如何删除PHP字符串中的字符?

I'm attempting to remove accents from characters in PHP string as the first step to making the string usable in a URL.

我试图从PHP字符串中删除字符，这是使字符串在URL中可用的第一步。

I'm using the following code:

我使用以下代码:

$input = "Fóø Bår";

setlocale(LC_ALL, "en_US.utf8");
$output = iconv("utf-8", "ascii//TRANSLIT", $input);

print($output);

The output I would expect would be something like this:

我期望的输出是这样的:

F'oo Bar

However, instead of the accented characters being transliterated they are replaced with question marks:

然而，取代了重读的字符被音译，它们被替换为问号:

F?? B?r

Everything I can find online indicates that setting the locale will fix this problem, however I'm already doing this. I've already checked the following details:

我在网上找到的所有东西都表明，设置语言环境将解决这个问题，但是我已经在这么做了。我已经检查了以下的细节:

1. The locale I am setting is supported by the server (included in the list produced by locale -a)
2. 我设置的区域设置由服务器支持(包含在locale -a中生成的列表中)
3. The source and target encodings (UTF-8 and ASCII) are supported by the server's version of iconv (included in the list produced by iconv -l)
4. 源和目标编码(UTF-8和ASCII)由服务器的iconv版本支持(包括在iconv -l生成的列表中)
5. The input string is UTF-8 encoded (verified using PHP's mb_check_encoding function, as suggested in the answer by mercator)
6. 输入字符串是UTF-8编码的(根据mercator的答案，使用PHP的mb_check_encoding函数进行验证)
7. The call to setlocale is successful (it returns 'en_US.utf8' rather than FALSE)
8. 对setlocale的调用是成功的(它返回en_US)。use utf8”而不是假)

---

The cause of the problem:

The server is using the wrong implementation of iconv. It has the glibc version instead of the required libiconv version.

服务器使用iconv的错误实现。它有glibc版本，而不是需要的libiconv版本。

Note that the iconv function on some systems may not work as you expect. In such case, it'd be a good idea to install the GNU libiconv library. It will most likely end up with more consistent results.
– PHP manual's introduction to iconv

注意，某些系统上的iconv函数可能不像您预期的那样工作。在这种情况下，安装GNU libiconv库是一个好主意。结果很可能会得到更一致的结果。- PHP手册对iconv的介绍。

Details about the iconv implementation that is used by PHP are included in the output of the phpinfo function.

PHP中使用的iconv实现的详细信息包括在phpinfo函数的输出中。

(I'm not able to re-compile PHP with the correct iconv library on the server I'm working with for this project so the answer I've accepted below is the one that was most useful for removing accents without iconv support.)

(我无法在我为这个项目工作的服务器上用正确的iconv库重新编译PHP，所以下面我所接受的答案是最适合在没有iconv支持的情况下删除重音的。)

20 个解决方案

#1

I think the problem here is that your encodings consider ä and å different symbols to 'a'. In fact, the PHP documentation for strtr offers a sample for removing accents the ugly way :(

我认为这里的问题是你的编码考虑了a和a的不同符号。事实上，strtr的PHP文档提供了一种删除重音的示例:(

http://ie2.php.net/strtr

http://ie2.php.net/strtr

#2

What about WordPress implementation?

WordPress的实现呢?

function remove_accents($string) {
    if ( !preg_match('/[\x80-\xff]/', $string) )
        return $string;

    $chars = array(
    // Decompositions for Latin-1 Supplement
    chr(195).chr(128) => 'A', chr(195).chr(129) => 'A',
    chr(195).chr(130) => 'A', chr(195).chr(131) => 'A',
    chr(195).chr(132) => 'A', chr(195).chr(133) => 'A',
    chr(195).chr(135) => 'C', chr(195).chr(136) => 'E',
    chr(195).chr(137) => 'E', chr(195).chr(138) => 'E',
    chr(195).chr(139) => 'E', chr(195).chr(140) => 'I',
    chr(195).chr(141) => 'I', chr(195).chr(142) => 'I',
    chr(195).chr(143) => 'I', chr(195).chr(145) => 'N',
    chr(195).chr(146) => 'O', chr(195).chr(147) => 'O',
    chr(195).chr(148) => 'O', chr(195).chr(149) => 'O',
    chr(195).chr(150) => 'O', chr(195).chr(153) => 'U',
    chr(195).chr(154) => 'U', chr(195).chr(155) => 'U',
    chr(195).chr(156) => 'U', chr(195).chr(157) => 'Y',
    chr(195).chr(159) => 's', chr(195).chr(160) => 'a',
    chr(195).chr(161) => 'a', chr(195).chr(162) => 'a',
    chr(195).chr(163) => 'a', chr(195).chr(164) => 'a',
    chr(195).chr(165) => 'a', chr(195).chr(167) => 'c',
    chr(195).chr(168) => 'e', chr(195).chr(169) => 'e',
    chr(195).chr(170) => 'e', chr(195).chr(171) => 'e',
    chr(195).chr(172) => 'i', chr(195).chr(173) => 'i',
    chr(195).chr(174) => 'i', chr(195).chr(175) => 'i',
    chr(195).chr(177) => 'n', chr(195).chr(178) => 'o',
    chr(195).chr(179) => 'o', chr(195).chr(180) => 'o',
    chr(195).chr(181) => 'o', chr(195).chr(182) => 'o',
    chr(195).chr(182) => 'o', chr(195).chr(185) => 'u',
    chr(195).chr(186) => 'u', chr(195).chr(187) => 'u',
    chr(195).chr(188) => 'u', chr(195).chr(189) => 'y',
    chr(195).chr(191) => 'y',
    // Decompositions for Latin Extended-A
    chr(196).chr(128) => 'A', chr(196).chr(129) => 'a',
    chr(196).chr(130) => 'A', chr(196).chr(131) => 'a',
    chr(196).chr(132) => 'A', chr(196).chr(133) => 'a',
    chr(196).chr(134) => 'C', chr(196).chr(135) => 'c',
    chr(196).chr(136) => 'C', chr(196).chr(137) => 'c',
    chr(196).chr(138) => 'C', chr(196).chr(139) => 'c',
    chr(196).chr(140) => 'C', chr(196).chr(141) => 'c',
    chr(196).chr(142) => 'D', chr(196).chr(143) => 'd',
    chr(196).chr(144) => 'D', chr(196).chr(145) => 'd',
    chr(196).chr(146) => 'E', chr(196).chr(147) => 'e',
    chr(196).chr(148) => 'E', chr(196).chr(149) => 'e',
    chr(196).chr(150) => 'E', chr(196).chr(151) => 'e',
    chr(196).chr(152) => 'E', chr(196).chr(153) => 'e',
    chr(196).chr(154) => 'E', chr(196).chr(155) => 'e',
    chr(196).chr(156) => 'G', chr(196).chr(157) => 'g',
    chr(196).chr(158) => 'G', chr(196).chr(159) => 'g',
    chr(196).chr(160) => 'G', chr(196).chr(161) => 'g',
    chr(196).chr(162) => 'G', chr(196).chr(163) => 'g',
    chr(196).chr(164) => 'H', chr(196).chr(165) => 'h',
    chr(196).chr(166) => 'H', chr(196).chr(167) => 'h',
    chr(196).chr(168) => 'I', chr(196).chr(169) => 'i',
    chr(196).chr(170) => 'I', chr(196).chr(171) => 'i',
    chr(196).chr(172) => 'I', chr(196).chr(173) => 'i',
    chr(196).chr(174) => 'I', chr(196).chr(175) => 'i',
    chr(196).chr(176) => 'I', chr(196).chr(177) => 'i',
    chr(196).chr(178) => 'IJ',chr(196).chr(179) => 'ij',
    chr(196).chr(180) => 'J', chr(196).chr(181) => 'j',
    chr(196).chr(182) => 'K', chr(196).chr(183) => 'k',
    chr(196).chr(184) => 'k', chr(196).chr(185) => 'L',
    chr(196).chr(186) => 'l', chr(196).chr(187) => 'L',
    chr(196).chr(188) => 'l', chr(196).chr(189) => 'L',
    chr(196).chr(190) => 'l', chr(196).chr(191) => 'L',
    chr(197).chr(128) => 'l', chr(197).chr(129) => 'L',
    chr(197).chr(130) => 'l', chr(197).chr(131) => 'N',
    chr(197).chr(132) => 'n', chr(197).chr(133) => 'N',
    chr(197).chr(134) => 'n', chr(197).chr(135) => 'N',
    chr(197).chr(136) => 'n', chr(197).chr(137) => 'N',
    chr(197).chr(138) => 'n', chr(197).chr(139) => 'N',
    chr(197).chr(140) => 'O', chr(197).chr(141) => 'o',
    chr(197).chr(142) => 'O', chr(197).chr(143) => 'o',
    chr(197).chr(144) => 'O', chr(197).chr(145) => 'o',
    chr(197).chr(146) => 'OE',chr(197).chr(147) => 'oe',
    chr(197).chr(148) => 'R',chr(197).chr(149) => 'r',
    chr(197).chr(150) => 'R',chr(197).chr(151) => 'r',
    chr(197).chr(152) => 'R',chr(197).chr(153) => 'r',
    chr(197).chr(154) => 'S',chr(197).chr(155) => 's',
    chr(197).chr(156) => 'S',chr(197).chr(157) => 's',
    chr(197).chr(158) => 'S',chr(197).chr(159) => 's',
    chr(197).chr(160) => 'S', chr(197).chr(161) => 's',
    chr(197).chr(162) => 'T', chr(197).chr(163) => 't',
    chr(197).chr(164) => 'T', chr(197).chr(165) => 't',
    chr(197).chr(166) => 'T', chr(197).chr(167) => 't',
    chr(197).chr(168) => 'U', chr(197).chr(169) => 'u',
    chr(197).chr(170) => 'U', chr(197).chr(171) => 'u',
    chr(197).chr(172) => 'U', chr(197).chr(173) => 'u',
    chr(197).chr(174) => 'U', chr(197).chr(175) => 'u',
    chr(197).chr(176) => 'U', chr(197).chr(177) => 'u',
    chr(197).chr(178) => 'U', chr(197).chr(179) => 'u',
    chr(197).chr(180) => 'W', chr(197).chr(181) => 'w',
    chr(197).chr(182) => 'Y', chr(197).chr(183) => 'y',
    chr(197).chr(184) => 'Y', chr(197).chr(185) => 'Z',
    chr(197).chr(186) => 'z', chr(197).chr(187) => 'Z',
    chr(197).chr(188) => 'z', chr(197).chr(189) => 'Z',
    chr(197).chr(190) => 'z', chr(197).chr(191) => 's'
    );

