如何删除“？” wordpress中来自URL的问号

Question

请帮帮我。如何删除“？”在查询字符串url rhino/sub-categories/?category=Hotel中，如localhost中的'rhino / sub-categories / Hotel'。它被称为自定义数据库中的数据。所以，我想从网址中删除?。我正在尝试像as-

这样的htaccess

<IfModule mod_rewrite.c>   
RewriteEngine On   
RewriteBase /rhino/   
RewriteRule ^index\.php$ - [L]   
RewriteRule ^sub-categories/([^.]*)$ sub-categories/?category=$1 [QSA,L]   
RewriteCond %{REQUEST_FILENAME} !-f   
RewriteCond %{REQUEST_FILENAME} !-d   
RewriteRule . /rhino/index.php [L]   
</IfModule>

并尝试function.php，如： -

function listen_rewrite_action() {   
add_rewrite_tag('%category%','([^/]*)');   
add_rewrite_rule('^sub-categories/([^/]+)$','index.php?pagename=sub-categories&category=$matches[1]','top');  
add_rewrite_rule('^sub-categories/([^/]+)/page/([^/]+)$', 'index.php?pagename=sub-categories&category=$matches[1]&paged=$matches[2]','top');    
}   
add_action( 'init', 'listen_rewrite_action' );

语法等等。请帮我解决这个问题。