PHP iconv希腊/西里尔字母音译不起作用

问题描述

我有以下测试代码:

setlocale(LC_ALL, 'en_US.UTF8');
function t($text)
{
    echo "$text\n";
    echo "encoding: ", mb_detect_encoding($text), "\n";

    // transliterate
    $text = iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $text);
    echo "iconv: ", $text, "\n";
}

// Latvian alphabet
t('AĀBCČDEĒFGĢHIĪJKĶLĻMNŅOPRSŠTUŪVZŽ aābcčdeēfgģhiījkķlļmnņoprsštuūvzž');
// Greek alphabet
t('ΑαΒβΓγΔδΕεΖζΗηΘθΙιΚκΜμΝνΞξΟοΠπΡρΣσςΤτΥυΦφΧχΨψΩω');
// Cyrillic alphabet + some rarer versions
t('АБВГДЕЖЅЗИІКЛМНОПҀРСТѸФХѠЦЧШЩЪꙐЬѢꙖѤЮѦѪѨѬѮѰѲѴ абвгдеёжзийклмнопрстуфхцчшщъыьэюя');

及其输出:

AĀBCČDEĒFGĢHIĪJKĶLĻMNŅOPRSŠTUŪVZŽ aābcčdeēfgģhiījkķlļmnņoprsštuūvzž
encoding: UTF-8
iconv: AABCCDEEFGGHIIJKKLLMNNOPRSSTUUVZZ aabccdeefgghiijkkllmnnoprsstuuvzz

ΑαΒβΓγΔδΕεΖζΗηΘθΙιΚκΜμΝνΞξΟοΠπΡρΣσςΤτΥυΦφΧχΨψΩω
encoding: UTF-8
iconv: 

АБВГДЕЖЅЗИІКЛМНОПҀРСТѸФХѠЦЧШЩЪꙐЬѢꙖѤЮѦѪѨѬѮѰѲѴ абвгдеёжзийклмнопрстуфхцчшщъыьэюя
encoding: UTF-8
iconv: 

基本上，它忽略所有希腊和西里尔字母.为什么?

it essentially IGNOREs all greek and cyrillic characters. why?

我已经在两种环境下进行了测试，其中php -i | egrep "iconv (implementation|library)"可以输出以下两种情况:

i have tested on two environments, where php -i | egrep "iconv (implementation|library)" outputs either:

iconv implementation => libiconv
iconv library version => 1.11

或:

iconv implementation => libiconv
iconv library version => 1.13

我还尝试将ivonv内部编码设置为UTF-8，添加/删除了setlocale函数，但无济于事. iconv似乎只能识别拉丁字母和拉丁字母衍生的字符.

i have also tried setting ivonv internal encoding to UTF-8, adding/removing the setlocale function, but all of no avail. iconv seems to recognise only latin and derived-from-latin characters.

更新:iconv一定是有问题的，因为终端命令echo 'ΑαΒβΓγΔδ' | iconv -f utf-8 -t ASCII//TRANSLIT会产生错误iconv: (stdin):1:0: cannot convert，而echo 'āēī' | iconv -f utf-8 -t ASCII//TRANSLIT可以正常工作并输出aei.

UPDATE: It must be a problem with iconv as terminal command echo 'ΑαΒβΓγΔδ' | iconv -f utf-8 -t ASCII//TRANSLIT produces an error iconv: (stdin):1:0: cannot convert, while echo 'āēī' | iconv -f utf-8 -t ASCII//TRANSLIT works and outputs aei, as expected.

iconv --version输出iconv (GNU libiconv 1.14)(版权信息除外).

iconv --version outputs iconv (GNU libiconv 1.14) (besides the copyright information).

推荐答案

使用ASCII//IGNORE//TRANSLIT

iconv()停在第一个illegar char处，在该处截断了字符串，这是iconv()的默认行为，因此它不遵守//TRANSLIT

The iconv() stopped at the first illegar char, cutting off the string right there, which is the default behaviour of iconv(), so it did not respect the //IGNORE switch after the //TRANSLIT

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