    $string = strtr($string, $chars);

    return $string;
}

To better understand what this function does, check this corresponding conversion table here:

为了更好地理解这个函数的作用，请查看此对应的转换表:

À => A
Á => A
 => A
à => A
Ä => A
Å => A
Ç => C
È => E
É => E
Ê => E
Ë => E
Ì => I
Í => I
Î => I
Ï => I
Ñ => N
Ò => O
Ó => O
Ô => O
Õ => O
Ö => O
Ù => U
Ú => U
Û => U
Ü => U
Ý => Y
ß => s
à => a
á => a
â => a
ã => a
ä => a
å => a
ç => c
è => e
é => e
ê => e
ë => e
ì => i
í => i
î => i
ï => i
ñ => n
ò => o
ó => o
ô => o
õ => o
ö => o
ù => u
ú => u
û => u
ü => u
ý => y
ÿ => y
Ā => A
ā => a
Ă => A
ă => a
Ą => A
ą => a
Ć => C
ć => c
Ĉ => C
ĉ => c
Ċ => C
ċ => c
Č => C
č => c
Ď => D
ď => d
Đ => D
đ => d
Ē => E
ē => e
Ĕ => E
ĕ => e
Ė => E
ė => e
Ę => E
ę => e
Ě => E
ě => e
Ĝ => G
ĝ => g
Ğ => G
ğ => g
Ġ => G
ġ => g
Ģ => G
ģ => g
Ĥ => H
ĥ => h
Ħ => H
ħ => h
Ĩ => I
ĩ => i
Ī => I
ī => i
Ĭ => I
ĭ => i
Į => I
į => i
İ => I
ı => i
IJ => IJ
ij => ij
Ĵ => J
ĵ => j
Ķ => K
ķ => k
ĸ => k
Ĺ => L
ĺ => l
Ļ => L
ļ => l
Ľ => L
ľ => l
Ŀ => L
ŀ => l
Ł => L
ł => l
Ń => N
ń => n
Ņ => N
ņ => n
Ň => N
ň => n
ʼn => N
Ŋ => n
ŋ => N
Ō => O
ō => o
Ŏ => O
ŏ => o
Ő => O
ő => o
Π=> OE
œ => oe
Ŕ => R
ŕ => r
Ŗ => R
ŗ => r
Ř => R
ř => r
Ś => S
ś => s
Ŝ => S
ŝ => s
Ş => S
ş => s
Š => S
š => s
Ţ => T
ţ => t
Ť => T
ť => t
Ŧ => T
ŧ => t
Ũ => U
ũ => u
Ū => U
ū => u
Ŭ => U
ŭ => u
Ů => U
ů => u
Ű => U
ű => u
Ų => U
ų => u
Ŵ => W
ŵ => w
Ŷ => Y
ŷ => y
Ÿ => Y
Ź => Z
ź => z
Ż => Z
ż => z
Ž => Z
ž => z
ſ => s

You can generate this convesion table yourself by simply iterarting over the $chars array of the function:

您可以通过简单地迭代函数的$chars数组来生成这个对流表。

foreach($chars as $k=>$v) {
   printf("%s -> %s", $k, $v);
}

#3

This is a piece of code I found and use often:

这是我发现并经常使用的一段代码:

function stripAccents($stripAccents){
  return strtr($stripAccents,'àáâãäçèéêëìíîïñòóôõöùúûüýÿÀÁÂÃÄÇÈÉÊËÌÍÎÏÑÒÓÔÕÖÙÚÛÜÝ','aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY');
}

#4

UTF-8 friendly version of the simple function posted above by Gino:

Gino上传的简单功能的UTF-8友好版本:

function stripAccents($str) {
    return strtr(utf8_decode($str), utf8_decode('àáâãäçèéêëìíîïñòóôõöùúûüýÿÀÁÂÃÄÇÈÉÊËÌÍÎÏÑÒÓÔÕÖÙÚÛÜÝ'), 'aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY');
}

Had to come to this because my php document was UTF-8 encoded.

因为我的php文档是UTF-8编码的。

Hope it helps.

希望它可以帮助。

#5

When using iconv, the parameter locale must be set:

在使用iconv时，必须设置参数区域:

function test_enc($text = 'ěščřžýáíé ĚŠČŘŽÝÁÍÉ fóø bår FÓØ BÅR æ')
{
    echo '<tt>';
    echo iconv('utf8', 'ascii//TRANSLIT', $text);
    echo '</tt><br/>';
} 

test_enc();
setlocale(LC_ALL, 'cs_CZ.utf8');
test_enc();
setlocale(LC_ALL, 'en_US.utf8');
test_enc();

Yields into:

收益率为:

????????? ????????? f?? b?r F?? B?R ae
escrzyaie ESCRZYAIE fo? bar FO? BAR ae
escrzyaie ESCRZYAIE fo? bar FO? BAR ae

Another locales then cs_CZ and en_US I haven't installed and I can't test it.

另一个locales然后cs_CZ和en_US我没有安装，我不能测试它。

In C# I see solution using translation to unicode normalized form - accents are splitted out and then filtered via nonspacing unicode category.

在c#中，我看到使用转换到unicode标准化格式的解决方案——重音被分割出来，然后通过非间距unicode类别进行过滤。

#6

The easiest way is to use iconv() PHP native function.

最简单的方法是使用iconv() PHP本机函数。

 echo iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', "Thîs îs à vêry wrong séntènce!");

 // output: This is a very wrong sentence!

#7

Indeed is a matter of taste. There are many flavors for converting such letters.

