private static function get_tag_name_pinyin($tag)
{
$cache_group_id = 'tag-name-pinyin';
$cache = wp_cache_get($tag['term_id'], $cache_group_id);
if ($cache) {
return $cache;
}
/** 提取首字母 */
$first_letter_pattern = '/^[a-z]/i';
$first_letter = strtolower(mb_substr($tag['name'], 0, 1));
preg_match($first_letter_pattern, $first_letter, $matches);
/**
* 存在字母开头的标签
*/
if (!empty($matches[0])) {
wp_cache_set($tag['term_id'], $first_letter, $cache_group_id);
return $first_letter;
}
/**
* 标签是中文开头
*/
$utf8_tagname = mb_convert_encoding($tag['name'], 'utf-8', 'ascii,gb2312,gbk,utf-8');
preg_match("/^[\\x{4e00}-\\x{9fa5}]/u", $utf8_tagname, $matches);
/**
* 不是中文，跳到下一个
*/
if (empty($matches[0])) {
wp_cache_set($tag['term_id'], false, $cache_group_id);
return $first_letter;
}
if (!class_exists('Overtrue\\Pinyin\\Pinyin')) {
include __DIR__ . '/inc/Pinyin/Pinyin.php';
}
$double_pinyins = ['zh', 'ch', 'sh', 'ou', 'ai', 'ang', 'an'];
$tag_pinyin = Overtrue\Pinyin\Pinyin::pinyin($tag['name']);
$tag_two_pinyin = strtolower(substr($tag_pinyin, 0, 2));
/**
* 判断巧舌音
*/
if (in_array($tag_two_pinyin, $double_pinyins)) {
wp_cache_set($tag['term_id'], $tag_two_pinyin, $cache_group_id);
return $tag_two_pinyin;
/**
* 单音
*/
} else {
$tag_one_pinyin = mb_substr($tag_pinyin, 0, 1);
wp_cache_set($tag['term_id'], $tag_one_pinyin, $cache_group_id);
return $tag_one_pinyin;
}
}
