让Discuz! X3.2 SEO标题里的“-”支持空格

public static function strreplace_strip_split($searchs, $replaces, $str) {
$searchspace = array('((\s*\-\s*)+)', '((\s*\,\s*)+)', '((\s*\|\s*)+)', '((\s*\t\s*)+)', '((\s*_\s*)+)');
$replacespace = array('-', ',', '|', ' ', '_');
return trim(preg_replace($searchspace, $replacespace, str_replace($searchs, $replaces, $str)), ' ,-|_');
}