确实是一种品位的问题。这类信件有很多种口味。

function replaceAccents($str)
{
  $a = array('À', 'Á', 'Â', 'Ã', 'Ä', 'Å', 'Æ', 'Ç', 'È', 'É', 'Ê', 'Ë', 'Ì', 'Í', 'Î', 'Ï', 'Ð', 'Ñ', 'Ò', 'Ó', 'Ô', 'Õ', 'Ö', 'Ø', 'Ù', 'Ú', 'Û', 'Ü', 'Ý', 'ß', 'à', 'á', 'â', 'ã', 'ä', 'å', 'æ', 'ç', 'è', 'é', 'ê', 'ë', 'ì', 'í', 'î', 'ï', 'ñ', 'ò', 'ó', 'ô', 'õ', 'ö', 'ø', 'ù', 'ú', 'û', 'ü', 'ý', 'ÿ', 'Ā', 'ā', 'Ă', 'ă', 'Ą', 'ą', 'Ć', 'ć', 'Ĉ', 'ĉ', 'Ċ', 'ċ', 'Č', 'č', 'Ď', 'ď', 'Đ', 'đ', 'Ē', 'ē', 'Ĕ', 'ĕ', 'Ė', 'ė', 'Ę', 'ę', 'Ě', 'ě', 'Ĝ', 'ĝ', 'Ğ', 'ğ', 'Ġ', 'ġ', 'Ģ', 'ģ', 'Ĥ', 'ĥ', 'Ħ', 'ħ', 'Ĩ', 'ĩ', 'Ī', 'ī', 'Ĭ', 'ĭ', 'Į', 'į', 'İ', 'ı', 'IJ', 'ij', 'Ĵ', 'ĵ', 'Ķ', 'ķ', 'Ĺ', 'ĺ', 'Ļ', 'ļ', 'Ľ', 'ľ', 'Ŀ', 'ŀ', 'Ł', 'ł', 'Ń', 'ń', 'Ņ', 'ņ', 'Ň', 'ň', 'ʼn', 'Ō', 'ō', 'Ŏ', 'ŏ', 'Ő', 'ő', 'Œ', 'œ', 'Ŕ', 'ŕ', 'Ŗ', 'ŗ', 'Ř', 'ř', 'Ś', 'ś', 'Ŝ', 'ŝ', 'Ş', 'ş', 'Š', 'š', 'Ţ', 'ţ', 'Ť', 'ť', 'Ŧ', 'ŧ', 'Ũ', 'ũ', 'Ū', 'ū', 'Ŭ', 'ŭ', 'Ů', 'ů', 'Ű', 'ű', 'Ų', 'ų', 'Ŵ', 'ŵ', 'Ŷ', 'ŷ', 'Ÿ', 'Ź', 'ź', 'Ż', 'ż', 'Ž', 'ž', 'ſ', 'ƒ', 'Ơ', 'ơ', 'Ư', 'ư', 'Ǎ', 'ǎ', 'Ǐ', 'ǐ', 'Ǒ', 'ǒ', 'Ǔ', 'ǔ', 'Ǖ', 'ǖ', 'Ǘ', 'ǘ', 'Ǚ', 'ǚ', 'Ǜ', 'ǜ', 'Ǻ', 'ǻ', 'Ǽ', 'ǽ', 'Ǿ', 'ǿ');
  $b = array('A', 'A', 'A', 'A', 'A', 'A', 'AE', 'C', 'E', 'E', 'E', 'E', 'I', 'I', 'I', 'I', 'D', 'N', 'O', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'Y', 's', 'a', 'a', 'a', 'a', 'a', 'a', 'ae', 'c', 'e', 'e', 'e', 'e', 'i', 'i', 'i', 'i', 'n', 'o', 'o', 'o', 'o', 'o', 'o', 'u', 'u', 'u', 'u', 'y', 'y', 'A', 'a', 'A', 'a', 'A', 'a', 'C', 'c', 'C', 'c', 'C', 'c', 'C', 'c', 'D', 'd', 'D', 'd', 'E', 'e', 'E', 'e', 'E', 'e', 'E', 'e', 'E', 'e', 'G', 'g', 'G', 'g', 'G', 'g', 'G', 'g', 'H', 'h', 'H', 'h', 'I', 'i', 'I', 'i', 'I', 'i', 'I', 'i', 'I', 'i', 'IJ', 'ij', 'J', 'j', 'K', 'k', 'L', 'l', 'L', 'l', 'L', 'l', 'L', 'l', 'l', 'l', 'N', 'n', 'N', 'n', 'N', 'n', 'n', 'O', 'o', 'O', 'o', 'O', 'o', 'OE', 'oe', 'R', 'r', 'R', 'r', 'R', 'r', 'S', 's', 'S', 's', 'S', 's', 'S', 's', 'T', 't', 'T', 't', 'T', 't', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'W', 'w', 'Y', 'y', 'Y', 'Z', 'z', 'Z', 'z', 'Z', 'z', 's', 'f', 'O', 'o', 'U', 'u', 'A', 'a', 'I', 'i', 'O', 'o', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'A', 'a', 'AE', 'ae', 'O', 'o');
  return str_replace($a, $b, $str);
}

#8

You could use urlencode. Does not quite do what you want (remove accents), but will give you a url usable string

您可以使用urlencode。不完全按照您的要求(删除重音)，但是会给您一个url可用的字符串吗?

$output = urlencode ($input);

In Perl I could use a translate regex, but I cannot think of the PHP equivalent

在Perl中，我可以使用翻译regex，但我不能想到PHP的等效项。

$input =~ tr/áâàå/aaaa/;

etc...

等等……

you could do this using preg_replace

可以使用preg_replace来完成此操作。

$patterns[0] = '/[á|â|à|å|ä]/';
$patterns[1] = '/[ð|é|ê|è|ë]/';
$patterns[2] = '/[í|î|ì|ï]/';
$patterns[3] = '/[ó|ô|ò|ø|õ|ö]/';
$patterns[4] = '/[ú|û|ù|ü]/';
$patterns[5] = '/æ/';
$patterns[6] = '/ç/';
$patterns[7] = '/ß/';
$replacements[0] = 'a';
$replacements[1] = 'e';
$replacements[2] = 'i';
$replacements[3] = 'o';
$replacements[4] = 'u';
$replacements[5] = 'ae';
$replacements[6] = 'c';
$replacements[7] = 'ss';

$output = preg_replace($patterns, $replacements, $input);

(Please note this was typed from a foggy beer ridden Friday after noon memory, so may not be 100% correct)

(请注意，这是在周五中午的记忆之后，从一个浓雾弥漫的啤酒中输入的，所以可能不是100%正确)

or you could make a hash table and do a replacement based off of that.

或者你可以做一个哈希表，然后根据它做一个替换。

#9

here is a simple function that i use usually to remove accents :

这里有一个简单的函数，我通常用它来去除口音:

function str_without_accents($str, $charset='utf-8')
{
    $str = htmlentities($str, ENT_NOQUOTES, $charset);

    $str = preg_replace('#&([A-za-z])(?:acute|cedil|caron|circ|grave|orn|ring|slash|th|tilde|uml);#', '\1', $str);
    $str = preg_replace('#&([A-za-z]{2})(?:lig);#', '\1', $str); // pour les ligatures e.g. 'œ'
    $str = preg_replace('#&[^;]+;#', '', $str); // supprime les autres caractères

    return $str;   // or add this : mb_strtoupper($str); for uppercase :)
}

#10

if you have http://php.net/manual/en/book.intl.php available, this solved your problem

如果您有http://php.net/manual/en/book.intl.php，这就解决了您的问题。

$string = "Fóø Bår";
$transliterator = Transliterator::createFromRules(':: Any-Latin; :: Latin-ASCII; :: NFD; :: [:Nonspacing Mark:] Remove; :: Lower(); :: NFC;', Transliterator::FORWARD);
echo $normalized = $transliterator->transliterate($string);

#11

I agree with georgebrock's comment.

我同意乔治·布洛克的评论。

If you find a way to get //TRANSLIT to work, you can build friendly URLs:

如果你找到了一种方法来获得//TRANSLIT工作，你可以建立友好的url:

1. use iconv with //TRANSLIT ñ => n~
   • remove non-alphanumeric non-whitespace chars inside words: $url = preg_replace( '/(\w)[^\w\s](\w)/', '$1$2', $url );
   • 移除非字母数字的非空白字符:$url = preg_replace('/(\w)](\w)/'， $1$2'， $url);
   • replace remaining separations: $url = preg_replace( '/[^a-z0-9]+/', '-', $url );
   • 替换剩余的分离:$url = preg_replace('/[a-z0-9]+/'， '-'， $url);
   • remove double/leading/traling: $url = preg_replace( '-', e.g. '/(?:(^|\-)\-+|\-$)/', '', $url );
   • 删除double/leading/traling: $url = preg_replace('-'，例如:' /(?:(^ | \)\ - + | \ $)/ ',",$ url);
2. 使用iconv / / TRANSLIT n = > n ~里面删除非字母数字的非空字符字:$ url = preg_replace(' /(\ w)(^ \ w \ s)(\ w)/ ',' $ 1 $ 2 ',$ url);取代剩余的分离:$ url = preg_replace(' /[^ a-z0-9]+ / ',' - ',$ url);删除double/leading/traling: $url = preg_replace('-'，例如:' /(?:(^ | \)\ - + | \ $)/ ',",$ url);

If you can't get it to work, replace setp 1 with strtr/character-based replacement, like Xetius' solution.

如果你不能让它工作，用strtr/基于字符的替换替换setp1，比如Xetius的解决方案。

#12

I can't reproduce your problem. I get the expected result.

我不能重现你的问题。我得到了预期的结果。

How exactly are you using mb_detect_encoding() to verify your string is in fact UTF-8?

您如何使用mb_detect_encoding()来验证您的字符串实际上是UTF-8?

If I simply call mb_detect_encoding($input) on both a UTF-8 and ISO-8859-1 encoded version of your string, both of them return "UTF-8", so that function isn't particularly reliable.

如果我在UTF-8和ISO-8859-1编码的字符串中简单地调用mb_detect_encoding($input)，它们都返回“UTF-8”，因此这个函数不是特别可靠。

iconv() gives me a PHP "notice" when it gets the wrongly encoded string and only echoes "F", but that might just be because of different PHP/iconv settings/versions (?).

iconv()给我一个PHP“通知”，当它得到错误编码的字符串时，只响应“F”，但这可能只是因为不同的PHP/iconv设置/版本(?)

I suggest to you try calling mb_check_encoding($input, "utf-8") first to verify that your string really is UTF-8. I think it probably isn't.

我建议您尝试调用mb_check_encoding($input，“utf-8”)，首先验证您的字符串是否真的是utf-8。我想可能不是。

#13

I just created a removeAccents method based on the reading of this thread and this other one too (How to remove accents and turn letters into "plain" ASCII characters?).

