修改(简化)主题标题以便在url中显示

Question

我正在用PHP创建一个小留言板,我需要"简化"主题标题,以便在主题的网址中显示它.

例子:

Ceci est un sujet d'exemple 变 ceci-est-un-sujet-d-exemple

J'ai été à la plage 变 j-ai-ete-a-la-plage

I dislike sp&cial character$成为i-dislike-spcial-character(如果有更好的翻译,我会接受)

编辑1:所有字符串必须是UTF-8编码

编辑2:我最近了解到这种操作的结果被称为"slug"或"友好网址"

Answer 1

这就是我所做的.我想我已经涵盖了大多数"常见"角色.显然,它会丢失一些.

/**
 * Replaces special characters in a string with their "non-special" counterpart.
 *
 * Useful for friendly URLs.
 *
 * @param string
 * @return string
 */
function convertAccentsAndSpecialToNormal($string) {
    $table = array(
        'À'=>'A', 'Á'=>'A', 'Â'=>'A', 'Ã'=>'A', 'Ä'=>'A', 'Å'=>'A', '?'=>'A', '?'=>'A', '?'=>'A', 'Æ'=>'A', '?'=>'A',
        'à'=>'a', 'á'=>'a', 'â'=>'a', 'ã'=>'a', 'ä'=>'a', 'å'=>'a', '?'=>'a', '?'=>'a', '?'=>'a', 'æ'=>'a', '?'=>'a',

        'Þ'=>'B', 'þ'=>'b', 'ß'=>'Ss',

        'Ç'=>'C', '?'=>'C', '?'=>'C', '?'=>'C', '?'=>'C',
        'ç'=>'c', '?'=>'c', '?'=>'c', '?'=>'c', '?'=>'c',

        '?'=>'Dj', '?'=>'D', '?'=>'D',
        '?'=>'dj', '?'=>'d',

        'È'=>'E', 'É'=>'E', 'Ê'=>'E', 'Ë'=>'E', '?'=>'E', '?'=>'E', '?'=>'E', '?'=>'E',
        'è'=>'e', 'é'=>'e', 'ê'=>'e', 'ë'=>'e', '?'=>'e', '?'=>'e', '?'=>'e', '?'=>'e',

        '?'=>'G', '?'=>'G', '?'=>'G', '?'=>'G',
        '?'=>'g', '?'=>'g', '?'=>'g', '?'=>'g',

        '?'=>'H', '?'=>'H',
        '?'=>'h', '?'=>'h',

        'Ì'=>'I', 'Í'=>'I', 'Î'=>'I', 'Ï'=>'I', '?'=>'I', '?'=>'I', '?'=>'I', '?'=>'I', '?'=>'I',
        'ì'=>'i', 'í'=>'i', 'î'=>'i', 'ï'=>'i', '?'=>'i', '?'=>'i', '?'=>'i', '?'=>'i', '?'=>'i',

        '?'=>'J',
        '?'=>'j',

        '?'=>'K',
        '?'=>'k', '?'=>'k',

        '?'=>'L', '?'=>'L', '?'=>'L', '?'=>'L', '?'=>'L',
        '?'=>'l', '?'=>'l', '?'=>'l', '?'=>'l', '?'=>'l',

        'Ñ'=>'N', '?'=>'N', '?'=>'N', '?'=>'N', '?'=>'N',
        'ñ'=>'n', '?'=>'n', '?'=>'n', '?'=>'n', '?'=>'n', '?'=>'n',

        'Ò'=>'O', 'Ó'=>'O', 'Ô'=>'O', 'Õ'=>'O', 'Ö'=>'O', 'Ø'=>'O', '?'=>'O', '?'=>'O', '?'=>'O', 'Œ'=>'O',
        'ò'=>'o', 'ó'=>'o', 'ô'=>'o', 'õ'=>'o', 'ö'=>'o', 'ø'=>'o', '?'=>'o', '?'=>'o', '?'=>'o', 'œ'=>'o', 'ð'=>'o',

