Php/docs/function.idn-to-utf8
来自菜鸟教程
idn_to_utf8
(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
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
]]] ) : string|false
This function converts a Unicode domain name from an IDNA ASCII-compatible format to plain Unicode, encoded in UTF-8.
参数
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
(deprecated as of PHP 7.2.0) for IDNA 2003 orINTL_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 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_*.
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 variant is now
|
7.2.0 | INTL_IDNA_VARIANT_2003 has been deprecated; use
|
范例
Example #1 idn_to_utf8() example
<?phpecho idn_to_utf8('xn--tst-qla.de'); ?>
以上例程会输出:
täst.de