我刚刚创建了一个remove口音方法，它基于对这个线程的读取和另外一个(如何删除重音和将字母转换为“plain”ASCII字符)。

The method is here: https://github.com/lingtalfi/Bat/blob/master/StringTool.md#removeaccents

方法在这里:https://github.com/lingtalfi/bat/blob/master/stringtool.md# remove。

Tests are here: https://github.com/lingtalfi/Bat/blob/master/btests/StringTool/removeAccents/stringTool.removeAccents.test.php,

测试是在这里:https://github.com/lingtalfi/Bat/blob/master/btests/StringTool/removeAccents/stringTool.removeAccents.test.php

and here is what was tested so far:

到目前为止所测试的是:

$a = [
    // easy
    '',
    'a',
    'après',
    'dédé fait la fête ?',
    // hard
    'àáâãäçèéêëìíîïñòóôõöùúûüýÿÀÁÂÃÄÇÈÉÊËÌÍÎÏÑÒÓÔÕÖÙÚÛÜÝ',
    'ŻŹĆŃĄŚŁĘÓżźćńąśłęó',
    'qqqqŻŹĆŃĄŚŁĘÓżźćńąśłęóqqq',
    'ŠŽšžŸÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝàáâãäåçèéêëìíîïðñòóôõöøùúûüýÿ',       
    'ÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝàáâãäåçèéêëìíîïñòóôõöøùúûüýÿ',
    'ĀāĂ㥹ĆćĈĉĊċČčĎďĐđĒēĔĕĖėĘęĚěĜĝĞğĠġĢģĤĥĦħĨĩĪīĬĭĮįİĴĵĶķ',
    'ĹĺĻļĽľĿŀŁłŃńŅņŇňʼnŌōŎŏŐőŔŕŖŗŘřŚśŜŝŞşŠšŢţŤťŦŧŨũŪūŬŭŮůŰűŲųŴŵŶŷŸŹźŻżŽž',
    'ſƒƠơƯưǍǎǏǐǑǒǓǔǕǖǗǘǙǚǛǜǺǻǾǿ',
    'Ǽǽ',
];

and it converts only accentuated things (letters/ligatures/cédilles/some letters with a line through/...?).

它只会转换更突出的东西(字母/连接词/ cedilles /一些带有一行/……的字母)。

Here is the content of the method: (https://github.com/lingtalfi/Bat/blob/master/StringTool.php#L83)

这里是方法的内容:(https://github.com/lingtalfi/Bat/blob/master/StringTool.php#L83)

public static function removeAccents($str)
{
    static $map = [
        // single letters
        'à' => 'a',
        'á' => 'a',
        'â' => 'a',
        'ã' => 'a',
        'ä' => 'a',
        'ą' => 'a',
        'å' => 'a',
        'ā' => 'a',
        'ă' => 'a',
        'ǎ' => 'a',
        'ǻ' => 'a',
        'À' => 'A',
        'Á' => 'A',
        'Â' => 'A',
        'Ã' => 'A',
        'Ä' => 'A',
        'Ą' => 'A',
        'Å' => 'A',
        'Ā' => 'A',
        'Ă' => 'A',
        'Ǎ' => 'A',
        'Ǻ' => 'A',


        'ç' => 'c',
        'ć' => 'c',
        'ĉ' => 'c',
        'ċ' => 'c',
        'č' => 'c',
        'Ç' => 'C',
        'Ć' => 'C',
        'Ĉ' => 'C',
        'Ċ' => 'C',
        'Č' => 'C',

        'ď' => 'd',
        'đ' => 'd',
        'Ð' => 'D',
        'Ď' => 'D',
        'Đ' => 'D',


        'è' => 'e',
        'é' => 'e',
        'ê' => 'e',
        'ë' => 'e',
        'ę' => 'e',
        'ē' => 'e',
        'ĕ' => 'e',
        'ė' => 'e',
        'ě' => 'e',
        'È' => 'E',
        'É' => 'E',
        'Ê' => 'E',
        'Ë' => 'E',
        'Ę' => 'E',
        'Ē' => 'E',
        'Ĕ' => 'E',
        'Ė' => 'E',
        'Ě' => 'E',

        'ƒ' => 'f',


        'ĝ' => 'g',
        'ğ' => 'g',
        'ġ' => 'g',
        'ģ' => 'g',
        'Ĝ' => 'G',
        'Ğ' => 'G',
        'Ġ' => 'G',
        'Ģ' => 'G',


        'ĥ' => 'h',
        'ħ' => 'h',
        'Ĥ' => 'H',
        'Ħ' => 'H',

        'ì' => 'i',
        'í' => 'i',
        'î' => 'i',
        'ï' => 'i',
        'ĩ' => 'i',
        'ī' => 'i',
        'ĭ' => 'i',
        'į' => 'i',
        'ſ' => 'i',
        'ǐ' => 'i',
        'Ì' => 'I',
        'Í' => 'I',
        'Î' => 'I',
        'Ï' => 'I',
        'Ĩ' => 'I',
        'Ī' => 'I',
        'Ĭ' => 'I',
        'Į' => 'I',
        'İ' => 'I',
        'Ǐ' => 'I',

        'ĵ' => 'j',
        'Ĵ' => 'J',

        'ķ' => 'k',
        'Ķ' => 'K',


        'ł' => 'l',
        'ĺ' => 'l',
        'ļ' => 'l',
        'ľ' => 'l',
        'ŀ' => 'l',
        'Ł' => 'L',
        'Ĺ' => 'L',
        'Ļ' => 'L',
        'Ľ' => 'L',
        'Ŀ' => 'L',


        'ñ' => 'n',
        'ń' => 'n',
        'ņ' => 'n',
        'ň' => 'n',
        'ʼn' => 'n',
        'Ñ' => 'N',
        'Ń' => 'N',
        'Ņ' => 'N',
        'Ň' => 'N',

        'ò' => 'o',
        'ó' => 'o',
        'ô' => 'o',
        'õ' => 'o',
        'ö' => 'o',
        'ð' => 'o',
        'ø' => 'o',
        'ō' => 'o',
        'ŏ' => 'o',
        'ő' => 'o',
        'ơ' => 'o',
        'ǒ' => 'o',
        'ǿ' => 'o',
        'Ò' => 'O',
        'Ó' => 'O',
        'Ô' => 'O',
        'Õ' => 'O',
        'Ö' => 'O',
        'Ø' => 'O',
        'Ō' => 'O',
        'Ŏ' => 'O',
        'Ő' => 'O',
        'Ơ' => 'O',
        'Ǒ' => 'O',
        'Ǿ' => 'O',


        'ŕ' => 'r',
        'ŗ' => 'r',
        'ř' => 'r',
        'Ŕ' => 'R',
        'Ŗ' => 'R',
        'Ř' => 'R',


        'ś' => 's',
        'š' => 's',
        'ŝ' => 's',
        'ş' => 's',
        'Ś' => 'S',
        'Š' => 'S',
        'Ŝ' => 'S',
        'Ş' => 'S',

        'ţ' => 't',
        'ť' => 't',
        'ŧ' => 't',
        'Ţ' => 'T',
        'Ť' => 'T',
        'Ŧ' => 'T',


        'ù' => 'u',
        'ú' => 'u',
        'û' => 'u',
        'ü' => 'u',
        'ũ' => 'u',
        'ū' => 'u',
        'ŭ' => 'u',
        'ů' => 'u',
        'ű' => 'u',
        'ų' => 'u',
        'ư' => 'u',
        'ǔ' => 'u',
        'ǖ' => 'u',
        'ǘ' => 'u',
        'ǚ' => 'u',
        'ǜ' => 'u',
        'Ù' => 'U',
        'Ú' => 'U',
        'Û' => 'U',
        'Ü' => 'U',
        'Ũ' => 'U',
        'Ū' => 'U',
        'Ŭ' => 'U',
        'Ů' => 'U',
        'Ű' => 'U',
        'Ų' => 'U',
        'Ư' => 'U',
        'Ǔ' => 'U',
        'Ǖ' => 'U',
        'Ǘ' => 'U',
        'Ǚ' => 'U',
        'Ǜ' => 'U',


        'ŵ' => 'w',
        'Ŵ' => 'W',

        'ý' => 'y',
        'ÿ' => 'y',
        'ŷ' => 'y',
        'Ý' => 'Y',
        'Ÿ' => 'Y',
        'Ŷ' => 'Y',

        'ż' => 'z',
        'ź' => 'z',
        'ž' => 'z',
        'Ż' => 'Z',
        'Ź' => 'Z',
        'Ž' => 'Z',


        // accentuated ligatures
        'Ǽ' => 'A',
        'ǽ' => 'a',
    ];
    return strtr($str, $map);
}

#14

Merged Cazuma Nii Cavalcanti's implementation with Junior Mayhé's char list, hoping to save some time for some of you.

合并后的Cazuma Nii Cavalcanti的实现与Junior Mayhe的char列表，希望能节省一些时间给你们中的一些人。

function stripAccents($str) {
    return strtr(utf8_decode($str), utf8_decode('ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝßàáâãäåæçèéêëìíîïñòóôõöøùúûüýÿĀāĂ㥹ĆćĈĉĊċČčĎďĐđĒēĔĕĖėĘęĚěĜĝĞğĠġĢģĤĥĦħĨĩĪīĬĭĮįİıIJijĴĵĶķĹĺĻļĽľĿŀŁłŃńŅņŇňʼnŌōŎŏŐőŒœŔŕŖŗŘřŚśŜŝŞşŠšŢţŤťŦŧŨũŪūŬŭŮůŰűŲųŴŵŶŷŸŹźŻżŽžſƒƠơƯưǍǎǏǐǑǒǓǔǕǖǗǘǙǚǛǜǺǻǼǽǾǿ'), 'AAAAAAAECEEEEIIIIDNOOOOOOUUUUYsaaaaaaaeceeeeiiiinoooooouuuuyyAaAaAaCcCcCcCcDdDdEeEeEeEeEeGgGgGgGgHhHhIiIiIiIiIiIJijJjKkLlLlLlLlllNnNnNnnOoOoOoOEoeRrRrRrSsSsSsSsTtTtTtUuUuUuUuUuUuWwYyYZzZzZzsfOoUuAaIiOoUuUuUuUuUuAaAEaeOo');
}

#15

You can use an array key => value style to use with strtr() safely for UTF-8 characters even if they are multi-bytes.

