Idn 函数
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idn_to_utf8

(PECL idn >= 0.1)

idn_to_utf8Convert ASCII encoded domain name to UTF-8

说明

string idn_to_utf8 ( string $ascii_domain [, int &$errorcode ] )

This function converts a ASCII encoded domain name to its original UTF-8 version.

参数

ascii_domain

The ASCII encoded domain name. Looks like "xn--..." if the it originally contained non-ASCII characters.

errorcode

Will be set to the IDNA error code.

返回值

The UTF-8 encoded version of the domain name or FALSE in case of an error. RFC 3490 4.2 states though "ToUnicode never fails. If any step fails, then the original input sequence is returned immediately in that step."

错误/异常

If an error occurs FALSE is returned and the optional errorcode is set. In addition a E_WARNING message is printed.

范例

Example #1 idn_to_utf8() example

First a simple example and then one explaining how to catch errors (which should never happen according to the RFC).

<?php

// maybe convert the result to ISO-8859-1 using utf8_decode()
echo idn_to_utf8("xn--tst-qla.de");

// Should never happen but to be sure...
$utf8 idn_to_utf8("xn--tst-qla.de"$errorcode);
if (
$utf8 === false) {
    
printf("Detected error %d: %s\n"$errorcodeidn_strerror($errorcode));
}

?>

上例的输出类似于:

t?st.de

参见


Idn 函数
php 手册 | 脚本学堂 | 脚本编程 | 网站编程 | 系统管理 | 服务器配置 | 数据库管理 | Php教程 | python教程 | 正则表达式 | 批处理脚本 | Centos教程 | Linux基础教程