
$domainDomain to convert in an IDNA ASCII-compatible format.
$options
Conversion options - combination of IDNA_* constants(except IDNA_ERROR_* constants).
$variantEither INTL_IDNA_VARIANT_2003(deprecated as of PHP 7.2.0)for IDNA 2003 or INTL_IDNA_VARIANT_UTS46(only available as of ICU 4.6)for UTS #46.
This parameter can be used only if INTL_IDNA_VARIANT_UTS46 was used for$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_*.
返回值
The domain name in Unicode, encoded in UTF-8,或者在失败时返回FALSE
更新日志
| 版本 | 说明 |
|---|---|
| 7.4.0 | The default value of$variantis now INTL_IDNA_VARIANT_UTS46 instead of the deprecated INTL_IDNA_VARIANT_2003. |
| 7.2.0 | INTL_IDNA_VARIANT_2003 has been deprecated; use INTL_IDNA_VARIANT_UTS46 instead. |
| 5.4.0/PECL 2.0.0b1 | Added the parameters$variantand$idna_info; UTS #46 support(requires ICU ≥ 4.6). |
范例
idn_to_utf8() example
以上例程会输出：
täst.de
参见
idn_to_ascii()Convert domain name to IDNA ASCII form
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punyAdapt should be patched:
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