您可以使用数组键=>值样式使用strtr()来安全地使用UTF-8字符，即使它们是多字节的。

function no_accent($str){
    $accents = array('À' => 'A', 'Á' => 'A', 'Â' => 'A', 'Ã' => 'A', 'Ä' => 'A', 'Å' => 'A', 'à' => 'a', 'á' => 'a', 'â' => 'a', 'ã' => 'a', 'ä' => 'a', 'å' => 'a', 'Ā' => 'A', 'ā' => 'a', 'Ă' => 'A', 'ă' => 'a', 'Ą' => 'A', 'ą' => 'a', 'Ç' => 'C', 'ç' => 'c', 'Ć' => 'C', 'ć' => 'c', 'Ĉ' => 'C', 'ĉ' => 'c', 'Ċ' => 'C', 'ċ' => 'c', 'Č' => 'C', 'č' => 'c', 'Ð' => 'D', 'ð' => 'd', 'Ď' => 'D', 'ď' => 'd', 'Đ' => 'D', 'đ' => 'd', 'È' => 'E', 'É' => 'E', 'Ê' => 'E', 'Ë' => 'E', 'è' => 'e', 'é' => 'e', 'ê' => 'e', 'ë' => 'e', 'Ē' => 'E', 'ē' => 'e', 'Ĕ' => 'E', 'ĕ' => 'e', 'Ė' => 'E', 'ė' => 'e', 'Ę' => 'E', 'ę' => 'e', 'Ě' => 'E', 'ě' => 'e', 'Ĝ' => 'G', 'ĝ' => 'g', 'Ğ' => 'G', 'ğ' => 'g', 'Ġ' => 'G', 'ġ' => 'g', 'Ģ' => 'G', 'ģ' => 'g', 'Ĥ' => 'H', 'ĥ' => 'h', 'Ħ' => 'H', 'ħ' => 'h', 'Ì' => 'I', 'Í' => 'I', 'Î' => 'I', 'Ï' => 'I', 'ì' => 'i', 'í' => 'i', 'î' => 'i', 'ï' => 'i', 'Ĩ' => 'I', 'ĩ' => 'i', 'Ī' => 'I', 'ī' => 'i', 'Ĭ' => 'I', 'ĭ' => 'i', 'Į' => 'I', 'į' => 'i', 'İ' => 'I', 'ı' => 'i', 'Ĵ' => 'J', 'ĵ' => 'j', 'Ķ' => 'K', 'ķ' => 'k', 'ĸ' => 'k', 'Ĺ' => 'L', 'ĺ' => 'l', 'Ļ' => 'L', 'ļ' => 'l', 'Ľ' => 'L', 'ľ' => 'l', 'Ŀ' => 'L', 'ŀ' => 'l', 'Ł' => 'L', 'ł' => 'l', 'Ñ' => 'N', 'ñ' => 'n', 'Ń' => 'N', 'ń' => 'n', 'Ņ' => 'N', 'ņ' => 'n', 'Ň' => 'N', 'ň' => 'n', 'ʼn' => 'n', 'Ŋ' => 'N', 'ŋ' => 'n', 'Ò' => 'O', 'Ó' => 'O', 'Ô' => 'O', 'Õ' => 'O', 'Ö' => 'O', 'Ø' => 'O', 'ò' => 'o', 'ó' => 'o', 'ô' => 'o', 'õ' => 'o', 'ö' => 'o', 'ø' => 'o', 'Ō' => 'O', 'ō' => 'o', 'Ŏ' => 'O', 'ŏ' => 'o', 'Ő' => 'O', 'ő' => 'o', 'Ŕ' => 'R', 'ŕ' => 'r', 'Ŗ' => 'R', 'ŗ' => 'r', 'Ř' => 'R', 'ř' => 'r', 'Ś' => 'S', 'ś' => 's', 'Ŝ' => 'S', 'ŝ' => 's', 'Ş' => 'S', 'ş' => 's', 'Š' => 'S', 'š' => 's', 'ſ' => 's', 'Ţ' => 'T', 'ţ' => 't', 'Ť' => 'T', 'ť' => 't', 'Ŧ' => 'T', 'ŧ' => 't', 'Ù' => 'U', 'Ú' => 'U', 'Û' => 'U', 'Ü' => 'U', 'ù' => 'u', 'ú' => 'u', 'û' => 'u', 'ü' => 'u', 'Ũ' => 'U', 'ũ' => 'u', 'Ū' => 'U', 'ū' => 'u', 'Ŭ' => 'U', 'ŭ' => 'u', 'Ů' => 'U', 'ů' => 'u', 'Ű' => 'U', 'ű' => 'u', 'Ų' => 'U', 'ų' => 'u', 'Ŵ' => 'W', 'ŵ' => 'w', 'Ý' => 'Y', 'ý' => 'y', 'ÿ' => 'y', 'Ŷ' => 'Y', 'ŷ' => 'y', 'Ÿ' => 'Y', 'Ź' => 'Z', 'ź' => 'z', 'Ż' => 'Z', 'ż' => 'z', 'Ž' => 'Z', 'ž' => 'z');
    return strtr($str, $accents);
}

Plus, you save decode/encode in UTF-8 part.

