wordpress在postname中支持大写字母的方法

代码如下:

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;
}