        '?'=>'R', '?'=>'R',
        '?'=>'r', '?'=>'r', '?'=>'r',

        'Š'=>'S', '?'=>'S', '?'=>'S', '?'=>'S',
        'š'=>'s', '?'=>'s', '?'=>'s', '?'=>'s',

        '?'=>'T', '?'=>'T', '?'=>'T',
        '?'=>'t', '?'=>'t', '?'=>'t',

        'Ù'=>'U', 'Ú'=>'U', 'Û'=>'U', 'Ü'=>'U', '?'=>'U', '?'=>'U', '?'=>'U', '?'=>'U', '?'=>'U', '?'=>'U',
        'ù'=>'u', 'ú'=>'u', 'û'=>'u', 'ü'=>'u', '?'=>'u', '?'=>'u', '?'=>'u', '?'=>'u', '?'=>'u', '?'=>'u',

        '?'=>'W', '?'=>'W', '?'=>'W', '?'=>'W',
        '?'=>'w', '?'=>'w', '?'=>'w', '?'=>'w',

        'Ý'=>'Y', 'Ÿ'=>'Y', '?'=>'Y',
        'ý'=>'y', 'ÿ'=>'y', '?'=>'y',

        'Ž'=>'Z', '?'=>'Z', '?'=>'Z', 'Ž'=>'Z',
        'ž'=>'z', '?'=>'z', '?'=>'z', 'ž'=>'z',

        '“'=>'"', '”'=>'"', '‘'=>"'", '’'=>"'", '•'=>'-', '…'=>'...', '—'=>'-', '–'=>'-', '¿'=>'?', '¡'=>'!', '°'=>' degrees ',
        '¼'=>' 1/4 ', '½'=>' 1/2 ', '¾'=>' 3/4 ', '?'=>' 1/3 ', '?'=>' 2/3 ', '?'=>' 1/8 ', '?'=>' 3/8 ', '?'=>' 5/8 ', '?'=>' 7/8 ',
        '÷'=>' divided by ', '×'=>' times ', '±'=>' plus-minus ', '?'=>' square root ', '?'=>' infinity ',
        '?'=>' almost equal to ', '?'=>' not equal to ', '?'=>' identical to ', '?'=>' less than or equal to ', '?'=>' greater than or equal to ',
        '?'=>' left ', '?'=>' right ', '?'=>' up ', '?'=>' down ', '?'=>' left and right ', '?'=>' up and down ',
        '?'=>' care of ', '?' => ' estimated ',
        '?'=>' ohm ',
        '?'=>' female ', '?'=>' male ',
        '©'=>' Copyright ', '®'=>' Registered ', '™' =>' Trademark ',
    );

    $string = strtr($string, $table);
    // Currency symbols: £¤¥€  - we dont bother with them for now
    $string = preg_replace("/[^\x9\xA\xD\x20-\x7F]/u", "", $string);

    return $string;
}

/**
 * Create URL Title
 *
 * Takes a "title" string as input and creates a human-friendly URL string.
 *
 * @param  string
 * @param  boolean
 * @return string
 */
if (!function_exists('friendlyUrl')) {
    function friendlyUrl($string, $lowercase = TRUE) {
        $separator = '-';

        if (function_exists('convertAccentsAndSpecialToNormal')) {
            $string = convertAccentsAndSpecialToNormal($string);
        }

        $trans = array(
            '/&\#\d+?;/i' => '',
            '/&\S+?;/i' => '',
            '/\.+/i' => '',
            '/\s+/' => $separator,
            '/\/+/' => $separator,
            '/[^a-z0-9\-\._]/i' => '',
            '/'. $separator .'+/' => $separator,
            '/'. $separator .'$/' => $separator,
            '/^'. $separator .'/' => $separator,
            '/\.+$/' => ''
        );

        $string = strip_tags($string);
        $string = preg_replace(array_keys($trans), array_values($trans), $string);

        if ($lowercase === TRUE) {
            $string = strtolower($string);
        }

        return trim(stripslashes($string));
    }
}