另外，你可以在UTF-8部分保存解码/编码。

#16

$unwanted_array = array(    '&' => 'and', '&' => 'and', '@' => 'at', '©' => 'c', '®' => 'r', 
'̊'=>'','̧'=>'','̨'=>'','̄'=>'','̱'=>'',
'Á'=>'a','á'=>'a','À'=>'a','à'=>'a','Ă'=>'a','ă'=>'a','ắ'=>'a','Ắ'=>'A','Ằ'=>'A',
'ằ'=>'a','ẵ'=>'a','Ẵ'=>'A','ẳ'=>'a','Ẳ'=>'A','Â'=>'a','â'=>'a','ấ'=>'a','Ấ'=>'A',
'ầ'=>'a','Ầ'=>'a','ẩ'=>'a','Ẩ'=>'A','Ǎ'=>'a','ǎ'=>'a','Å'=>'a','å'=>'a','Ǻ'=>'a',
'ǻ'=>'a','Ä'=>'a','ä'=>'a','ã'=>'a','Ã'=>'A','Ą'=>'a','ą'=>'a','Ā'=>'a','ā'=>'a',
'ả'=>'a','Ả'=>'a','Ạ'=>'A','ạ'=>'a','ặ'=>'a','Ặ'=>'A','ậ'=>'a','Ậ'=>'A','Æ'=>'ae',
'æ'=>'ae','Ǽ'=>'ae','ǽ'=>'ae','ẫ'=>'a','Ẫ'=>'A',
'Ć'=>'c','ć'=>'c','Ĉ'=>'c','ĉ'=>'c','Č'=>'c','č'=>'c','Ċ'=>'c','ċ'=>'c','Ç'=>'c','ç'=>'c',
'Ď'=>'d','ď'=>'d','Ḑ'=>'D','ḑ'=>'d','Đ'=>'d','đ'=>'d','Ḍ'=>'D','ḍ'=>'d','Ḏ'=>'D','ḏ'=>'d','ð'=>'d','Ð'=>'D',
'É'=>'e','é'=>'e','È'=>'e','è'=>'e','Ĕ'=>'e','ĕ'=>'e','ê'=>'e','ế'=>'e','Ế'=>'E','ề'=>'e',
'Ề'=>'E','Ě'=>'e','ě'=>'e','Ë'=>'e','ë'=>'e','Ė'=>'e','ė'=>'e','Ę'=>'e','ę'=>'e','Ē'=>'e',
'ē'=>'e','ệ'=>'e','Ệ'=>'E','Ə'=>'e','ə'=>'e','ẽ'=>'e','Ẽ'=>'E','ễ'=>'e',
'Ễ'=>'E','ể'=>'e','Ể'=>'E','ẻ'=>'e','Ẻ'=>'E','ẹ'=>'e','Ẹ'=>'E',
'ƒ'=>'f',
'Ğ'=>'g','ğ'=>'g','Ĝ'=>'g','ĝ'=>'g','Ǧ'=>'G','ǧ'=>'g','Ġ'=>'g','ġ'=>'g','Ģ'=>'g','ģ'=>'g',
'H̲'=>'H','h̲'=>'h','Ĥ'=>'h','ĥ'=>'h','Ȟ'=>'H','ȟ'=>'h','Ḩ'=>'H','ḩ'=>'h','Ħ'=>'h','ħ'=>'h','Ḥ'=>'H','ḥ'=>'h',
'Ỉ'=>'I','Í'=>'i','í'=>'i','Ì'=>'i','ì'=>'i','Ĭ'=>'i','ĭ'=>'i','Î'=>'i','î'=>'i','Ǐ'=>'i','ǐ'=>'i',
'Ï'=>'i','ï'=>'i','Ḯ'=>'I','ḯ'=>'i','Ĩ'=>'i','ĩ'=>'i','İ'=>'i','Į'=>'i','į'=>'i','Ī'=>'i','ī'=>'i',
'ỉ'=>'I','Ị'=>'I','ị'=>'i','IJ'=>'ij','ij'=>'ij','ı'=>'i',
'Ĵ'=>'j','ĵ'=>'j',
'Ķ'=>'k','ķ'=>'k','Ḵ'=>'K','ḵ'=>'k',
'Ĺ'=>'l','ĺ'=>'l','Ľ'=>'l','ľ'=>'l','Ļ'=>'l','ļ'=>'l','Ł'=>'l','ł'=>'l','Ŀ'=>'l','ŀ'=>'l',
'Ń'=>'n','ń'=>'n','Ň'=>'n','ň'=>'n','Ñ'=>'N','ñ'=>'n','Ņ'=>'n','ņ'=>'n','Ṇ'=>'N','ṇ'=>'n','Ŋ'=>'n','ŋ'=>'n',
'Ó'=>'o','ó'=>'o','Ò'=>'o','ò'=>'o','Ŏ'=>'o','ŏ'=>'o','Ô'=>'o','ô'=>'o','ố'=>'o','Ố'=>'O','ồ'=>'o',
'Ồ'=>'O','ổ'=>'o','Ổ'=>'O','Ǒ'=>'o','ǒ'=>'o','Ö'=>'o','ö'=>'o','Ő'=>'o','ő'=>'o','Õ'=>'o','õ'=>'o',
'Ø'=>'o','ø'=>'o','Ǿ'=>'o','ǿ'=>'o','Ǫ'=>'O','ǫ'=>'o','Ǭ'=>'O','ǭ'=>'o','Ō'=>'o','ō'=>'o','ỏ'=>'o',
'Ỏ'=>'O','Ơ'=>'o','ơ'=>'o','ớ'=>'o','Ớ'=>'O','ờ'=>'o','Ờ'=>'O','ở'=>'o','Ở'=>'O','ợ'=>'o','Ợ'=>'O',
'ọ'=>'o','Ọ'=>'O','ọ'=>'o','Ọ'=>'O','ộ'=>'o','Ộ'=>'O','ỗ'=>'o','Ỗ'=>'O','ỡ'=>'o','Ỡ'=>'O',
'Œ'=>'oe','œ'=>'oe',
'ĸ'=>'k',
'Ŕ'=>'r','ŕ'=>'r','Ř'=>'r','ř'=>'r','ṙ'=>'r','Ŗ'=>'r','ŗ'=>'r','Ṛ'=>'R','ṛ'=>'r','Ṟ'=>'R','ṟ'=>'r',
'S̲'=>'S','s̲'=>'s','Ś'=>'s','ś'=>'s','Ŝ'=>'s','ŝ'=>'s','Š'=>'s','š'=>'s','Ş'=>'s','ş'=>'s',
'Ṣ'=>'S','ṣ'=>'s','Ș'=>'S','ș'=>'s',
'ſ'=>'z','ß'=>'ss','Ť'=>'t','ť'=>'t','Ţ'=>'t','ţ'=>'t','Ṭ'=>'T','ṭ'=>'t','Ț'=>'T',
'ț'=>'t','Ṯ'=>'T','ṯ'=>'t','™'=>'tm','Ŧ'=>'t','ŧ'=>'t',
'Ú'=>'u','ú'=>'u','Ù'=>'u','ù'=>'u','Ŭ'=>'u','ŭ'=>'u','Û'=>'u','û'=>'u','Ǔ'=>'u','ǔ'=>'u','Ů'=>'u','ů'=>'u',
'Ü'=>'u','ü'=>'u','Ǘ'=>'u','ǘ'=>'u','Ǜ'=>'u','ǜ'=>'u','Ǚ'=>'u','ǚ'=>'u','Ǖ'=>'u','ǖ'=>'u','Ű'=>'u','ű'=>'u',
'Ũ'=>'u','ũ'=>'u','Ų'=>'u','ų'=>'u','Ū'=>'u','ū'=>'u','Ư'=>'u','ư'=>'u','ứ'=>'u','Ứ'=>'U','ừ'=>'u','Ừ'=>'U',
'ử'=>'u','Ử'=>'U','ự'=>'u','Ự'=>'U','ụ'=>'u','Ụ'=>'U','ủ'=>'u','Ủ'=>'U','ữ'=>'u','Ữ'=>'U',
'Ŵ'=>'w','ŵ'=>'w',
'Ý'=>'y','ý'=>'y','ỳ'=>'y','Ỳ'=>'Y','Ŷ'=>'y','ŷ'=>'y','ÿ'=>'y','Ÿ'=>'y','ỹ'=>'y','Ỹ'=>'Y','ỷ'=>'y','Ỷ'=>'Y',
'Z̲'=>'Z','z̲'=>'z','Ź'=>'z','ź'=>'z','Ž'=>'z','ž'=>'z','Ż'=>'z','ż'=>'z','Ẕ'=>'Z','ẕ'=>'z',
'þ'=>'p','ʼn'=>'n','А'=>'a','а'=>'a','Б'=>'b','б'=>'b','В'=>'v','в'=>'v','Г'=>'g','г'=>'g','Ґ'=>'g','ґ'=>'g',
'Д'=>'d','д'=>'d','Е'=>'e','е'=>'e','Ё'=>'jo','ё'=>'jo','Є'=>'e','є'=>'e','Ж'=>'zh','ж'=>'zh','З'=>'z','з'=>'z',
'И'=>'i','и'=>'i','І'=>'i','і'=>'i','Ї'=>'i','ї'=>'i','Й'=>'j','й'=>'j','К'=>'k','к'=>'k','Л'=>'l','л'=>'l',
'М'=>'m','м'=>'m','Н'=>'n','н'=>'n','О'=>'o','о'=>'o','П'=>'p','п'=>'p','Р'=>'r','р'=>'r','С'=>'s','с'=>'s',
'Т'=>'t','т'=>'t','У'=>'u','у'=>'u','Ф'=>'f','ф'=>'f','Х'=>'h','х'=>'h','Ц'=>'c','ц'=>'c','Ч'=>'ch','ч'=>'ch',
'Ш'=>'sh','ш'=>'sh','Щ'=>'sch','щ'=>'sch','Ъ'=>'-',
'ъ'=>'-','Ы'=>'y','ы'=>'y','Ь'=>'-','ь'=>'-',
'Э'=>'je','э'=>'je','Ю'=>'ju','ю'=>'ju','Я'=>'ja','я'=>'ja','א'=>'a','ב'=>'b','ג'=>'g','ד'=>'d','ה'=>'h','ו'=>'v',
'ז'=>'z','ח'=>'h','ט'=>'t','י'=>'i','ך'=>'k','כ'=>'k','ל'=>'l','ם'=>'m','מ'=>'m','ן'=>'n','נ'=>'n','ס'=>'s','ע'=>'e',
'ף'=>'p','פ'=>'p','ץ'=>'C','צ'=>'c','ק'=>'q','ר'=>'r','ש'=>'w','ת'=>'t'
);

$accentsRemoved = strtr( $stringToRemoveAccents , $unwanted_array );

#17

An improved version of remove_accents() function according to last version Wordpress 4.3 formatting is:

改进版的remove_口音()函数根据上一个版本的Wordpress 4.3格式设置为:

function mbstring_binary_safe_encoding( $reset = false ) {
    static $encodings = array();
    static $overloaded = null;

    if ( is_null( $overloaded ) )
        $overloaded = function_exists( 'mb_internal_encoding' ) && ( ini_get( 'mbstring.func_overload' ) & 2 );

    if ( false === $overloaded )
        return;

    if ( ! $reset ) {
        $encoding = mb_internal_encoding();
        array_push( $encodings, $encoding );
        mb_internal_encoding( 'ISO-8859-1' );
    }

    if ( $reset && $encodings ) {
        $encoding = array_pop( $encodings );
        mb_internal_encoding( $encoding );
    }
}

function reset_mbstring_encoding() {
    mbstring_binary_safe_encoding( true );
}

function seems_utf8( $str ) {
    mbstring_binary_safe_encoding();
    $length = strlen($str);
    reset_mbstring_encoding();
    for ($i=0; $i < $length; $i++) {
        $c = ord($str[$i]);
        if ($c < 0x80) $n = 0; // 0bbbbbbb
        elseif (($c & 0xE0) == 0xC0) $n=1; // 110bbbbb
        elseif (($c & 0xF0) == 0xE0) $n=2; // 1110bbbb
        elseif (($c & 0xF8) == 0xF0) $n=3; // 11110bbb
        elseif (($c & 0xFC) == 0xF8) $n=4; // 111110bb
        elseif (($c & 0xFE) == 0xFC) $n=5; // 1111110b
        else return false; // Does not match any model
        for ($j=0; $j<$n; $j++) { // n bytes matching 10bbbbbb follow ?
            if ((++$i == $length) || ((ord($str[$i]) & 0xC0) != 0x80))
                return false;
        }
    }
    return true;
}

