一般而言，WordPress本身会对英语用户的体验进行优化，例如默认模板的分隔符永远都是“|”，因为英文单词以空格空开，要区分两个单词不可能用“-”，因此“|”是最好的选择。同样，为了让URL更符合浏览器解析和用户的识别，wordpress默认会将标题中的英文大写字母lower到小写。
remove_filter( 'sanitize_title', 'sanitize_title_with_dashes' );
add_filter( 'sanitize_title', 'use_capital_letter_in_slug' );
function use_capital_letter_in_slug($title) {
$title = strip_tags($title);
// Preserve escaped octets.
$title = preg_replace('|%([a-fA-F0-9][a-fA-F0-9])|', '---$1---', $title);
// Remove percent signs that are not part of an octet.
$title = str_replace('%', '', $title);
// Restore octets.
$title = preg_replace('|---([a-fA-F0-9][a-fA-F0-9])---|', '%$1', $title);</p>
<p> $title = remove_accents($title);
if (seems_utf8($title)) {
//if (function_exists('mb_strtolower')) {
// $title = mb_strtolower($title, 'UTF-8');
//}
$title = utf8_uri_encode($title, 200);
}</p>
<p> //$title = strtolower($title);
$title = preg_replace('/&.+?;/', '', $title); // kill entities
$title = str_replace('.', '-', $title);
// Keep upper-case chars too!
$title = preg_replace('/[^%a-zA-Z0-9 _-]/', '', $title);
$title = preg_replace('/\s+/', '-', $title);
$title = preg_replace('|-+|', '-', $title);
$title = trim($title, '-');</p>
<p> return $title;
}