function remove_accents( $string ) {
    if ( !preg_match('/[\x80-\xff]/', $string) )
        return $string;

    if (seems_utf8($string)) {
        $chars = array(
            // Decompositions for Latin-1 Supplement
            chr(194).chr(170) => 'a', chr(194).chr(186) => 'o',
            chr(195).chr(128) => 'A', chr(195).chr(129) => 'A',
            chr(195).chr(130) => 'A', chr(195).chr(131) => 'A',
            chr(195).chr(132) => 'A', chr(195).chr(133) => 'A',
            chr(195).chr(134) => 'AE',chr(195).chr(135) => 'C',
            chr(195).chr(136) => 'E', chr(195).chr(137) => 'E',
            chr(195).chr(138) => 'E', chr(195).chr(139) => 'E',
            chr(195).chr(140) => 'I', chr(195).chr(141) => 'I',
            chr(195).chr(142) => 'I', chr(195).chr(143) => 'I',
            chr(195).chr(144) => 'D', chr(195).chr(145) => 'N',
            chr(195).chr(146) => 'O', chr(195).chr(147) => 'O',
            chr(195).chr(148) => 'O', chr(195).chr(149) => 'O',
            chr(195).chr(150) => 'O', chr(195).chr(153) => 'U',
            chr(195).chr(154) => 'U', chr(195).chr(155) => 'U',
            chr(195).chr(156) => 'U', chr(195).chr(157) => 'Y',
            chr(195).chr(158) => 'TH',chr(195).chr(159) => 's',
            chr(195).chr(160) => 'a', chr(195).chr(161) => 'a',
            chr(195).chr(162) => 'a', chr(195).chr(163) => 'a',
            chr(195).chr(164) => 'a', chr(195).chr(165) => 'a',
            chr(195).chr(166) => 'ae',chr(195).chr(167) => 'c',
            chr(195).chr(168) => 'e', chr(195).chr(169) => 'e',
            chr(195).chr(170) => 'e', chr(195).chr(171) => 'e',
            chr(195).chr(172) => 'i', chr(195).chr(173) => 'i',
            chr(195).chr(174) => 'i', chr(195).chr(175) => 'i',
            chr(195).chr(176) => 'd', chr(195).chr(177) => 'n',
            chr(195).chr(178) => 'o', chr(195).chr(179) => 'o',
            chr(195).chr(180) => 'o', chr(195).chr(181) => 'o',
            chr(195).chr(182) => 'o', chr(195).chr(184) => 'o',
            chr(195).chr(185) => 'u', chr(195).chr(186) => 'u',
            chr(195).chr(187) => 'u', chr(195).chr(188) => 'u',
            chr(195).chr(189) => 'y', chr(195).chr(190) => 'th',
            chr(195).chr(191) => 'y', chr(195).chr(152) => 'O',
            // Decompositions for Latin Extended-A
            chr(196).chr(128) => 'A', chr(196).chr(129) => 'a',
            chr(196).chr(130) => 'A', chr(196).chr(131) => 'a',
            chr(196).chr(132) => 'A', chr(196).chr(133) => 'a',
            chr(196).chr(134) => 'C', chr(196).chr(135) => 'c',
            chr(196).chr(136) => 'C', chr(196).chr(137) => 'c',
            chr(196).chr(138) => 'C', chr(196).chr(139) => 'c',
            chr(196).chr(140) => 'C', chr(196).chr(141) => 'c',
            chr(196).chr(142) => 'D', chr(196).chr(143) => 'd',
            chr(196).chr(144) => 'D', chr(196).chr(145) => 'd',
            chr(196).chr(146) => 'E', chr(196).chr(147) => 'e',
            chr(196).chr(148) => 'E', chr(196).chr(149) => 'e',
            chr(196).chr(150) => 'E', chr(196).chr(151) => 'e',
            chr(196).chr(152) => 'E', chr(196).chr(153) => 'e',
            chr(196).chr(154) => 'E', chr(196).chr(155) => 'e',
            chr(196).chr(156) => 'G', chr(196).chr(157) => 'g',
            chr(196).chr(158) => 'G', chr(196).chr(159) => 'g',
            chr(196).chr(160) => 'G', chr(196).chr(161) => 'g',
            chr(196).chr(162) => 'G', chr(196).chr(163) => 'g',
            chr(196).chr(164) => 'H', chr(196).chr(165) => 'h',
            chr(196).chr(166) => 'H', chr(196).chr(167) => 'h',
            chr(196).chr(168) => 'I', chr(196).chr(169) => 'i',
            chr(196).chr(170) => 'I', chr(196).chr(171) => 'i',
            chr(196).chr(172) => 'I', chr(196).chr(173) => 'i',
            chr(196).chr(174) => 'I', chr(196).chr(175) => 'i',
            chr(196).chr(176) => 'I', chr(196).chr(177) => 'i',
            chr(196).chr(178) => 'IJ',chr(196).chr(179) => 'ij',
            chr(196).chr(180) => 'J', chr(196).chr(181) => 'j',
            chr(196).chr(182) => 'K', chr(196).chr(183) => 'k',
            chr(196).chr(184) => 'k', chr(196).chr(185) => 'L',
            chr(196).chr(186) => 'l', chr(196).chr(187) => 'L',
            chr(196).chr(188) => 'l', chr(196).chr(189) => 'L',
            chr(196).chr(190) => 'l', chr(196).chr(191) => 'L',
            chr(197).chr(128) => 'l', chr(197).chr(129) => 'L',
            chr(197).chr(130) => 'l', chr(197).chr(131) => 'N',
            chr(197).chr(132) => 'n', chr(197).chr(133) => 'N',
            chr(197).chr(134) => 'n', chr(197).chr(135) => 'N',
            chr(197).chr(136) => 'n', chr(197).chr(137) => 'N',
            chr(197).chr(138) => 'n', chr(197).chr(139) => 'N',
            chr(197).chr(140) => 'O', chr(197).chr(141) => 'o',
            chr(197).chr(142) => 'O', chr(197).chr(143) => 'o',
            chr(197).chr(144) => 'O', chr(197).chr(145) => 'o',
            chr(197).chr(146) => 'OE',chr(197).chr(147) => 'oe',
            chr(197).chr(148) => 'R',chr(197).chr(149) => 'r',
            chr(197).chr(150) => 'R',chr(197).chr(151) => 'r',
            chr(197).chr(152) => 'R',chr(197).chr(153) => 'r',
            chr(197).chr(154) => 'S',chr(197).chr(155) => 's',
            chr(197).chr(156) => 'S',chr(197).chr(157) => 's',
            chr(197).chr(158) => 'S',chr(197).chr(159) => 's',
            chr(197).chr(160) => 'S', chr(197).chr(161) => 's',
            chr(197).chr(162) => 'T', chr(197).chr(163) => 't',
            chr(197).chr(164) => 'T', chr(197).chr(165) => 't',
            chr(197).chr(166) => 'T', chr(197).chr(167) => 't',
            chr(197).chr(168) => 'U', chr(197).chr(169) => 'u',
            chr(197).chr(170) => 'U', chr(197).chr(171) => 'u',
            chr(197).chr(172) => 'U', chr(197).chr(173) => 'u',
            chr(197).chr(174) => 'U', chr(197).chr(175) => 'u',
            chr(197).chr(176) => 'U', chr(197).chr(177) => 'u',
            chr(197).chr(178) => 'U', chr(197).chr(179) => 'u',
            chr(197).chr(180) => 'W', chr(197).chr(181) => 'w',
            chr(197).chr(182) => 'Y', chr(197).chr(183) => 'y',
            chr(197).chr(184) => 'Y', chr(197).chr(185) => 'Z',
            chr(197).chr(186) => 'z', chr(197).chr(187) => 'Z',
            chr(197).chr(188) => 'z', chr(197).chr(189) => 'Z',
            chr(197).chr(190) => 'z', chr(197).chr(191) => 's',
            // Decompositions for Latin Extended-B
            chr(200).chr(152) => 'S', chr(200).chr(153) => 's',
            chr(200).chr(154) => 'T', chr(200).chr(155) => 't',
            // Euro Sign
            chr(226).chr(130).chr(172) => 'E',
            // GBP (Pound) Sign
            chr(194).chr(163) => '',
            // Vowels with diacritic (Vietnamese)
            // unmarked
            chr(198).chr(160) => 'O', chr(198).chr(161) => 'o',
            chr(198).chr(175) => 'U', chr(198).chr(176) => 'u',
            // grave accent
            chr(225).chr(186).chr(166) => 'A', chr(225).chr(186).chr(167) => 'a',
            chr(225).chr(186).chr(176) => 'A', chr(225).chr(186).chr(177) => 'a',
            chr(225).chr(187).chr(128) => 'E', chr(225).chr(187).chr(129) => 'e',
            chr(225).chr(187).chr(146) => 'O', chr(225).chr(187).chr(147) => 'o',
            chr(225).chr(187).chr(156) => 'O', chr(225).chr(187).chr(157) => 'o',
            chr(225).chr(187).chr(170) => 'U', chr(225).chr(187).chr(171) => 'u',
            chr(225).chr(187).chr(178) => 'Y', chr(225).chr(187).chr(179) => 'y',
            // hook
            chr(225).chr(186).chr(162) => 'A', chr(225).chr(186).chr(163) => 'a',
            chr(225).chr(186).chr(168) => 'A', chr(225).chr(186).chr(169) => 'a',
            chr(225).chr(186).chr(178) => 'A', chr(225).chr(186).chr(179) => 'a',
            chr(225).chr(186).chr(186) => 'E', chr(225).chr(186).chr(187) => 'e',
            chr(225).chr(187).chr(130) => 'E', chr(225).chr(187).chr(131) => 'e',
            chr(225).chr(187).chr(136) => 'I', chr(225).chr(187).chr(137) => 'i',
            chr(225).chr(187).chr(142) => 'O', chr(225).chr(187).chr(143) => 'o',
            chr(225).chr(187).chr(148) => 'O', chr(225).chr(187).chr(149) => 'o',
            chr(225).chr(187).chr(158) => 'O', chr(225).chr(187).chr(159) => 'o',
            chr(225).chr(187).chr(166) => 'U', chr(225).chr(187).chr(167) => 'u',
            chr(225).chr(187).chr(172) => 'U', chr(225).chr(187).chr(173) => 'u',
            chr(225).chr(187).chr(182) => 'Y', chr(225).chr(187).chr(183) => 'y',
            // tilde
            chr(225).chr(186).chr(170) => 'A', chr(225).chr(186).chr(171) => 'a',
            chr(225).chr(186).chr(180) => 'A', chr(225).chr(186).chr(181) => 'a',
            chr(225).chr(186).chr(188) => 'E', chr(225).chr(186).chr(189) => 'e',
            chr(225).chr(187).chr(132) => 'E', chr(225).chr(187).chr(133) => 'e',
            chr(225).chr(187).chr(150) => 'O', chr(225).chr(187).chr(151) => 'o',
            chr(225).chr(187).chr(160) => 'O', chr(225).chr(187).chr(161) => 'o',
            chr(225).chr(187).chr(174) => 'U', chr(225).chr(187).chr(175) => 'u',
            chr(225).chr(187).chr(184) => 'Y', chr(225).chr(187).chr(185) => 'y',
            // acute accent
            chr(225).chr(186).chr(164) => 'A', chr(225).chr(186).chr(165) => 'a',
            chr(225).chr(186).chr(174) => 'A', chr(225).chr(186).chr(175) => 'a',
            chr(225).chr(186).chr(190) => 'E', chr(225).chr(186).chr(191) => 'e',
            chr(225).chr(187).chr(144) => 'O', chr(225).chr(187).chr(145) => 'o',
            chr(225).chr(187).chr(154) => 'O', chr(225).chr(187).chr(155) => 'o',
            chr(225).chr(187).chr(168) => 'U', chr(225).chr(187).chr(169) => 'u',
            // dot below
            chr(225).chr(186).chr(160) => 'A', chr(225).chr(186).chr(161) => 'a',
            chr(225).chr(186).chr(172) => 'A', chr(225).chr(186).chr(173) => 'a',
            chr(225).chr(186).chr(182) => 'A', chr(225).chr(186).chr(183) => 'a',
            chr(225).chr(186).chr(184) => 'E', chr(225).chr(186).chr(185) => 'e',
            chr(225).chr(187).chr(134) => 'E', chr(225).chr(187).chr(135) => 'e',
            chr(225).chr(187).chr(138) => 'I', chr(225).chr(187).chr(139) => 'i',
            chr(225).chr(187).chr(140) => 'O', chr(225).chr(187).chr(141) => 'o',
            chr(225).chr(187).chr(152) => 'O', chr(225).chr(187).chr(153) => 'o',
            chr(225).chr(187).chr(162) => 'O', chr(225).chr(187).chr(163) => 'o',
            chr(225).chr(187).chr(164) => 'U', chr(225).chr(187).chr(165) => 'u',
            chr(225).chr(187).chr(176) => 'U', chr(225).chr(187).chr(177) => 'u',
            chr(225).chr(187).chr(180) => 'Y', chr(225).chr(187).chr(181) => 'y',
            // Vowels with diacritic (Chinese, Hanyu Pinyin)
            chr(201).chr(145) => 'a',
            // macron
            chr(199).chr(149) => 'U', chr(199).chr(150) => 'u',
            // acute accent
            chr(199).chr(151) => 'U', chr(199).chr(152) => 'u',
            // caron
            chr(199).chr(141) => 'A', chr(199).chr(142) => 'a',
            chr(199).chr(143) => 'I', chr(199).chr(144) => 'i',
            chr(199).chr(145) => 'O', chr(199).chr(146) => 'o',
            chr(199).chr(147) => 'U', chr(199).chr(148) => 'u',
            chr(199).chr(153) => 'U', chr(199).chr(154) => 'u',
            // grave accent
            chr(199).chr(155) => 'U', chr(199).chr(156) => 'u',
        );

        $string = strtr($string, $chars);
    } else {
        $chars = array();
        // Assume ISO-8859-1 if not UTF-8
        $chars['in'] = chr(128).chr(131).chr(138).chr(142).chr(154).chr(158)
            .chr(159).chr(162).chr(165).chr(181).chr(192).chr(193).chr(194)
            .chr(195).chr(196).chr(197).chr(199).chr(200).chr(201).chr(202)
            .chr(203).chr(204).chr(205).chr(206).chr(207).chr(209).chr(210)
            .chr(211).chr(212).chr(213).chr(214).chr(216).chr(217).chr(218)
            .chr(219).chr(220).chr(221).chr(224).chr(225).chr(226).chr(227)
            .chr(228).chr(229).chr(231).chr(232).chr(233).chr(234).chr(235)
            .chr(236).chr(237).chr(238).chr(239).chr(241).chr(242).chr(243)
            .chr(244).chr(245).chr(246).chr(248).chr(249).chr(250).chr(251)
            .chr(252).chr(253).chr(255);

        $chars['out'] = "EfSZszYcYuAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy";

        $string = strtr($string, $chars['in'], $chars['out']);
        $double_chars = array();
        $double_chars['in'] = array(chr(140), chr(156), chr(198), chr(208), chr(222), chr(223), chr(230), chr(240), chr(254));
        $double_chars['out'] = array('OE', 'oe', 'AE', 'DH', 'TH', 'ss', 'ae', 'dh', 'th');
        $string = str_replace($double_chars['in'], $double_chars['out'], $string);
    }

    return $string;
}

My answer is an update of @dynamic solution since Romanian or perhaps other language diacritics weren't converted. I wrote the minimum functions and works like a charm.

我的答案是，自罗马尼亚语或其他语言的发音符号不被转换后，@dynamic解决方案的更新。我写了最基本的功能，像符咒一样工作。

print_r(remove_accents('Iași, Iași County, Romania'));

#18

<?php
/* 
 * Thanks:
 *   - The idea of extracting accents equiv chars with the help of the HTMLSpecialChars convertion was taking from ICanBoogie Package of 'Olivier Laviale' {@link http://www.weirdog.com/blog/php/supprimer-les-accents-des-caracteres-accentues.html}
*/
function accentCharsModifier($str){
    if(($length=mb_strlen($str,"UTF-8"))<strlen($str)){
        $i=$count=0;
        while($i<$length){
            if(strlen($c=mb_substr($str,$i,1,"UTF-8"))>1){
                $he=htmlentities($c); 
                if(($nC=preg_replace("#&([A-Za-z])(?:acute|cedil|caron|circ|grave|orn|ring|slash|th|tilde|uml);#", "\\1", $he))!=$he ||
                    ($nC=preg_replace("#&([A-Za-z]{2})(?:lig);#", "\\1", $he))!=$he ||
                    ($nC=preg_replace("#&[^;]+;#", "", $he))!=$he){
                    $str=str_replace($c,$nC,$str,$count);if($nC==""){$length=$length-$count;$i--;}
                }
            }
            $i++;
        }
    }
    return $str;
}
echo accentCharsModifier("&éôpkAÈû");
?>

#19

One of the tricks I stumbled upon on the web was using htmlentities then stripping the encoded character :

我在网上偶然发现的一个诀窍是使用htmlentities，然后去掉编码的字符:

$stripped = preg_replace('`&[^;]+;`','',htmlentities($string));

Not perfect but it does work well in some case.

虽然不完美，但在某些情况下确实有效。

But, you're writing about creating an URL string, so urlencode and its counterpart urldecode may be better. Or, if you are creating a query string, use this last function : http_build_query.

但是，你写的是创建一个URL字符串，所以urlencode和它对应的urldecode可能更好。或者，如果您正在创建一个查询字符串，请使用最后一个函数:http_build_query。

#20

WordPress' implementation is definitly the safest for UTF8 strings. For Latin1 strings, a simple strtr does the job, but ensure you're saving your script in LATIN1 format, not UTF-8.

WordPress的实现是最安全的UTF8字符串。对于Latin1字符串，一个简单的strtr可以完成这个任务，但是要确保您将脚本保存为Latin1格式，而不是UTF-8。